North America Scientist and University Rankings 2025
North America Medical and Health Sciences / Gastroenterology 760 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 years. As of Jan 30, 2025, the rankings are determined according to the Total H Index. BETA 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 (873.690) 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 H IndexRankings
Ranking Based On Selection: 1
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
gastroenterology
enteric neuroscience
Metrics
H-Index
i10 Index
Citation Counts
163
888
100,518
* Total H IndexRankings
Ranking Based On Selection: 3
medicine
gastroenterology and hepatology
Metrics
H-Index
i10 Index
Citation Counts
160
526
116,018
* Total H IndexRankings
Ranking Based On Selection: 4
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: 5
Gastroenterology
Medicine
Evidence Based Medicine
Metrics
H-Index
i10 Index
Citation Counts
143
380
85,758
* Total H IndexRankings
Ranking Based On Selection: 6
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: 7
Hepatology
Metrics
H-Index
i10 Index
Citation Counts
121
324
52,082
* Total H IndexRankings
Ranking Based On Selection: 8
Gastroenterology
inflammatory bowel disease
Metrics
H-Index
i10 Index
Citation Counts
112
377
73,279
* Total H IndexRankings
Ranking Based On Selection: 9
hepatology
Metrics
H-Index
i10 Index
Citation Counts
109
349
54,517
* Total H IndexRankings
Ranking Based On Selection: 10
medicine
gastroenterology
pancreatitis
genetics
personalized medicine
Metrics
H-Index
i10 Index
Citation Counts
104
358
43,049
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* Total H IndexRankings
Ranking Based On Selection: 11
Cirrhosis
portal hypertension
liver
Metrics
H-Index
i10 Index
Citation Counts
103
257
39,142
* Total H IndexRankings
Ranking Based On Selection: 12
Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
103
267
41,553
* Total H IndexRankings
Ranking Based On Selection: 13
Hepatology
Metrics
H-Index
i10 Index
Citation Counts
102
300
40,309
* Total H IndexRankings
Ranking Based On Selection: 14
Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
100
257
32,379
* Total H IndexRankings
Ranking Based On Selection: 15
Endoscopic Mucosal Resection
Endoscopic Ultrasound
Advanced Endoscopic Imaging
Metrics
H-Index
i10 Index
Citation Counts
98
387
33,377
* Total H IndexRankings
Ranking Based On Selection: 16
Gastroenterology
Second interest
...
Metrics
H-Index
i10 Index
Citation Counts
97
364
55,359
* Total H IndexRankings
Ranking Based On Selection: 17
gastroenterology
epidemiology
inflammatory bowel disease
Metrics
H-Index
i10 Index
Citation Counts
96
314
54,304
* Total H IndexRankings
Ranking Based On Selection: 18
Comparative Effectiveness Research
Inflammatory Bowel Diseases
Chronic Liver Disease
Cancer Prevention
Metrics
H-Index
i10 Index
Citation Counts
96
257
34,911
* Total H IndexRankings
Ranking Based On Selection: 19
gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
96
340
36,674
* Total H IndexRankings
Ranking Based On Selection: 20
Gastric pre-cancer
congenital neonatal diarrhea diseases
microvillus inclusion disease
intracellular vesicle trafficking
Metrics
H-Index
i10 Index
Citation Counts
94
295
27,559
* Total H IndexRankings
Ranking Based On Selection: 21
Gastroenterology
hepatology
Metrics
H-Index
i10 Index
Citation Counts
90
246
32,425
* Total H IndexRankings
Ranking Based On Selection: 22
Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
89
376
34,140
* Total H IndexRankings
Ranking Based On Selection: 23
Gastroenterology
Intestinal diseases
Microbiome
Probiotics
Prebiotics
Metrics
H-Index
i10 Index
Citation Counts
89
287
31,060
* Total H IndexRankings
Ranking Based On Selection: 24
Inflammatory Bowel Disease
Disease Measurement
Fibrosis
Metrics
H-Index
i10 Index
Citation Counts
86
237
29,922
* Total H IndexRankings
Ranking Based On Selection: 25
Health Technology
digital health
virtual reality
gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
86
221
27,086
William Sandborn
University of California San Diego
San Diego, United States
Metrics
H-Index
i10-Index
Citation Counts
212
1,093
196,036
Inflammatory bowel disease
Crohn's disease
ulcerative colitis
Michael Camilleri
Mayo Clinic
Rochester, United States
Metrics
H-Index
i10-Index
Citation Counts
163
888
100,518
gastroenterology
enteric neuroscience
Hashem B El-Serag
Baylor College of Medicine
Houston, United States
Metrics
H-Index
i10-Index
Citation Counts
160
526
116,018
medicine
gastroenterology and hepatology
Rohit Loomba
University of California San Diego
San Diego, United States
Metrics
H-Index
i10-Index
Citation Counts
143
571
88,688
MASLD
fatty liver
NASH
cirrhosis
liver disease
Moayyedi Paul
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
143
380
85,758
Gastroenterology
Medicine
Evidence Based Medicine
Edward V Loftus Jr
Mayo Clinic
Rochester, United States
Metrics
H-Index
i10-Index
Citation Counts
134
488
78,464
Crohn's disease
ulcerative colitis
inflammatory bowel disease
inflammatory bowel diseases
Neil Kaplowitz
University of Southern California
Los Angeles, United States
Metrics
H-Index
i10-Index
Citation Counts
121
324
52,082
Bruce E. Sands
Metrics
H-Index
i10-Index
Citation Counts
112
377
73,279
Gastroenterology
inflammatory bowel disease
Robert J Fontana
University of Michigan
Ann Arbor, United States
Metrics
H-Index
i10-Index
Citation Counts
109
349
54,517
David Whitcomb
University of Pittsburgh
Pittsburgh, United States
Metrics
H-Index
i10-Index
Citation Counts
104
358
43,049
medicine
gastroenterology
pancreatitis
genetics
personalized medicine
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!
Juan G Abraldes
University of Alberta
Edmonton, Canada
Metrics
H-Index
i10-Index
Citation Counts
103
257
39,142
Cirrhosis
portal hypertension
liver
Stephen M Collins
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
103
267
41,553
Jasmohan Bajaj
Metrics
H-Index
i10-Index
Citation Counts
102
300
40,309
Satish Rao
Augusta University
Augusta, United States
Metrics
H-Index
i10-Index
Citation Counts
100
257
32,379
Michael B Wallace
Mayo Clinic
Rochester, United States
Metrics
H-Index
i10-Index
Citation Counts
98
387
33,377
Endoscopic Mucosal Resection
Endoscopic Ultrasound
Advanced Endoscopic Imaging
Richard Hunt
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
97
364
55,359
Gastroenterology
Second interest
...
Gilaad G Kaplan
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
96
314
54,304
gastroenterology
epidemiology
inflammatory bowel disease
Siddharth Singh
University of California San Diego
San Diego, United States
Metrics
H-Index
i10-Index
Citation Counts
96
257
34,911
Comparative Effectiveness Research
Inflammatory Bowel Diseases
Chronic Liver Disease
Cancer Prevention
Vay Liang Go
University of California Los Angeles
Los Angeles, United States
Metrics
H-Index
i10-Index
Citation Counts
96
340
36,674
James Goldenring
Vanderbilt University
Nashville, United States
Metrics
H-Index
i10-Index
Citation Counts
94
295
27,559
Gastric pre-cancer
congenital neonatal diarrhea diseases
microvillus inclusion disease
intracellular vesicle trafficking
Shelly C Lu
Cedars-Sinai Medical Center
California, United States
Metrics
H-Index
i10-Index
Citation Counts
90
246
32,425
Gastroenterology
hepatology
David Rubin
University of Chicago
Chicago, United States
Metrics
H-Index
i10-Index
Citation Counts
89
376
34,140
Philip M Sherman
Hospital for Sick Children
Toronto, Canada
Metrics
H-Index
i10-Index
Citation Counts
89
287
31,060
Gastroenterology
Intestinal diseases
Microbiome
Probiotics
Prebiotics
Peter Higgins
University of Michigan
Ann Arbor, United States
Metrics
H-Index
i10-Index
Citation Counts
86
237
29,922
Inflammatory Bowel Disease
Disease Measurement
Fibrosis
Brennan Spiegel
Cedars-Sinai Medical Center
California, United States
Metrics
H-Index
i10-Index
Citation Counts
86
221
27,086
Health Technology
digital health
virtual reality
gastroenterology