World Scientist and University Rankings 2025

Medical and Health Sciences / Gastroenterology 2.426 Scientists Subject Rankings - 2025

The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 yearsAs of Feb 01, 2025, the rankings are determined according to the Total H IndexBETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (870.053) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].

Total 2.426 scientists, 101 country, 899 institution
* Total H IndexRankings
Ranking Based On Selection: 1
William Sandborn
Inflammatory bowel disease
Crohn's disease
ulcerative colitis
Metrics
H-Index
i10 Index
Citation Counts
212
1,093
196,036
* Total H IndexRankings
Ranking Based On Selection: 2
Nicholas Talley
Gastroenterology
Hepatology
Metrics
H-Index
i10 Index
Citation Counts
201
1,030
152,838
* Total H IndexRankings
Ranking Based On Selection: 3
John Cryan
Neuropharmacology
stress
neurogastroenterology
microbiome
psychopharmacology
Metrics
H-Index
i10 Index
Citation Counts
168
656
124,910
* Total H IndexRankings
Ranking Based On Selection: 4
Michael Camilleri
gastroenterology
enteric neuroscience
Metrics
H-Index
i10 Index
Citation Counts
163
888
100,518
* Total H IndexRankings
Ranking Based On Selection: 5
Hashem B El-Serag
medicine
gastroenterology and hepatology
Metrics
H-Index
i10 Index
Citation Counts
160
526
116,018
* Total H IndexRankings
Ranking Based On Selection: 7
Rohit Loomba
MASLD
fatty liver
NASH
cirrhosis
liver disease
Metrics
H-Index
i10 Index
Citation Counts
143
571
88,688
* Total H IndexRankings
Ranking Based On Selection: 8
Moayyedi Paul
Gastroenterology
Medicine
Evidence Based Medicine
Metrics
H-Index
i10 Index
Citation Counts
143
380
85,758
* Total H IndexRankings
Ranking Based On Selection: 10
Francis Kl Chan
Gastroenterology
Medicine
Metrics
H-Index
i10 Index
Citation Counts
138
495
86,781

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

* Total H IndexRankings
Ranking Based On Selection: 11
Edward V Loftus Jr
Crohn's disease
ulcerative colitis
inflammatory bowel disease
inflammatory bowel diseases
Metrics
H-Index
i10 Index
Citation Counts
134
488
78,464
* Total H IndexRankings
Ranking Based On Selection: 12
Frank Tacke
Gastroenterology
Hepatology
Immunology
Infectious Diseases
Critical Care Medicine
Metrics
H-Index
i10 Index
Citation Counts
132
542
85,969
* Total H IndexRankings
Ranking Based On Selection: 13
Dieter Häussinger
Hepatologie
Zellbiologie
Gastroenterologie
Metrics
H-Index
i10 Index
Citation Counts
125
841
107,391
* Total H IndexRankings
Ranking Based On Selection: 16
Massimo Pinzani
hepatology
chronic liver disease
tissue fibrosis
regenerative medicine
Metrics
H-Index
i10 Index
Citation Counts
115
284
49,370
* Total H IndexRankings
Ranking Based On Selection: 17
Siew C Ng
Gastroenterology
Endoscopy
Medicine
Metrics
H-Index
i10 Index
Citation Counts
114
374
62,174
* Total H IndexRankings
Ranking Based On Selection: 18
Antonio Craxi
Hepatology - Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
113
470
65,776
* Total H IndexRankings
Ranking Based On Selection: 19
Bruce E. Sands
Gastroenterology
inflammatory bowel disease
Metrics
H-Index
i10 Index
Citation Counts
112
377
73,279
* Total H IndexRankings
Ranking Based On Selection: 22
Paolo Angeli
Hepatology
Liver Transplantation
Internal Medicine
Metrics
H-Index
i10 Index
Citation Counts
105
301
46,378
* Total H IndexRankings
Ranking Based On Selection: 23
JH Kao
Hepatology and gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
105
526
55,612
* Total H IndexRankings
Ranking Based On Selection: 24
David Whitcomb
medicine
gastroenterology
pancreatitis
genetics
personalized medicine
Metrics
H-Index
i10 Index
Citation Counts
104
358
43,049
* Total H IndexRankings
Ranking Based On Selection: 25
Juan G Abraldes
Cirrhosis
portal hypertension
liver
Metrics
H-Index
i10 Index
Citation Counts
103
257
39,142
* Total H Index Rankings
Rankings
Ranking Based On Selection: 1
William Sandborn
Metrics
H-Index
i10-Index
Citation Counts
212
1,093
196,036
Inflammatory bowel disease
Crohn's disease
ulcerative colitis
* Total H Index Rankings
Rankings
Ranking Based On Selection: 2
Nicholas Talley
Metrics
H-Index
i10-Index
Citation Counts
201
1,030
152,838
* Total H Index Rankings
Rankings
Ranking Based On Selection: 3
John Cryan
Metrics
H-Index
i10-Index
Citation Counts
168
656
124,910
Neuropharmacology
stress
neurogastroenterology
microbiome
psychopharmacology
* Total H Index Rankings
Rankings
Ranking Based On Selection: 4
Michael Camilleri
Metrics
H-Index
i10-Index
Citation Counts
163
888
100,518
* Total H Index Rankings
Rankings
Ranking Based On Selection: 5
Hashem B El-Serag
Metrics
H-Index
i10-Index
Citation Counts
160
526
116,018
* Total H Index Rankings
Rankings
Ranking Based On Selection: 6
Michael Kamm
Metrics
H-Index
i10-Index
Citation Counts
156
519
83,381
* Total H Index Rankings
Rankings
Ranking Based On Selection: 7
Rohit Loomba
Metrics
H-Index
i10-Index
Citation Counts
143
571
88,688
* Total H Index Rankings
Rankings
Ranking Based On Selection: 8
Moayyedi Paul
Metrics
H-Index
i10-Index
Citation Counts
143
380
85,758
* Total H Index Rankings
Rankings
Ranking Based On Selection: 9
Peter Galle
Metrics
H-Index
i10-Index
Citation Counts
141
718
117,494
* Total H Index Rankings
Rankings
Ranking Based On Selection: 10
Francis Kl Chan
Metrics
H-Index
i10-Index
Citation Counts
138
495
86,781

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

* Total H Index Rankings
Rankings
Ranking Based On Selection: 11
Edward V Loftus Jr
Metrics
H-Index
i10-Index
Citation Counts
134
488
78,464
Crohn's disease
ulcerative colitis
inflammatory bowel disease
inflammatory bowel diseases
* Total H Index Rankings
Rankings
Ranking Based On Selection: 12
Frank Tacke
Metrics
H-Index
i10-Index
Citation Counts
132
542
85,969
Gastroenterology
Hepatology
Immunology
Infectious Diseases
Critical Care Medicine
* Total H Index Rankings
Rankings
Ranking Based On Selection: 13
Dieter Häussinger
Metrics
H-Index
i10-Index
Citation Counts
125
841
107,391
* Total H Index Rankings
Rankings
Ranking Based On Selection: 14
Neil Kaplowitz
Metrics
H-Index
i10-Index
Citation Counts
121
324
52,082
* Total H Index Rankings
Rankings
Ranking Based On Selection: 15
Man Fung Yuen
Metrics
H-Index
i10-Index
Citation Counts
116
531
59,881
* Total H Index Rankings
Rankings
Ranking Based On Selection: 16
Massimo Pinzani
Metrics
H-Index
i10-Index
Citation Counts
115
284
49,370
hepatology
chronic liver disease
tissue fibrosis
regenerative medicine
* Total H Index Rankings
Rankings
Ranking Based On Selection: 17
Siew C Ng
Metrics
H-Index
i10-Index
Citation Counts
114
374
62,174
* Total H Index Rankings
Rankings
Ranking Based On Selection: 18
Antonio Craxi
Metrics
H-Index
i10-Index
Citation Counts
113
470
65,776
* Total H Index Rankings
Rankings
Ranking Based On Selection: 19
Bruce E. Sands
Metrics
H-Index
i10-Index
Citation Counts
112
377
73,279
* Total H Index Rankings
Rankings
Ranking Based On Selection: 20
Jack Satsangi
Metrics
H-Index
i10-Index
Citation Counts
111
277
73,528
* Total H Index Rankings
Rankings
Ranking Based On Selection: 21
Robert J Fontana
Metrics
H-Index
i10-Index
Citation Counts
109
349
54,517
* Total H Index Rankings
Rankings
Ranking Based On Selection: 22
Paolo Angeli
Metrics
H-Index
i10-Index
Citation Counts
105
301
46,378
Hepatology
Liver Transplantation
Internal Medicine
* Total H Index Rankings
Rankings
Ranking Based On Selection: 23
JH Kao
Metrics
H-Index
i10-Index
Citation Counts
105
526
55,612
* Total H Index Rankings
Rankings
Ranking Based On Selection: 24
David Whitcomb
Metrics
H-Index
i10-Index
Citation Counts
104
358
43,049
medicine
gastroenterology
pancreatitis
genetics
personalized medicine
* Total H Index Rankings
Rankings
Ranking Based On Selection: 25
Juan G Abraldes
Metrics
H-Index
i10-Index
Citation Counts
103
257
39,142