Citation Rankings
Highly Cited Researchers

Medical and Health Sciences / Gastroenterology Highly Cited Researchers 2.581 Scientists Citation Rankings - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection: 1
United States
William Sandborn
Inflammatory bowel disease
Crohn's disease
ulcerative colitis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
196,036
74,456
0.380
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Australia
Nicholas Talley
Gastroenterology
Hepatology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
152,838
34,792
0.228
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Ireland
John Cryan
Neuropharmacology
stress
neurogastroenterology
microbiome
psychopharmacology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
124,910
72,942
0.584
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Germany
Peter Galle
Gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
117,494
49,509
0.421
* Total Citation Counts Rankings
Ranking Based On Selection: 5
United States
Hashem B El-Serag
medicine
gastroenterology and hepatology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
116,018
44,234
0.381
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Germany
Dieter Häussinger
Hepatologie
Zellbiologie
Gastroenterologie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107,391
27,600
0.257
* Total Citation Counts Rankings
Ranking Based On Selection: 7
United States
Michael Camilleri
gastroenterology
enteric neuroscience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,518
31,569
0.314
* Total Citation Counts Rankings
Ranking Based On Selection: 8
United States
Yngve Falck Ytter
Hepatology
Evidence-based Medicine
GRADE
guidelines
Gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
98,846
52,569
0.532
* Total Citation Counts Rankings
Ranking Based On Selection: 9
United States
Rohit Loomba
MASLD
fatty liver
NASH
cirrhosis
liver disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,688
69,717
0.786
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Hong Kong
Francis Kl Chan
Gastroenterology
Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,781
40,987
0.472
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Germany
Frank Tacke
Gastroenterology
Hepatology
Immunology
Infectious Diseases
Critical Care Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,969
50,929
0.592
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Canada
Moayyedi Paul
Gastroenterology
Medicine
Evidence Based Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,758
32,781
0.382
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Australia
Michael Kamm
Gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83,381
18,937
0.227
* Total Citation Counts Rankings
Ranking Based On Selection: 14
India
Rakesh Aggarwal
Gastroenterology
Viral hepatitis
Public Health
Health economics
Scientific communication
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
82,351
42,706
0.519
* Total Citation Counts Rankings
Ranking Based On Selection: 15
United States
Edward V Loftus Jr
Crohn's disease
ulcerative colitis
inflammatory bowel disease
inflammatory bowel diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78,464
29,824
0.380
* Total Citation Counts Rankings
Ranking Based On Selection: 16
United Kingdom
Jack Satsangi
Gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,528
21,163
0.288
* Total Citation Counts Rankings
Ranking Based On Selection: 17
United States
Bruce E. Sands
Gastroenterology
inflammatory bowel disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,279
35,288
0.482
* Total Citation Counts Rankings
Ranking Based On Selection: 18
United Kingdom
William MC Rosenberg
Hepatology
Gastroenterology
Immunology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,987
15,339
0.216
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Italy
Antonio Craxi
Hepatology - Gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,776
20,930
0.318
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Hong Kong
Siew C Ng
Gastroenterology
Endoscopy
Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,174
46,460
0.747
* Total Citation Counts Rankings
Ranking Based On Selection: 21
United Arab Emirates
JAZ Jankowski
Gastroenterology
Genomics and Aspirin Chemoprevention
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,522
28,294
0.467
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Hong Kong
Man Fung Yuen
Hepatology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,881
24,583
0.411
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Taiwan
JH Kao
Hepatology and gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,612
17,648
0.317
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Canada
Richard Hunt
Gastroenterology
Second interest
...
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,359
12,441
0.225
* Total Citation Counts Rankings
Ranking Based On Selection: 25
United States
Robert J Fontana
hepatology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,517
18,236
0.335
* Total Citation Counts Rankings
Rankings
878
United States
358
11
Ranking Based On Selection: 1
William Sandborn
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
196,036
74,456
0.380
Inflammatory bowel disease
Crohn's disease
ulcerative colitis
* Total Citation Counts Rankings
Rankings
1,417
Australia
38
1
Ranking Based On Selection: 2
Nicholas Talley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
152,838
34,792
0.228
* Total Citation Counts Rankings
Rankings
2,081
Ireland
5
1
Ranking Based On Selection: 3
John Cryan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
124,910
72,942
0.584
Neuropharmacology
stress
neurogastroenterology
microbiome
psychopharmacology
* Total Citation Counts Rankings
Rankings
2,340
Germany
65
1
Ranking Based On Selection: 4
Peter Galle
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
117,494
49,509
0.421
* Total Citation Counts Rankings
Rankings
2,399
United States
1,129
4
Ranking Based On Selection: 5
Hashem B El-Serag
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
116,018
44,234
0.381
* Total Citation Counts Rankings
Rankings
2,814
Germany
88
3
Ranking Based On Selection: 6
Dieter Häussinger
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
107,391
27,600
0.257
* Total Citation Counts Rankings
Rankings
3,203
United States
1,530
11
Ranking Based On Selection: 7
Michael Camilleri
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,518
31,569
0.314
* Total Citation Counts Rankings
Rankings
3,294
United States
1,571
5
Ranking Based On Selection: 8
Yngve Falck Ytter
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
98,846
52,569
0.532
Hepatology
Evidence-based Medicine
GRADE
guidelines
Gastroenterology
* Total Citation Counts Rankings
Rankings
4,027
United States
1,908
44
Ranking Based On Selection: 9
Rohit Loomba
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,688
69,717
0.786
* Total Citation Counts Rankings
Rankings
4,161
Hong Kong
21
7
Ranking Based On Selection: 10
Francis Kl Chan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,781
40,987
0.472
* Total Citation Counts Rankings
Rankings
4,231
Germany
148
3
Ranking Based On Selection: 11
Frank Tacke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,969
50,929
0.592
Gastroenterology
Hepatology
Immunology
Infectious Diseases
Critical Care Medicine
* Total Citation Counts Rankings
Rankings
4,247
Canada
164
28
Ranking Based On Selection: 12
Moayyedi Paul
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,758
32,781
0.382
* Total Citation Counts Rankings
Rankings
4,448
Australia
178
17
Ranking Based On Selection: 13
Michael Kamm
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
83,381
18,937
0.227
* Total Citation Counts Rankings
Rankings
4,557
India
54
1
Ranking Based On Selection: 14
Rakesh Aggarwal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
82,351
42,706
0.519
Gastroenterology
Viral hepatitis
Public Health
Health economics
Scientific communication
* Total Citation Counts Rankings
Rankings
4,986
United States
2,362
20
Ranking Based On Selection: 15
Edward V Loftus Jr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78,464
29,824
0.380
Crohn's disease
ulcerative colitis
inflammatory bowel disease
inflammatory bowel diseases
* Total Citation Counts Rankings
Rankings
5,525
United Kingdom
460
13
Ranking Based On Selection: 16
Jack Satsangi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,528
21,163
0.288
* Total Citation Counts Rankings
Rankings
5,546
United States
2,630
14
Ranking Based On Selection: 17
Bruce E. Sands
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,279
35,288
0.482
* Total Citation Counts Rankings
Rankings
5,859
United Kingdom
494
51
Ranking Based On Selection: 18
William MC Rosenberg
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,987
15,339
0.216
* Total Citation Counts Rankings
Rankings
6,622
Italy
347
1
Ranking Based On Selection: 19
Antonio Craxi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,776
20,930
0.318
* Total Citation Counts Rankings
Rankings
7,256
Hong Kong
47
13
Ranking Based On Selection: 20
Siew C Ng
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,174
46,460
0.747
* Total Citation Counts Rankings
Rankings
7,573
United Arab Emirates
6
1
Ranking Based On Selection: 21
JAZ Jankowski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,522
28,294
0.467
Gastroenterology
Genomics and Aspirin Chemoprevention
* Total Citation Counts Rankings
Rankings
7,696
Hong Kong
52
15
Ranking Based On Selection: 22
Man Fung Yuen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,881
24,583
0.411
* Total Citation Counts Rankings
Rankings
8,703
Taiwan
26
11
Ranking Based On Selection: 23
JH Kao
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,612
17,648
0.317
* Total Citation Counts Rankings
Rankings
8,764
Canada
334
44
Ranking Based On Selection: 24
Richard Hunt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,359
12,441
0.225
* Total Citation Counts Rankings
Rankings
8,985
United States
4,290
79
Ranking Based On Selection: 25
Robert J Fontana
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,517
18,236
0.335