Amitabh Chak, MD
Enriched profileProfessor of Medicine and Oncology at Case Western Reserve University School of Medicine; Brenda and Marshall B. Brown Master Clinician in Innovation and Discovery at University Hospitals Cleveland Medical Center · University Hospitals Cleveland Medical Center
Amitabh Chak is Professor of Medicine and Oncology at Case Western Reserve University School of Medicine; Brenda and Marshall B. Brown Master Clinician in Innovation and Discovery at University Hospitals Cleveland Medical Center at University Hospitals Cleveland Medical Center. OpenAlex indexes 813 publications with 20,997 citations (h-index 75); ClinicalTrials.gov lists 10 registered studies with this person as an investigator. By OpenAlex citation count, this profile ranks in the top 5% of Gastroenterology profiles in the findmyKOL directory.
Data verified 18 Oct 2026
Overview
Updated 18 Oct 2026
Amitabh Chak, MD, is Professor of Medicine and Oncology at Case Western Reserve University School of Medicine at University Hospitals Cleveland Medical Center / Case Western Reserve University School of Medicine. The public record shows 813 publications with 20,997 citations (h-index 75), centered on Esophageal Cancer Research and Treatment, Gastric Cancer Management and Outcomes, Esophageal and GI Pathology. It also documents an investigator role on 10 registered clinical trials, industry payments reported by 10 companies, 14 NIH-funded awards (1998–2026).
- Most recent indexed publication: 2026 · Cancer epidemiology, biomarkers & prevention
- Top research focus: Esophageal Cancer Research and Treatment
- 10 registered trials on ClinicalTrials.gov
- Open Payments reporting from 10 companies
Generated from the cited public record · current as of 18 Oct 2026. Every fact links its source below.
Indications focus
from trials led + research topicsResearch focus
OpenAlex concept fingerprintDrugs & molecules
across trials, industry payments and publicationsWorks with
trial sponsors and companies reporting paymentsScholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID; 15 in PubMed.
Total citations across indexed works.
Hirsch index (OpenAlex). i10-index 254.
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
Telephone
Practice address and telephone from the federal NPPES registry.
Sign in to view contact details →Clinical trials
Updated 18 Oct 2026
Listed as an investigator on 10 registered studies on ClinicalTrials.gov. The most recent:
- Itraconazole in Combination With Ablation for the Prevention of Esophageal Cancer in Patients With High-risk Barrett's Esophagus
Sponsor: National Cancer Institute (NCI)
- Multi-Site Detection of Barrett's Esophagus in Patients Without Chronic GERD Symptoms
Sponsor: Case Comprehensive Cancer Center
- Surveillance vs. Endoscopic Therapy for Barrett's Esophagus With Low-grade Dysplasia
Sponsor: University of Colorado, Denver
Industry payments
Updated 18 Oct 2026
10 companies reported payments to CMS in program years 2021–2025. These are public disclosures, not judgments. The latest:
- Lucid Diagnostics Inc.Program year20255 payments
- Micro-tech Endoscopy USA, Inc.Program year20251 payment
- Olympus America Inc.Program year20251 payment
Medicare prescribing footprint (2024)
The drugs this prescriber writes for Medicare patients, grouped by drug class and therapeutic area. Every percentage is a share of their total prescribing, so you can see what they prescribe most. These are proportions, not patient counts or dollar amounts. No condition is inferred: the claims record what was prescribed, never why.
Metabolism & gastrointestinal
100%Proton pump inhibitor83.3%Omeprazole41%Pantoprazole Sodium41%Esomeprazole Magnesium18%Part D<11 patientsAntidiarrheal microorganisms16.7%Creon100%Part D<11 patients
Drug classes come from the WHO ATC and U.S. National Library of Medicine (RxClass) classifications; prescribing counts come from the CMS Medicare Part D Prescribers file. Each drug is counted once, under its primary class. Medicare fee-for-service only, so no Medicare Advantage, commercial, or pediatric prescribing is included. CMS publishes this data about 17 months after the fact.
NIH funding
Updated 18 Oct 2026
14 NIH research awards on record, funded 1998–2026 per NIH RePORTER. The latest:
- Pathways of Injury and Repair in Barrett's Carcinogenesis
Case Western Reserve University
FY2026$2,223,121P01CA269019 - A Clinical Trial of Cancer Prevention by Biomarker Based Detections of Barrett's Esophagus and Its Progression
Case Western Reserve University
FY2026$1,556,494R01CA295877 - Validation of Biomarkers for predicting Barrett's esophagus that will or will not: i) progress towards cancer, or ii) recur after ablation
Case Western Reserve University
FY2026$1,040,932U01CA271867
Congress activity
Updated 18 Oct 2026
5 congress contributions (2011–2025) across AACR, ASCO, ASH per OpenAlex. The most recent:
- Anticoagulation Increases Bleeding Rates in Portal Vein Thrombosis: A National Database Study
ASH Annual Meeting
ASH2019Co-author - Abstract 2780: Genome-wide methylation analysis reveals methylator subtypes of Barrett's esophagus and esophageal adenocarcinoma
AACR (meeting unresolved)
AACR2016Co-author
Published abstracts are attributed via the same ORCID-disambiguated authorship as publications, so each is DOI-verified. Podium roles (invited talks, session chairs) and oral/poster type are added as program data is confirmed.
Publications
Updated 18 Oct 2026
Their five most recent publications, matched to their ORCID record and linked to PubMed.
- INCREASED PREVALENCE OF PANCREATIC CYSTS IN NONSECRETOR (FUT2 NULL) INDIVIDUALS UNDER PANCREATIC SURVEILLANCE.
Cancer epidemiology, biomarkers & prevention
Article2026 - VSIG10L is a major determinant of esophageal homeostasis and inherited predisposition to Barrett's esophagus.
Nature communications
Article2026 - Nonendoscopic Detection of Barrett's Esophagus on Patients Without Gastroesophageal Reflux Disease Symptoms.
The American journal of gastroenterology
Article2026 - Technical Factors Associated With the Benefit of Prophylactic Pancreatic Stent Placement During High-Risk Endoscopic Retrograde Cholangiopancreatography: A Secondary Analysis of the SVI Trial Data Set.
The American journal of gastroenterology
Clinical Trial2025
Most-cited works
by citation count (OpenAlex)- 01Radiofrequency Ablation in Barrett's Esophagus with DysplasiaArticle1,441 citations2009
- 02
- 03A Randomized Trial of Rectal Indomethacin to Prevent Post-ERCP PancreatitisArticle744 citations2012
- 04Quality indicators for colonoscopyArticle493 citations2006
- 05Durability of Radiofrequency Ablation in Barrett's Esophagus With DysplasiaArticle451 citations2011
Network
Updated 18 Oct 2026
The people this person publishes with most, by number of co-authored papers. Names link to their own profile when we have one.
Online presence
Updated 18 Oct 2026
This person's own public accounts first, then places where others mention them. Two different things, listed separately.
Owned accounts
public accounts run by this person- Doximity
doximity.com/pub/amitabh-chak-md
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →doximity.com ↗ - Other
endoscopyonair.com/members/amitabh-chak
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →endoscopyonair.com ↗ - Other
jove.com/author/10041/amitabh-chak
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →jove.com ↗
Mentions by others
where others cite or feature them- Other
case.edu/medicine/dhri/about/primary-faculty/amitabh-chak
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →case.edu ↗ - Other
asge.org/about-asge/newsroom/news-list/2025/05/05/new-president-to-lead-asge-forward--amitabh-chak--md--masge
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →asge.org ↗ - Other
uhhospitals.org/find-a-doctor/chak-amitabh-233
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →uhhospitals.org ↗
We list an account only when the public record ties it to this person. verified means we've confirmed the match in more than one place; provisional means it looks right but we're still confirming.
Background & recognition
Updated 18 Oct 2026
Credentials, appointments and honors, newest first, each linked to the public source it came from.
Education
degrees and training on record- verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →uhhospitals.org ↗
- verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →uhhospitals.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →asge.org ↗
Editorial & leadership roles
journal and society appointments- verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →asge.org ↗
- Senior and Associate Editor
Gastrointestinal Endoscopy (9 years)
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →asge.org ↗ - Chair
CME and GIE Editorial Board committees, American Society for Gastrointestinal Endoscopy
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →asge.org ↗ - Member
ASGE Governing Board
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →asge.org ↗ - Member
ASGE Foundation
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →asge.org ↗
Awards & honors
honors on the public record- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →uhhospitals.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →uhhospitals.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →uhhospitals.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →uhhospitals.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →asge.org ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →asge.org ↗
Secondary affiliations
appointments beyond the home institution- Member
Cancer Genomics and Epigenomics Program, Case Comprehensive Cancer Center
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →case.edu ↗ - Contact Principal Investigator
BETRNet (Barrett's Esophagus Translational Research Network)
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →case.edu ↗ - Program Director
Michael V. Sivak, Jr, Advanced Endoscopy Fellowship
verifiedCorroborated by findmyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →uhhospitals.org ↗
Media & interviews
press, podcasts and appearances- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →jove.com ↗
- Podcast appearance on The Gut Doctor podcast
episode 'Innovation and Entrepreneurship with Amitabh Chak, MD'
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →thegutdoctor.buzzsprout.com ↗
Every item links to where we found it. verified means we've confirmed it in more than one place; provisional means we found it and are still confirming.
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