Nizar Zein is a Gastroenterology physician affiliated with Cleveland Clinic. OpenAlex indexes 314 publications with 13,170 citations (h-index 52); ClinicalTrials.gov lists 1 registered study matched to this name. By OpenAlex citation count, this profile ranks in the top 10% of Gastroenterology profiles in the findmyKOL directory.
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
6000 W Creek Rd
Suite 10
Independence, OH 441312139
Telephone
800-223-2273Registry record last updated 4 Feb 2008.
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
4 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Madrigal PharmaceuticalsProgram year20251 payment
- ABBVIE INC.Program year20251 payment
- COLOPLAST CORPProgram year20251 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.
- Prevalence of Nonalcoholic Steatohepatitis-Associated Cirrhosis in the United States: An Analysis of National Health and Nutrition Examination Survey Data
The American Journal of Gastroenterology
2017 - Increasing Burden of Chronic Liver Disease Among Adolescents and Young Adults in the USA: A Silent Epidemic
Digestive Diseases and Sciences
2017
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Gene Barnett, MD
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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.”