Top 100 Scientists
Oceania Medical and Health Sciences / Gastroenterology Top 100 Scientists 2025
Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (910,673 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.
Gastroenterology
Hepatology
Metrics
H-Index
i10 Index
Citation
201
1,030
152,838
Gastroenterology
Metrics
H-Index
i10 Index
Citation
156
519
83,381
Gastroenterology
Hepatology
Microbiome
Health Service Innovation
Metrics
H-Index
i10 Index
Citation
83
265
27,261
Gastrointestinal cancer
clinical trials
Metrics
H-Index
i10 Index
Citation
81
308
39,439
hepatology
gastroenterology
Metrics
H-Index
i10 Index
Citation
70
247
27,457
liver disease
iron
Metrics
H-Index
i10 Index
Citation
70
212
18,768
Gastroenterology
Gastrointestinal Oncology
Screening
Surveillance
Prevention
Metrics
H-Index
i10 Index
Citation
69
115
47,200
Gastroenterology Inflammatory bowel diseases
Metrics
H-Index
i10 Index
Citation
68
201
18,507
gastroenterology
Metrics
H-Index
i10 Index
Citation
68
170
12,751
Barretts Oesophagus
Advanced Endoscopy
Metrics
H-Index
i10 Index
Citation
66
154
17,978
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Pancreas
Pancreatitis
Metabolism
Gastroenterology
Epidemiology
Metrics
H-Index
i10 Index
Citation
65
191
15,922
* Rankings
Ranking Based
On Selection: 12
gastroenterology
Metrics
H-Index
i10 Index
Citation
58
122
13,074
* Rankings
Ranking Based
On Selection: 13
Gastroenterology
probiotics
animal models
Metrics
H-Index
i10 Index
Citation
56
159
8,950
health psychology
gastro-psychology
inflammatory bowel disease
endometriosis
Metrics
H-Index
i10 Index
Citation
52
125
9,225
Visceral Pain
Gut Brain Axis
Visceral hypersensitivity
Sensory Neurons
irritable bowel syndrome
Metrics
H-Index
i10 Index
Citation
51
104
9,394
Gastroenterology
History of Medicine
Metrics
H-Index
i10 Index
Citation
51
123
10,951
* Rankings
Ranking Based
On Selection: 17
gastroenterology
Metrics
H-Index
i10 Index
Citation
45
88
8,113
* Rankings
Ranking Based
On Selection: 18
Gastroenterology
Metrics
H-Index
i10 Index
Citation
43
94
8,753
* Rankings
Ranking Based
On Selection: 19
Hepatology
Gastroenterology
Immunology
Genetics
Metrics
H-Index
i10 Index
Citation
40
87
8,552
Colorectal cancer screening
gastroenterology
familial cancer
Metrics
H-Index
i10 Index
Citation
40
63
5,750
* Rankings
Ranking Based
On Selection: 21
Psychogastroenterology
Metrics
H-Index
i10 Index
Citation
39
83
5,876
garointestinal and smooth muscle physiology
Metrics
H-Index
i10 Index
Citation
37
88
5,306
* Rankings
Ranking Based
On Selection: 23
Nutrition and Gastroenterology of Companion Animals
Metrics
H-Index
i10 Index
Citation
31
61
3,268
* Rankings
Ranking Based
On Selection: 24
Hepatology
Metrics
H-Index
i10 Index
Citation
31
54
2,851
* Rankings
Ranking Based
On Selection: 25
Gastrointestinal and lung cancers
Metrics
H-Index
i10 Index
Citation
29
62
7,663
* Rankings
Ranking Based
On Selection: 26
Gastroenterology
nervous system
immune system
Metrics
H-Index
i10 Index
Citation
29
43
4,387
* Rankings
Ranking Based
On Selection: 27
Hepatology
Cell Biology
metabolism
liver disease
Metrics
H-Index
i10 Index
Citation
28
39
3,684
* Rankings
Ranking Based
On Selection: 28
Inflammatory Bowel Diseases
Gastroenterology
Metrics
H-Index
i10 Index
Citation
28
51
3,016
* Rankings
Ranking Based
On Selection: 29
Gastroenterology
Inflammatory Bowel Disease
Gastrointestinal Microbiota
Faecal Microbiota Transplantation
Metrics
H-Index
i10 Index
Citation
27
41
4,710
* Rankings
Ranking Based
On Selection: 30
Department of Gastroenterology Hepatology
Metrics
H-Index
i10 Index
Citation
27
38
4,012
* Rankings
Ranking Based
On Selection: 31
gastroenterology
inflammatory bowel disease
Crohn's disease
ulcerative colitis
Metrics
H-Index
i10 Index
Citation
27
42
8,997
* Rankings
Ranking Based
On Selection: 32
Gastroenterology and Hepatology
Metrics
H-Index
i10 Index
Citation
25
37
2,159
* Rankings
Ranking Based
On Selection: 33
Ulcerative colitis
irritable bowel syndrome
diet
fibre
protein
Metrics
H-Index
i10 Index
Citation
25
38
2,920
* Rankings
Ranking Based
On Selection: 34
Neurogastroenterology
visceral innervation
pacemaking mechanisms
Metrics
H-Index
i10 Index
Citation
25
31
2,437
* Rankings
Ranking Based
On Selection: 35
Gastroenterology
breath analysis
cancer
volatile organic compounds
stable isotopes
Metrics
H-Index
i10 Index
Citation
24
32
3,473
* Rankings
Ranking Based
On Selection: 36
Neurogastroenterology
Enteric Neuropathy
Parkinson's Disease
Gastrointestinal Dysfunction
Metrics
H-Index
i10 Index
Citation
22
29
1,398
* Rankings
Ranking Based
On Selection: 37
gastroenterology
Metrics
H-Index
i10 Index
Citation
22
29
2,693
* Rankings
Ranking Based
On Selection: 38
Gastroenterology
Inflammatory Bowel Disease
Bowel Cancer Screening
Therapeutic Endoscopy
Metrics
H-Index
i10 Index
Citation
21
25
1,666
* Rankings
Ranking Based
On Selection: 39
Gastroenterology
Metrics
H-Index
i10 Index
Citation
21
31
1,327
* Rankings
Ranking Based
On Selection: 40
Inflammatory Bowel Disease
Gastroenterology
Metrics
H-Index
i10 Index
Citation
20
22
2,339
* Rankings
Ranking Based
On Selection: 41
Inflammatory Bowel Diseases
Hepatology
Appendicitis
Gastrointestinal Immunology
Metrics
H-Index
i10 Index
Citation
20
30
14,873
* Rankings
Ranking Based
On Selection: 42
Neurogastroenterology
gut hormones
serotonin
metabolism
microbiome-host interactions
Metrics
H-Index
i10 Index
Citation
19
23
2,161
* Rankings
Ranking Based
On Selection: 43
sports nutrition
dietetics
nutrition
exercise physiology
female athletes
Metrics
H-Index
i10 Index
Citation
18
24
1,951
* Rankings
Ranking Based
On Selection: 44
EMR
ESD
ERCP
Interventional EUS
POEM
Metrics
H-Index
i10 Index
Citation
18
24
1,519
* Rankings
Ranking Based
On Selection: 45
Epidemiology
Gastroenterology
Liver disease
Metrics
H-Index
i10 Index
Citation
18
24
2,499
* Rankings
Ranking Based
On Selection: 46
Gastroenterology IBD Nutraceuticals
Metrics
H-Index
i10 Index
Citation
16
24
898
* Rankings
Ranking Based
On Selection: 47
Clinical Trials
Oncology
Neuroscience
Mental Health
Gut Function
Metrics
H-Index
i10 Index
Citation
15
20
890
* Rankings
Ranking Based
On Selection: 48
Gastroenterology
Nutrition
Gastric vagal afferent
obesity
functional dyspepsia
Metrics
H-Index
i10 Index
Citation
15
19
808
* Rankings
Ranking Based
On Selection: 49
Inflammatory Bowel Disease
Mucosal Immunology
Regulatory T cell Therapy
Metrics
H-Index
i10 Index
Citation
13
16
930
* Rankings
Ranking Based
On Selection: 50
stem cell biology
hepatology
developmental biology
germ cell
Metrics
H-Index
i10 Index
Citation
9
9
1,070
* Rankings
Ranking Based
On Selection: 51
Nutrition and Dietetics
Paediatrics
Gastroenterology
Maternal Health
Women's Health
Metrics
H-Index
i10 Index
Citation
9
9
576
* Rankings
Ranking Based
On Selection: 52
Metrics
H-Index
i10 Index
Citation
8
8
862
* Rankings
Ranking Based
On Selection: 53
Gastroenterology
Tropical Medicine
Medical Education
Metrics
H-Index
i10 Index
Citation
7
7
218
* Rankings
Ranking Based
On Selection: 54
Gastroenterology
Paediatrics & Adolescent Health
Mental Health
Integrative Medicine & Lifestyle Medicine
Metrics
H-Index
i10 Index
Citation
6
6
489
* Rankings
Ranking Based
On Selection: 55
Gastroenterology
Hepatology
Artificial Intelligence
Metrics
H-Index
i10 Index
Citation
4
4
57
* Rankings
Ranking Based
On Selection: 56
Gastroenterology
Metrics
H-Index
i10 Index
Citation
4
3
95
* Rankings
Ranking Based
On Selection: 57
Gastroenterology
Metrics
H-Index
i10 Index
Citation
2
2
31
Nicholas Talley
University of Newcastle
Callaghan, Australia
Metrics
H-Index
i10 Index
Citation Counts
201
1,030
152,838
Gastroenterology
Hepatology
Michael Kamm
University of Melbourne
Melbourne, Australia
Metrics
H-Index
i10 Index
Citation Counts
156
519
83,381
Gerald Holtmann
University of Queensland
St Lucia, Australia
Metrics
H-Index
i10 Index
Citation Counts
83
265
27,261
Gastroenterology
Hepatology
Microbiome
Health Service Innovation
John Zalcberg
Monash University
Clayton, Australia
Metrics
H-Index
i10 Index
Citation Counts
81
308
39,439
Gastrointestinal cancer
clinical trials
Stuart K Roberts
Monash University
Clayton, Australia
Metrics
H-Index
i10 Index
Citation Counts
70
247
27,457
hepatology
gastroenterology
John Olynyk
Curtin University
Bentley, Australia
Metrics
H-Index
i10 Index
Citation Counts
70
212
18,768
Alex Boussioutas
Peter Maccallum Cancer Centre
Melbourne, Australia
Metrics
H-Index
i10 Index
Citation Counts
69
115
47,200
Gastroenterology
Gastrointestinal Oncology
Screening
Surveillance
Prevention
Rupert Leong
Metrics
H-Index
i10 Index
Citation Counts
68
201
18,507
Gastroenterology Inflammatory bowel diseases
Robert Fraser
Flinders University
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
68
170
12,751
Krish Ragunath
Curtin University
Bentley, Australia
Metrics
H-Index
i10 Index
Citation Counts
66
154
17,978
Barretts Oesophagus
Advanced Endoscopy
Maximize your institution's potential with our 360° Institutional Analysis Subscription and Institutional Exclusive Package, offering comprehensive insights and strategic advantages.
Max Petrov
University of Auckland
Auckland, New Zealand
Metrics
H-Index
i10 Index
Citation Counts
65
191
15,922
Pancreas
Pancreatitis
Metabolism
Gastroenterology
Epidemiology
Ian Cook
Metrics
H-Index
i10 Index
Citation Counts
58
122
13,074
Gordon Howarth
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
56
159
8,950
Gastroenterology
probiotics
animal models
Antonina Mikocka Walus
Deakin University
Geelong, Australia
Metrics
H-Index
i10 Index
Citation Counts
52
125
9,225
health psychology
gastro-psychology
inflammatory bowel disease
endometriosis
Stuart M Brierley
Flinders University
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
51
104
9,394
Visceral Pain
Gut Brain Axis
Visceral hypersensitivity
Sensory Neurons
irritable bowel syndrome
Neville Yeomans
Western Sydney University
Penrith, Australia
Metrics
H-Index
i10 Index
Citation Counts
51
123
10,951
Gastroenterology
History of Medicine
Peter Katelaris
University of Sydney
Sydney, Australia
Metrics
H-Index
i10 Index
Citation Counts
45
88
8,113
Ian Roberts Thomson
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
43
94
8,753
Golo Ahlenstiel
Western Sydney University
Penrith, Australia
Metrics
H-Index
i10 Index
Citation Counts
40
87
8,552
Hepatology
Gastroenterology
Immunology
Genetics
D James B St John
Cancer Council Victoria
Melbourne, Australia
Metrics
H-Index
i10 Index
Citation Counts
40
63
5,750
Colorectal cancer screening
gastroenterology
familial cancer
Simon R Knowles
Swinburne University of Technology
Hawthorn, Australia
Metrics
H-Index
i10 Index
Citation Counts
39
83
5,876
Roger Lentle
Massey University
Palmerston North, New Zealand
Metrics
H-Index
i10 Index
Citation Counts
37
88
5,306
garointestinal and smooth muscle physiology
Nick Cave
Massey University
Palmerston North, New Zealand
Metrics
H-Index
i10 Index
Citation Counts
31
61
3,268
Nutrition and Gastroenterology of Companion Animals
PJ Clark
University of Queensland
St Lucia, Australia
Metrics
H-Index
i10 Index
Citation Counts
31
54
2,851
Rachel Wong
Monash University
Clayton, Australia
Metrics
H-Index
i10 Index
Citation Counts
29
62
7,663
Gastrointestinal and lung cancers
Patrick A Hughes
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
29
43
4,387
Gastroenterology
nervous system
immune system
Manuel Fernandez Rojo
Metrics
H-Index
i10 Index
Citation Counts
28
39
3,684
Hepatology
Cell Biology
metabolism
liver disease
Daniel Van Langenberg
Monash University
Clayton, Australia
Metrics
H-Index
i10 Index
Citation Counts
28
51
3,016
Inflammatory Bowel Diseases
Gastroenterology
Sudarshan Paramsothy
University of Sydney
Sydney, Australia
Metrics
H-Index
i10 Index
Citation Counts
27
41
4,710
Gastroenterology
Inflammatory Bowel Disease
Gastrointestinal Microbiota
Faecal Microbiota Transplantation
David van der Poorten
University of Sydney
Sydney, Australia
Metrics
H-Index
i10 Index
Citation Counts
27
38
4,012
Department of Gastroenterology Hepatology
Michael Schultz
University of Otago
North Dunedin, New Zealand
Metrics
H-Index
i10 Index
Citation Counts
27
42
8,997
gastroenterology
inflammatory bowel disease
Crohn's disease
ulcerative colitis
Ayesha Shah
University of Queensland
St Lucia, Australia
Metrics
H-Index
i10 Index
Citation Counts
25
37
2,159
Gastroenterology and Hepatology
Ulcerative colitis
irritable bowel syndrome
diet
fibre
protein
Elizabeth Beckett
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
25
31
2,437
Neurogastroenterology
visceral innervation
pacemaking mechanisms
Roger Yazbeck
Flinders University
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
24
32
3,473
Gastroenterology
breath analysis
cancer
volatile organic compounds
stable isotopes
Rachel Mcquade
University of Melbourne
Melbourne, Australia
Metrics
H-Index
i10 Index
Citation Counts
22
29
1,398
Neurogastroenterology
Enteric Neuropathy
Parkinson's Disease
Gastrointestinal Dysfunction
Hamish Philpott
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
22
29
2,693
Viraj Chandana Kariyawasam
Western Sydney University
Penrith, Australia
Metrics
H-Index
i10 Index
Citation Counts
21
25
1,666
Gastroenterology
Inflammatory Bowel Disease
Bowel Cancer Screening
Therapeutic Endoscopy
George Alex
Royal Children's Hospital Melbourne
Parkville, Australia
Metrics
H-Index
i10 Index
Citation Counts
21
31
1,327
Ray Kiran Boyapati
Monash University
Clayton, Australia
Metrics
H-Index
i10 Index
Citation Counts
20
22
2,339
Inflammatory Bowel Disease
Gastroenterology
Rajkumar Cheluvappa
University of Canberra
Canberra, Australia
Metrics
H-Index
i10 Index
Citation Counts
20
30
14,873
Inflammatory Bowel Diseases
Hepatology
Appendicitis
Gastrointestinal Immunology
Alyce Martin
Flinders University
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
19
23
2,161
Neurogastroenterology
gut hormones
serotonin
metabolism
microbiome-host interactions
Rhiannon Snipe
Deakin University
Geelong, Australia
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,951
sports nutrition
dietetics
nutrition
exercise physiology
female athletes
Sunil Gupta
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,519
EMR
ESD
ERCP
Interventional EUS
POEM
Suzanne E Mahady
Monash University
Clayton, Australia
Metrics
H-Index
i10 Index
Citation Counts
18
24
2,499
Epidemiology
Gastroenterology
Liver disease
Suzanne Mashtoub
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
16
24
898
Gastroenterology IBD Nutraceuticals
Maryam Hajishafiee
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
15
20
890
Clinical Trials
Oncology
Neuroscience
Mental Health
Gut Function
Hui Li
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
15
19
808
Gastroenterology
Nutrition
Gastric vagal afferent
obesity
functional dyspepsia
Rimma Goldberg
Monash University
Clayton, Australia
Metrics
H-Index
i10 Index
Citation Counts
13
16
930
Inflammatory Bowel Disease
Mucosal Immunology
Regulatory T cell Therapy
Sarah Withey
University of Queensland
St Lucia, Australia
Metrics
H-Index
i10 Index
Citation Counts
9
9
1,070
stem cell biology
hepatology
developmental biology
germ cell
Marina Iacovou
Hudson Institute of Medical Research
Melbourne, Australia
Metrics
H-Index
i10 Index
Citation Counts
9
9
576
Nutrition and Dietetics
Paediatrics
Gastroenterology
Maternal Health
Women's Health
Tim Walker
University of Newcastle
Callaghan, Australia
Metrics
H-Index
i10 Index
Citation Counts
7
7
218
Gastroenterology
Tropical Medicine
Medical Education
Gastroenterology
Paediatrics & Adolescent Health
Mental Health
Integrative Medicine & Lifestyle Medicine
Jin Lin Tan
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10 Index
Citation Counts
4
4
57
Gastroenterology
Hepatology
Artificial Intelligence
Harrison Hamblin
University of Notre Dame Australia
Fremantle, Australia
Metrics
H-Index
i10 Index
Citation Counts
4
3
95