Subject Rankings

United States Subject Rankings 2025

AD Scientific Index (Alper-Doger Scientific Index) offers the broadest spectrum of branches, providing analysis in 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses can be based on indicators such as the H-index, i10-index, and citation count, as well as their values from the last 6 years. As of Nov 24, 2024, rankings are according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in beta. This is due to the exclusion of (873.864) scientists categorized under 'others,' whose profiles cannot yet be determined, edited, or classified. As these fields are updated, the rankings will adjust accordingly. Please keep this in mind. See Also: [University Subject Rankings]

* 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
209
1,081
192,421
* Total H IndexRankings
Ranking Based On Selection :2
Michael Camilleri
gastroenterology
enteric neuroscience
Metrics
H-Index
i10 Index
Citation Counts
163
881
99,115
* Total H IndexRankings
Ranking Based On Selection :3
Hashem B El-Serag
medicine
gastroenterology and hepatology
Metrics
H-Index
i10 Index
Citation Counts
158
522
114,333
* Total H IndexRankings
Ranking Based On Selection :4
Rohit Loomba
MASLD
fatty liver
NASH
cirrhosis
liver disease
Metrics
H-Index
i10 Index
Citation Counts
140
558
84,243
* Total H IndexRankings
Ranking Based On Selection :5
Edward V Loftus Jr
Crohn's disease
ulcerative colitis
inflammatory bowel disease
inflammatory bowel diseases
Metrics
H-Index
i10 Index
Citation Counts
134
481
76,933
* Total H IndexRankings
Ranking Based On Selection :7
Bruce E. Sands
Gastroenterology
inflammatory bowel disease
Metrics
H-Index
i10 Index
Citation Counts
110
366
71,569
* Total H IndexRankings
Ranking Based On Selection :9
David Whitcomb
medicine
gastroenterology
pancreatitis
genetics
personalized medicine
Metrics
H-Index
i10 Index
Citation Counts
103
355
42,466
* Total H IndexRankings
Ranking Based On Selection :12
Michael B Wallace
Endoscopic Mucosal Resection
Endoscopic Ultrasound
Advanced Endoscopic Imaging
Metrics
H-Index
i10 Index
Citation Counts
98
382
32,385
* Total H IndexRankings
Ranking Based On Selection :14
Siddharth Singh
Comparative Effectiveness Research
Inflammatory Bowel Diseases
Chronic Liver Disease
Cancer Prevention
Metrics
H-Index
i10 Index
Citation Counts
95
256
33,833
* Total H IndexRankings
Ranking Based On Selection :15
James Goldenring
Gastric pre-cancer
congenital neonatal diarrhea diseases
microvillus inclusion disease
intracellular vesicle trafficking
Metrics
H-Index
i10 Index
Citation Counts
93
293
27,295
* Total H IndexRankings
Ranking Based On Selection :18
Brennan Spiegel
Health Technology
digital health
virtual reality
gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
86
218
26,575
* Total H IndexRankings
Ranking Based On Selection :19
Michael W Fried
Hepatology
Viral Hepatitis
Real-World Evidence
Metrics
H-Index
i10 Index
Citation Counts
86
244
41,893
* Total H IndexRankings
Ranking Based On Selection :20
Peter Higgins
Inflammatory Bowel Disease
Disease Measurement
Fibrosis
Metrics
H-Index
i10 Index
Citation Counts
85
232
29,217
* Total H IndexRankings
Ranking Based On Selection :21
John Lamont
Medicine
gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
84
196
26,901
* Total H IndexRankings
Ranking Based On Selection :22
Jason Dominitz
colon
hepatitis
cancer
screening
Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
83
198
30,371
* Total H IndexRankings
Ranking Based On Selection :23
Nathan Bass
Liver Diseases
Gastroenterology
Internal Medicine
Metrics
H-Index
i10 Index
Citation Counts
82
189
33,533
* Total H IndexRankings
Ranking Based On Selection :24
Keith T Wilson
Gastroenterology
immunology
cancer
inflammation
Metrics
H-Index
i10 Index
Citation Counts
81
190
21,984
* Total H IndexRankings
Ranking Based On Selection :25
Marc G Ghany
Hepatology
Hepatitis B
Hepatitis C
Clinical & Translational Research
Metrics
H-Index
i10 Index
Citation Counts
80
175
30,756
* Total H Index Rankings
Rankings
Ranking Based On Selection: 1
William Sandborn
Metrics
H-Index
i10-Index
Citation Counts
209
1,081
192,421
Inflammatory bowel disease
Crohn's disease
ulcerative colitis
* Total H Index Rankings
Rankings
Ranking Based On Selection: 2
Michael Camilleri
Metrics
H-Index
i10-Index
Citation Counts
163
881
99,115
* Total H Index Rankings
Rankings
Ranking Based On Selection: 3
Hashem B El-Serag
Metrics
H-Index
i10-Index
Citation Counts
158
522
114,333
* Total H Index Rankings
Rankings
Ranking Based On Selection: 4
Rohit Loomba
Metrics
H-Index
i10-Index
Citation Counts
140
558
84,243
* Total H Index Rankings
Rankings
Ranking Based On Selection: 5
Edward V Loftus Jr
Metrics
H-Index
i10-Index
Citation Counts
134
481
76,933
Crohn's disease
ulcerative colitis
inflammatory bowel disease
inflammatory bowel diseases
* Total H Index Rankings
Rankings
Ranking Based On Selection: 6
Neil Kaplowitz
Metrics
H-Index
i10-Index
Citation Counts
121
324
51,522
* Total H Index Rankings
Rankings
Ranking Based On Selection: 7
Bruce E. Sands
Metrics
H-Index
i10-Index
Citation Counts
110
366
71,569
* Total H Index Rankings
Rankings
Ranking Based On Selection: 8
Robert J Fontana
Metrics
H-Index
i10-Index
Citation Counts
107
347
53,748
* Total H Index Rankings
Rankings
Ranking Based On Selection: 9
David Whitcomb
Metrics
H-Index
i10-Index
Citation Counts
103
355
42,466
medicine
gastroenterology
pancreatitis
genetics
personalized medicine
* Total H Index Rankings
Rankings
Ranking Based On Selection: 10
Jasmohan Bajaj
Metrics
H-Index
i10-Index
Citation Counts
102
294
39,249
* Total H Index Rankings
Rankings
Ranking Based On Selection: 11
Satish Rao
Metrics
H-Index
i10-Index
Citation Counts
100
258
32,741
* Total H Index Rankings
Rankings
Ranking Based On Selection: 12
Michael B Wallace
Metrics
H-Index
i10-Index
Citation Counts
98
382
32,385
Endoscopic Mucosal Resection
Endoscopic Ultrasound
Advanced Endoscopic Imaging
* Total H Index Rankings
Rankings
Ranking Based On Selection: 13
Vay Liang Go
Metrics
H-Index
i10-Index
Citation Counts
96
339
36,445
* Total H Index Rankings
Rankings
Ranking Based On Selection: 14
Siddharth Singh
Metrics
H-Index
i10-Index
Citation Counts
95
256
33,833
Comparative Effectiveness Research
Inflammatory Bowel Diseases
Chronic Liver Disease
Cancer Prevention
* Total H Index Rankings
Rankings
Ranking Based On Selection: 15
James Goldenring
Metrics
H-Index
i10-Index
Citation Counts
93
293
27,295
Gastric pre-cancer
congenital neonatal diarrhea diseases
microvillus inclusion disease
intracellular vesicle trafficking
* Total H Index Rankings
Rankings
Ranking Based On Selection: 16
Shelly C Lu
Metrics
H-Index
i10-Index
Citation Counts
90
246
32,026
* Total H Index Rankings
Rankings
Ranking Based On Selection: 17
David Rubin
Metrics
H-Index
i10-Index
Citation Counts
88
368
33,048
* Total H Index Rankings
Rankings
Ranking Based On Selection: 18
Brennan Spiegel
Metrics
H-Index
i10-Index
Citation Counts
86
218
26,575
Health Technology
digital health
virtual reality
gastroenterology
* Total H Index Rankings
Rankings
Ranking Based On Selection: 19
Michael W Fried
Metrics
H-Index
i10-Index
Citation Counts
86
244
41,893
* Total H Index Rankings
Rankings
Ranking Based On Selection: 20
Peter Higgins
Metrics
H-Index
i10-Index
Citation Counts
85
232
29,217
Inflammatory Bowel Disease
Disease Measurement
Fibrosis
* Total H Index Rankings
Rankings
Ranking Based On Selection: 21
John Lamont
Metrics
H-Index
i10-Index
Citation Counts
84
196
26,901
* Total H Index Rankings
Rankings
Ranking Based On Selection: 22
Jason Dominitz
Metrics
H-Index
i10-Index
Citation Counts
83
198
30,371
* Total H Index Rankings
Rankings
Ranking Based On Selection: 23
Nathan Bass
Metrics
H-Index
i10-Index
Citation Counts
82
189
33,533
* Total H Index Rankings
Rankings
Ranking Based On Selection: 24
Keith T Wilson
Metrics
H-Index
i10-Index
Citation Counts
81
190
21,984
* Total H Index Rankings
Rankings
Ranking Based On Selection: 25
Marc G Ghany
Metrics
H-Index
i10-Index
Citation Counts
80
175
30,756
Hepatology
Hepatitis B
Hepatitis C
Clinical & Translational Research