43 Gastroenterologists, Hepatologists, Doctors, and Scientists recognised in Stanford University 2026 list of world's top 2% scientists
New Delhi: In 2026, a total of 43 gastroenterologists, hepatologists, doctors, and scientists from India's various prestigious health and medical institutes have been recognised among the world's top 2% of scientists in the prestigious database curated by Professor John P.A. Ioannidis of Stanford University, in collaboration with the Elsevier Data Repository.
Being recognised in Stanford University's top 2% list of scientists acknowledges their pioneering research, clinical achievements, and consistent impact on the field.
(1) Dr. Shiv Kumar Sarin- Institute of Liver and Biliary Sciences:
Prof. (Dr.) Shiv Kumar Sarin is a renowned Indian hepatologist, gastroenterologist, and public health advocate who serves as the Senior Professor, Head of the Hepatology Department, and Director of the Institute of Liver and Biliary Sciences (ILBS). He is also the President of the National Academy of Medical Sciences.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 4594 in the list based on the composite score excluding self-citations, and 3637 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 31, with altogether 6301 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
In his academic career spanning for nearly 30 years, he has immensely contributed internationally to the field of Liver diseases. His approach for Primary Prevention of variceal bleeding by band ligation, has become the standard of care worldwide. Similarly, the management protocols on Gastric Varices; and the nomenclature bearing his name as ‘Sarin’s Classification of Gastric Varices” are universally followed. He has more than 350 International publications to his credit, including The New England Journal of Medicine, The Lancet, Annals of Internal Medicine, Gastroenterology and Hepatology. His deep interest in physiology has recently resulted in the development of a unique model of endotoxemia induced portal hypertension and liver disease. He has helped describe two new disease entities, portal biliopathy, and ‘Acute-on-Chronic Liver Failure”.He has edited eleven books on liver diseases, many of which are standard reference books and contributed more than 69 chapters in various medical text books. Dr. Sarin is the founding Chief Editor of a prestigious Journal, Hepatology International (Springer International). He has served editorial assignments in most prestigious journals in the specialized fields.
He has helped develop 17 major treatment guidelines, including spearheading five major Asian Pacific Treatment Guidelines in Liver diseases; which are widely quoted and practiced.
He has immensely contributed to the field of hepatitis B, C and liver cancer. He is instrumental in changing the nomenclature of ‘Hepatitis B carrier’ to “Chronic HBV Infection”. The treatment options and pathogenesis of these diseases have been greatly advanced by his work. He is deeply involved in preventing and protecting new born babies from HBV transmission. His group showed that the mother baby transmission is the major route of transmission of hepatitis B in India. He also showed for the first time that the newborns born to these mothers are already chronically infected with HBV. The treatment of hepatitis B and C, alcoholic liver disease and liver cancer are specially looked after by him.
(2) Dr Rakesh A. Aggarwal- Jawaharlal Institute of Postgraduate Medical Education and Research
A former professor of Gastroenterology at SGPGI Lucknow, Dr. Rakesh A. Aggarwal also served as the Director of JIPMER. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 15382 in the list based on the composite score excluding self-citations, and 15413 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 24, with altogether 5372 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(3) Dr Harshad C. Devarbhavi- St. John's National Academy Of Health Sciences India
Dr Harshad C Devarbhavi is a gastroenterologist and hepatologist in Bangalore with 39 years of experience. He practices at St John's Medical College Hospital, Koramangala.
He has been recognised as as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 20553 in the list based on the composite score excluding self-citations, and 21118 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 2076 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(4) Dr Uday Chand Ghoshal- Apollo Multispeciality Hospitals Kolkata
Dr Uday Chand Ghoshal is a distinguished Gastroenterologist based at Apollo Multispeciality Hospitals. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 21050 in the list based on the composite score excluding self-citations, and 21892 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 16, with altogether 1599 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Microbiology.
(5) Dr Govind Kumar Makharia- All India Institute of Medical Sciences, New Delhi
Dr Govind Kumar Makharia is a Professor at All India Institute of Medical Sciences, New Delhi. He pursued his DM in Gastroenterology from PGIMER.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 52281 in the list based on the composite score excluding self-citations, and 49246 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 16, with altogether 1514 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Microbiology.
(6) Dr Ajay Kumar Duseja- Postgraduate Institute of Medical Education and Research, Chandigarh
Professor of Hepatology at PGIMER, Chandigarh, Dr. Ajay Kumar Duseja obtained his MBBS and MD degree from HP University, Shimla. Later, he pursued DM Gastroenterology from PGIMER Chandigarh.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 52648 in the list based on the composite score excluding self-citations, and 40386 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 17, with altogether 1655 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Nuclear Medicine and Medical Imaging.
(7) Dr Pramod Kumar Garg- All India Institute of Medical Sciences, New Delhi
Dr Pramod Kumar Garg is a Professor of Gastroenterology and Associate Dean (Research) at All India Institute of Medical Sciences, New Delhi.
He has been recognised as as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 63751 in the list based on the composite score excluding self-citations, and 59281 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 1445 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Surgery.
(8) Dr Radha Krishan Dhiman- Postgraduate Institute of Medical Education and Research, Chandigarh
Dr Radha Krishan Dhiman is a Professor of Hepatology at Postgraduate Institute of Medical Education and Research, Chandigarh. He pursued his MBBS and MD from KGMU and DM from SGPGI Lucknow.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 70456 in the list based on the composite score excluding self-citations, and 68832 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 14, with altogether 1102 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Nuclear Medicine and Medical Imaging.
(9) Dr Cyriac Abby Abby Philips- Institute of Liver and Biliary Sciences
Dr Cyriac Abby Abby Philips is an Indian hepatologist who works at the Institute of Liver and Biliary Sciences. He pursued his MD in Internal Medicine from Nil Ratan Sircar (NRS) Medical College, Kolkata, and DM in Hepatology & Liver Transplant Medicine from the Institute of Liver and Biliary Sciences (ILBS), New Delhi.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 77117 in the list based on the composite score excluding self-citations, and 73760 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 644 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(10) Dr Mohammad Sultan Khuroo- Sher-I-Kashmir Institute of Medical Sciences
A renowned Gastroenterologist, Dr. Mohammad Sultan Khuroo from Sher-I-Kashmir Institute of Medical Sciences has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 82271 in the list based on the composite score excluding self-citations, and 81074 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 8, with altogether 243 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(11) Dr Balakrishnan S. Ramakrishna- SRM Institutes for MedicaI Science
Dr Balakrishnan S. Ramakrishna is the Head of Gastroenterology at SRM Institutes for Medical Sciences. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 86538 in the list based on the composite score excluding self-citations, and 98222 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 11, with altogether 470 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Microbiology.
(12) Dr Rakhi Maiwall- Institute of Liver and Biliary Sciences
Dr Rakhi Maiwall is working as Professor of Hepatology at the Institute of Liver and Biliary Sciences. She has 136 publications and has a special interest in critical care hepatology, AKI in liver disease, liver regeneration, and artificial liver support therapies. She is in charge of the liver intensive care unit at ILBS and is also the Vice-Secretary of the International Club of Ascites. She serves as the associate editor of Hepatology International and also a member of the editorial board of Liver Transplantation Journal. She has won several awards, including the prestigious “APASL Rising Star Award” for her active contribution in clinical research.
She has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. She holds a rank of 86827 in the list based on the composite score excluding self-citations, and 68185 when all citations are included. By the end of 2025, her h-index, excluding self-citations, stands at 15, with altogether 1188 citations for 2025 (excluding self-citations).
Her main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Pathology.
(13) Dr Surinder S. Rana- Postgraduate Institute of Medical Education and Research, Chandigarh
A professor of Gastroenterology at PGIMER, Chandigarh, Dr. Rana has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He ranks 88509 on the list based on the composite score excluding self-citations, and 79710 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 8 with altogether 443 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Surgery.
(14) Dr. Praveen Kumar Sharma- Sir Ganga Ram Hospital
Dr. Praveen Kumar Sharma is a Gastroenterologist at Sir Ganga Ram Hospital. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He ranks 90864 on the list based on the composite score excluding self-citations, and 84875 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 9, with altogether 435 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(15) Dr Rupjyoti Talukdar- Asian Institute of Gastroenterology, India
Rupjyoti Talukdar is the Director of Pancreatology at Asian Institute of Gastroenterology, Hyderabad. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 94182 in the list based on the composite score excluding self-citations, and 90412 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 859 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(16) Dr Anil C. Anand- Indraprastha Apollo Hospitals
Dr. Anil C. Anand is a gastroenterologist and hepatologist associated with Indraprastha Apollo Hospitals in Sarita Vihar, Delhi. He completed MBBS from the University of Lucknow in 1975, MD - General Medicine from the University of Pune in 1980 and DM - Gastroenterology from All India Institute of Medical Sciences, New Delhi, in 1988.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 98743 in the list based on the composite score excluding self-citations, and 83293 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 10, with altogether 556 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(17) Dr Ashish Kumar- Sir Ganga Ram Hospital
Dr. Ashish Kumar is a Professor and Senior Consultant of Gastroenterology and Hepatology at the Institute of Liver, Gastroenterology & Pancreatico-Biliary Sciences, Sir Ganga Ram Hospital, New Delhi. He completed his Gastroenterology training (DM) at the Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, in 2004, and subsequently trained for five years under the renowned Dr. Shiv Kumar Sarin at G. B. Pant Hospital and the Institute of Liver & Biliary Sciences (ILBS), New Delhi.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 117807 in the list based on the composite score excluding self-citations, and 109562 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 665 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Pathology.
(18) Dr Vineet Ahuja- All India Institute of Medical Sciences, New Delhi
Dr Vineet Ahuja is a Professor of Gastroenterology at AIIMS, New Delhi. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 118509 in the list based on the composite score excluding self-citations, and 122645 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 16, with altogether 1667 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Microbiology.
(19) Dr Anand V. Kulkarni- Asian Institute of Gastroenterology, India
Dr. Anand V. Kulkarni is the senior consultant and director of critical care hepatology at the Asian Institute of Gastroenterology, Hyderabad, India. He has multiple national and international awards recognizing his contributions from AASLD, APASL, and ISG. He has more than 150 PubMed-indexed publications to his credit. His main areas of research focus include alcohol-associated hepatitis, ACLF, HCC and LDLT.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 136832 in the list based on the composite score excluding self-citations, and 109589 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 14, with altogether 1178 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(20) Dr Shalimar- All India Institute of Medical Sciences, New Delhi
Dr. Shalimar is an Associate Professor in the Department of Gastroenterology and Human Nutrition (HNU) at the All India Institute of Medical Sciences (AIIMS), New Delhi.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 138623 in the list based on the composite score excluding self-citations, and 116240 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 15, with altogether 1104 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Nuclear Medicine and Medical Imaging.
(21) Dr Vishal Sharma- Postgraduate Institute of Medical Education and Research, Chandigarh
Dr Vishal Sharma is an Additional Professor at the Postgraduate Institute of Medical Education and Research, Chandigarh. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 147200 in the list based on the composite score excluding self-citations, and 129863 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 11, with altogether 748 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(22) Dr Sundeep Lakhtakia - Asian Institute of Gastroenterology India
Dr Sundeep Lakhtakia is a consultant Gastroenterologist and Endosonologist at Asian Institute of Gastroenterology, India. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 149140 in the list based on the composite score excluding self-citations, and 138177 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 13, with altogether 921 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Urology and Nephrology.
(23) Dr Ajit K. Sood- Dayanand Medical College & Hospital
Professor Ajit Sood is an eminent gastroenterologist and academic, currently serving as Professor and Head of the Department of Gastroenterology at Dayanand Medical College & Hospital, Ludhiana. With over 40 years of medical experience, he is nationally and internationally recognized for his pioneering work in inflammatory bowel disease (IBD), celiac disease, and hepatitis C.
He was the first to establish the epidemiology of ulcerative colitis in India and has led groundbreaking genetic and microbiome studies, including India's first GWAS on IBD. His work has been published in leading journals like Gut, Nature Genetics, and the Journal of Crohn’s and Colitis. He has also been a key figure in introducing fecal microbiota transplantation (FMT) for ulcerative colitis in India.
Professor Sood is the founder of the Colitis and Crohn’s Foundation (India) and the Digestive Diseases Care Foundation, both of which focus on education, patient care, and public health outreach. He has received numerous honors, including the Dr. B. C. Roy National Award and several national orations. He has over 13,000 citations and an h-index of 45.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 155768 in the list based on the composite score excluding self-citations, and 139396 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 15, with altogether 1113 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(24) Dr Pankaj Kumar Gupta- Postgraduate Institute of Medical Education and Research, Chandigarh
Dr Pankaj Kumar Gupta is a faculty in the Radiodiagnosis and Imaging Department at PGIMER, Chandigarh. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 159357 in the list based on the composite score excluding self-citations, and 119490 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 741 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Nuclear Medicine and Medical Imaging.
(25) Dr. Ujjal Poddar- Sanjay Gandhi Postgraduate Institute of Medical Sciences
Dr. Ujjal Poddar is working as the Professor and Head of the Paediatric Gastroenterology Department at SGPGI, Lucknow. Dr Poddar has graduated from North Bengal Medical College, West Bengal and received his post-graduate (MD) degree as well as doctorate in Gastroenterology (DM) from Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 160501 in the list based on the composite score excluding self-citations, and 147405 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 6, with altogether 318 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Pediatrics.
(26) Dr. Amit Goel- Sanjay Gandhi Postgraduate Institute of Medical Sciences
Dr Amit Goel is working as Professor and head of department of Hepatology, Sanjay Gandhi Post Graduate Institute of Medical Sciences (SGPGIMS). Dr. Goel did his initial medical graduation from Moti lal Nehru Medical College, Allahabad and post-graduation from the prestigious King George's Medical College, now University (KGMU) Lucknow, followed by post-doctoral Gastroenterology training from SGPGIMS, Lucknow.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 166402 in the list based on the composite score excluding self-citations, and 166052 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 16, with altogether 5019 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(27) Dr Madhumita Premkumar- Postgraduate Institute of Medical Education and Research, Chandigarh
A consultant hepatologist at PGIMER, Chandigarh, Dr. Madhumita Premkumar has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. She ranks 170140 on the list based on the composite score excluding self-citations, and 161450 when all citations are included. By the end of 2025, her h-index, excluding self-citations, stands at 11, with altogether 712 citations for 2025 (excluding self-citations).
Her main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(28) Dr Saurabh Kedia- All India Institute of Medical Sciences, New Delhi
Dr Saurabh Kedia is an Assistant Professor at the All India Institute of Medical Sciences, New Delhi. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He ranks 172343 on the list based on the composite score excluding self-citations, and 193281 when all citations are included. By the end of 2025, his h-index (excluding self-citations) is 14, with 763 total citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Microbiology.
(29) Dr Anshu Srivastava- Sanjay Gandhi Postgraduate Institute of Medical Sciences
Dr Anshu Srivastava is a Professor in the Department of Pediatric Gastroenterology at Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 183873 in the list based on the composite score excluding self-citations, and 168519 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 8, with altogether 523 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Pediatrics.
(30) Dr Debendranath Nath Guha Mazumder- DNGM Research Foundation
Dr Debendranath Nath Guha Mazumder from DNGM Research Foundation. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 185611 in the list based on the composite score excluding self-citations, and 212057 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 7, with altogether 171 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Environmental Sciences.
(31) Dr Subrat Kumar Acharya- Kalinga Institute of Medical Sciences
Pro-Chancellor and Professor in Gastroenterology at Kalinga Institute of Medical Sciences, Dr Subrat Kumar Acharya, has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He ranks 186555 on the list based on the composite score excluding self-citations, and 177383 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 10, with altogether 486 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(32) Dr Avinash N. Supe- Seth GS Medical College and KEM Hospital
Dr Avinash N. Supe is an Emertitus Professor at Seth GS Medical College and KEM Hospital. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 188562 in the list based on the composite score excluding self-citations, and 217684 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 10, with altogether 592 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(33) Dr Usha K. Dutta- Postgraduate Institute of Medical Education and Research, Chandigarh
Prof Usha K. Dutta is the Professor and Head of the Gastroenterology Department at PGIMER, Chandigarh. She has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. She ranks 203488 on the list based on the composite score excluding self-citations, and 179910 when all citations are included. By the end of 2025, her h-index, excluding self-citations, stands at 13, with altogether 1636 citations for 2025 (excluding self-citations).
Her main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Nuclear Medicine and Medical Imaging.
(34) Dr Duvvuru Nageshwar Reddy- AIG Hospitals
Dr Duvvuru Nageshwar Reddy is an Indian gastroenterologist and endoscopist. He is the founder and chairman of the Asian Institute of Gastroenterology and the first Indian doctor to receive all three Padma Awards. He is a fellow of the National Academy of Medical Sciences[4] and has served as the Chairman of the World Endoscopy Organization Research Committee.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 88381 in the list based on the composite score excluding self-citations, and 186931 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 16, with altogether 1260 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Surgery.
(35) Dr Zaheer Nabi- Asian Institute of Gastroenterology, India
Dr Zaheer Nabi is a Gastroenterologist at the Asian Institute of Gastroenterology. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 209897 in the list based on the composite score excluding self-citations, and 197735 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 9, with altogether 382 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Surgery.
(36) Dr Rakesh K. Kochhar- Postgraduate Institute of Medical Education and Research, Chandigarh
Dr Rakesh K. Kochhar is a Professor at Postgraduate Institute of Medical Education and Research, Chandigarh. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 217504 in the list based on the composite score excluding self-citations, and 204585 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 11, with altogether 789 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Nuclear Medicine and Medical Imaging.
(37) Dr Deepak Narayan Amarapurkar- Bombay Hospital and Medical Research Centre
Dr Deepak Narayan Amarapurkar is an Indian physician and consultant. He is a Fellow American College Gastroenterology, member Indian Society Gastroenterology, Indian Association Study of Liver, Society Gastrointestinal Endoscopy India, Association Physicians India, International Gastro-Surgical Club.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 225624 in the list based on the composite score excluding self-citations, and 230806 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 3230 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(38) Dr Yogesh Kumar Chawla- Postgraduate Institute of Medical Education and Research, Chandigarh
Dr Yogesh Kumar Chawla is an Indian medical doctor and hepatologist and has served as the director of the Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 230763 in the list based on the composite score excluding self-citations, and 232711 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 15, with altogether 1188 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(39) Dr Archana Rastogi- Institute of Liver and Biliary Sciences
Dr Archana Rastogi is an Additional Professor in Pathology at Institute of Liver and Biliary Sciences. She has done MD, DNB and Post-Doctoral Certified Course in Pathology, and has been trained in prestigious superspeciality institutes in India. She is actively involved in research and diagnostic histopathology & cytopathology work in hepato-pancreato-biliary diseases and Gastro-Intestinal Pathology for last 15 years and has successfully run the training (PDCC Hepatopathology) program for the last six years. Renal Pathology including transplant Pathology, is a special interest area, & have done PDCC (Renal Pathology), ANIO-CNC Clinical Nephropathology 1 year certified Course in 2016 & have experience of 4 years at SGPGI, Lucknow in the field.
She has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. She holds a rank of 237093 in the list based on the composite score excluding self-citations, and 245335 when all citations are included. By the end of 2025, her h-index (excluding self-citations) is 8, with 499 total citations for 2025 (excluding self-citations).
Her main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Pathology.
(40) Dr Arvinder Singh Soin- Medanta - The Medicity:
Dr Arvinder Singh Soin [ FRCS (Gen Surg) , FRCS (Glas) , FRCS (Edin) , Primary FRCS , MS (THESIS) , MBBS] is the Chairman of Medanta - The Medicity.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 246289 in the list based on the composite score excluding self-citations, and 223315 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 11, with altogether 565 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Surgery.
(41) Dr Akash P. Shukla- Sir H. N. Reliance Foundation Hospital and Research Centre:
Dr. Akash Shukla is the Director of the Department of Hepatology, Sir H. N. Reliance Foundation Hospital and Research Centre. He is a world-renowned expert and a pioneer in the field of vascular liver diseases. He is known for his excellent work in various aspects of liver diseases, especially ascites, non-alcoholic fatty liver disease (NAFLD), alcoholic liver disease, Hepatitis B & C, and hepatocellular carcinoma treatment.
Dr. Shukla has published over 86 original research papers and is known for his expertise in teaching and training Gastroenterologists/Hepatologists for the last 15 years. His publications were awarded the Plenary Award at the Asia–Pacific Association for the Study of Liver (APASL) in 2018 and the Best Research Paper Award at the Vascular Liver Diseases Group (VALDIG) meeting in Switzerland in 2016. He is also a recipient of four National Awards. He has written textbooks on ‘Jaundice’ and ‘Non-alcoholic fatty liver disease’.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 246505 in the list based on the composite score excluding self-citations, and 218800 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 12, with altogether 1169 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is General and Internal Medicine.
(42) Dr Ashok Kumar Choudhury- Institute of Liver and Biliary Sciences:
Dr Ashok Choudhury is currently working as Additional Professor of Hepatology and Liver Transplantation at Institute of Liver and Biliary Science (ILBS) New Delhi. He is a hepatologist, transplant physician, a clinical researcher focused on translational Sciences using both pre-clinical, clinical and translational studies. He was graduated from SCB Medical College Cuttack with 3 Gold Medals, 3 Honors and was the Best Graduate of the outgoing batch and an alumnus of ILBS Deemed University. Fellow Observer, Liver Intensive Therapy Unit at King's College Hospital, London. Visiting Faculty at Division of Gastroenterology, Hepatology and Nutrition, Hum Lee Liver Transplant Centre, Virginia Commonwealth University, Richmond VA USA. Also working closely IIT Delhi for Medical innovations.
He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He holds a rank of 255930 in the list based on the composite score excluding self-citations, and 243737 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 14, with altogether 784 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Surgery.
(43) Dr Abhijit S. Chowdhury- Institute of Post Graduate Medical Education & Research:
Dr Abhijit S. Chowdhury is a Professor at the Institute of Post Graduate Medical Education & Research. He has been recognised as one of the top 2% scientists across the world, as per Stanford University's list of 2026. He ranks 266503 on the list based on the composite score excluding self-citations, and 239587 when all citations are included. By the end of 2025, his h-index, excluding self-citations, stands at 13, with altogether 2760 citations for 2025 (excluding self-citations).
His main field of research is Clinical Medicine; subfield 1 is Gastroenterology and Hepatology, and subfield 2 is Microbiology.
