John Birk is a Gastroenterology physician. ClinicalTrials.gov lists 1 registered study matched to this name.
Overview
Scholarship
indexed output and impact (OpenAlex)Research metrics aren't shown for this record. Either we found no confident publication match for this name, or more than one physician shares the matched author record. We'd rather show nothing than someone else's numbers. Why? →
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
263 Farmington Ave
Gastroenterology Associates
Farmington, CT 060300001
Telephone
860-679-3238Registry record last updated 28 Sept 2022.
Clinical trials
Registered studies on ClinicalTrials.gov where the overall official or a site investigator name-matches this physician, confirmed against known institution/geography. Latest few shown; the full list is part of the full profile.
Industry payments
7 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Vibrant Gastro, Inc.Program year20241 payment
- Gilead Sciences, Inc.Program year20241 payment
- ERBE USA IncProgram year20241 payment
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- Systemic Inflammation and the Inflammatory Context of the Colonic Microenvironment Are Improved by Urolithin A
Cancer Prevention Research
2025 - Differentiating Neonatal Dubin Johnson Syndrome from Biliary Atresia: Start Simply
Journal of Clinical and Translational Hepatology
2023
Similar KOLs
Other experts from the same institution or the same specialty.
No other directory profiles share this institution yet.
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The Rockefeller University
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Indiana University School of Medicine
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Icahn School of Medicine at Mount Sinai
Kris Kowdley, MD
Washington State University
A basic profile from our physician directory: identity and practice contact from the federal NPPES registry, research from OpenAlex, trials from ClinicalTrials.gov, payments from CMS Open Payments, shown itemized where we have matched records, as a count where we only have a total. This person hasn't been through our full identity-adjudication pipeline yet, so funding, congress activity and public presence aren't shown. Absence of a section means “not yet looked,” never “none found.”