World Scientist and University Rankings 2025
Canada Medical and Health Sciences 65 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 Mar 09, 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 (998.570) 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
Gastroenterology
Medicine
Evidence Based Medicine
Metrics
H-Index
i10 Index
Citation Counts
143
381
86,114
* Total H IndexRankings
Ranking Based On Selection: 2
Cirrhosis
portal hypertension
liver
Metrics
H-Index
i10 Index
Citation Counts
103
256
39,444
* Total H IndexRankings
Ranking Based On Selection: 3
Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
104
264
41,566
* Total H IndexRankings
Ranking Based On Selection: 4
Gastroenterology
Second interest
Metrics
H-Index
i10 Index
Citation Counts
96
362
54,976
* Total H IndexRankings
Ranking Based On Selection: 5
gastroenterology
epidemiology
inflammatory bowel disease
Metrics
H-Index
i10 Index
Citation Counts
97
314
55,274
* Total H IndexRankings
Ranking Based On Selection: 6
Gastroenterology
Intestinal diseases
Microbiome
Probiotics
Prebiotics
Metrics
H-Index
i10 Index
Citation Counts
90
293
31,396
* Total H IndexRankings
Ranking Based On Selection: 7
gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
84
179
28,478
* Total H IndexRankings
Ranking Based On Selection: 8
lymphocyte signalling gastroenterology immunology
Metrics
H-Index
i10 Index
Citation Counts
83
262
26,821
* Total H IndexRankings
Ranking Based On Selection: 9
Intestinal Inflammation
Clinical gastroenterology
inflammatory bowel disease
C. dif colitis
Metrics
H-Index
i10 Index
Citation Counts
77
185
25,274
* Total H IndexRankings
Ranking Based On Selection: 10
liver disease
gastroenterology
neuroscience
Metrics
H-Index
i10 Index
Citation Counts
71
204
18,086
360° Institutional Performance & Benchmarking Click Here for Live Demo
Through advanced, institution-specific analytics and benchmarking, gain data-driven strategic insights into your academic performance, global standing, and competitive strengths. Compare your institution with 20 similarly ranked institutions at city, country, regional, and global levels, as well as with those in similar standings across 13 subjects, to uncover your institution’s strengths. More Info
* Total H IndexRankings
Ranking Based On Selection: 11
Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
71
261
25,774
* Total H IndexRankings
Ranking Based On Selection: 12
gastroenterology
microbiota-gut brain axis
Metrics
H-Index
i10 Index
Citation Counts
71
133
23,757
* Total H IndexRankings
Ranking Based On Selection: 13
gastrointestinal motility
interstitial cells of Cajal
autonomic nervous system
gastroenterology
neurogastroenterology
Metrics
H-Index
i10 Index
Citation Counts
66
200
18,709
* Total H IndexRankings
Ranking Based On Selection: 14
Hepatology
Metrics
H-Index
i10 Index
Citation Counts
56
229
15,172
* Total H IndexRankings
Ranking Based On Selection: 15
Hepatology
Metrics
H-Index
i10 Index
Citation Counts
55
123
8,864
* Total H IndexRankings
Ranking Based On Selection: 16
Gastroenterology
Metrics
H-Index
i10 Index
Citation Counts
54
92
18,614
* Total H IndexRankings
Ranking Based On Selection: 17
gastroenteritis
Metrics
H-Index
i10 Index
Citation Counts
50
162
15,778
* Total H IndexRankings
Ranking Based On Selection: 18
Intensive Care Medicine
Hepatology
Liver Transplantation
Metrics
H-Index
i10 Index
Citation Counts
50
117
9,131
* Total H IndexRankings
Ranking Based On Selection: 19
Pediatric Gastroenterology
Hepatology & Nutrition
Metrics
H-Index
i10 Index
Citation Counts
49
121
11,488
* Total H IndexRankings
Ranking Based On Selection: 20
Pediatric Gastroenterology - Neurogastroenterology
Metrics
H-Index
i10 Index
Citation Counts
47
108
8,658
* Total H IndexRankings
Ranking Based On Selection: 21
Hepatology
liver transplantation
hepatocellular carcinoma
medical education
Metrics
H-Index
i10 Index
Citation Counts
44
86
22,368
* Total H IndexRankings
Ranking Based On Selection: 22
Gastroenterology and Hepatology
Metrics
H-Index
i10 Index
Citation Counts
43
84
8,835
* Total H IndexRankings
Ranking Based On Selection: 23
Pediatric Nutrition
Gastroenterology
Malnutrition
nutritional assessment
Metrics
H-Index
i10 Index
Citation Counts
42
75
8,628
* Total H IndexRankings
Ranking Based On Selection: 24
pediatric gastronenterology
IBD
Eosinophilic esophagitis
Metrics
H-Index
i10 Index
Citation Counts
41
89
5,572
* Total H IndexRankings
Ranking Based On Selection: 25
Hepatology & Liver Transplantation
Metrics
H-Index
i10 Index
Citation Counts
41
73
11,103
Moayyedi Paul
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
143
381
86,114
Gastroenterology
Medicine
Evidence Based Medicine
Juan G Abraldes
University of Alberta
Edmonton, Canada
Metrics
H-Index
i10-Index
Citation Counts
103
256
39,444
Cirrhosis
portal hypertension
liver
Stephen M Collins
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
104
264
41,566
Richard Hunt
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
96
362
54,976
Gastroenterology
Second interest
Gilaad G Kaplan
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
97
314
55,274
gastroenterology
epidemiology
inflammatory bowel disease
Philip M Sherman
Hospital for Sick Children
Toronto, Canada
Metrics
H-Index
i10-Index
Citation Counts
90
293
31,396
Gastroenterology
Intestinal diseases
Microbiome
Probiotics
Prebiotics
Elena F Verdu
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
84
179
28,478
Dermot Kelleher
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
83
262
26,821
lymphocyte signalling gastroenterology immunology
Paul L Beck
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
77
185
25,274
Intestinal Inflammation
Clinical gastroenterology
inflammatory bowel disease
C. dif colitis
Mark Gordon Swain
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
71
204
18,086
liver disease
gastroenterology
neuroscience
360° Institutional Performance & Benchmarking Click Here for Live Demo
Through advanced, institution-specific analytics and benchmarking, gain data-driven strategic insights into your academic performance, global standing, and competitive strengths. Compare your institution with 20 similarly ranked institutions at city, country, regional, and global levels, as well as with those in similar standings across 13 subjects, to uncover your institution’s strengths. More Info
David Armstrong
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
71
261
25,774
Bercik Premysl
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
71
133
23,757
gastroenterology
microbiota-gut brain axis
Jan D Huizinga
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
66
200
18,709
gastrointestinal motility
interstitial cells of Cajal
autonomic nervous system
gastroenterology
neurogastroenterology
Gerald Minuk
University of Manitoba
Winnipeg, Canada
Metrics
H-Index
i10-Index
Citation Counts
56
229
15,172
Binita Kamath
Hospital for Sick Children
Toronto, Canada
Metrics
H-Index
i10-Index
Citation Counts
55
123
8,864
Grigorios I Leontiadis
McMaster University
Hamilton, Canada
Metrics
H-Index
i10-Index
Citation Counts
54
92
18,614
Stephen B Freedman
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
50
162
15,778
Constantine Karvellas
University of Alberta
Edmonton, Canada
Metrics
H-Index
i10-Index
Citation Counts
50
117
9,131
Intensive Care Medicine
Hepatology
Liver Transplantation
Simon Ling
Hospital for Sick Children
Toronto, Canada
Metrics
H-Index
i10-Index
Citation Counts
49
121
11,488
Pediatric Gastroenterology
Hepatology & Nutrition
Christophe Faure
Université de Montréal
Montréal, Canada
Metrics
H-Index
i10-Index
Citation Counts
47
108
8,658
Pediatric Gastroenterology - Neurogastroenterology
Kelly Burak
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
44
86
22,368
Hepatology
liver transplantation
hepatocellular carcinoma
medical education
Abdel Aziz Shaheen
University of Calgary
Calgary, Canada
Metrics
H-Index
i10-Index
Citation Counts
43
84
8,835
Gastroenterology and Hepatology
Jessie M Hulst
Hospital for Sick Children
Toronto, Canada
Metrics
H-Index
i10-Index
Citation Counts
42
75
8,628
Pediatric Nutrition
Gastroenterology
Malnutrition
nutritional assessment
Hien Quoc Huynh
University of Alberta
Edmonton, Canada
Metrics
H-Index
i10-Index
Citation Counts
41
89
5,572
pediatric gastronenterology
IBD
Eosinophilic esophagitis
Kevork M Peltekian
Dalhousie University
Halifax, Canada
Metrics
H-Index
i10-Index
Citation Counts
41
73
11,103
Hepatology & Liver Transplantation