Osama Altayar is a Gastroenterology physician affiliated with Washington University in St. Louis. OpenAlex indexes 90 publications with 4,601 citations (h-index 31).
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID.
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
1 Barnes Jewish Hospital Plz
Div Im Gastroenterology
Saint Louis, MO 631101003
Telephone
314-747-2066Registry record last updated 15 Apr 2025.
Industry payments
1 company reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Ambu Inc.Program year20211 payment
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
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
86.8%Proton pump inhibitor31.8%Omeprazole46%Pantoprazole Sodium26%Esomeprazole Magnesium16%Dexlansoprazole Dr12%Part D<11 patientsGuanylate Cyclase-C Agonist21.7%Linzess90%Trulance10%Part D<11 patients+ 5 more classes in this area
Nervous system
5.7%Tricyclic Antidepressant3.8%Nortriptyline Hcl100%Part D<11 patientsPhenothiazine1.9%Prochlorperazine Maleate100%Part D<11 patientsCardiovascular
5.4%Bile Acid Sequestrant5.4%Colestipol Hcl52%Cholestyramine48%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.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
- Clinical predictors of significant findings on EUS for the evaluation of incidental common bile duct dilation
Gastrointestinal Endoscopy
2024 - Simultaneous evaluation of the imprecision and inconsistency domains of GRADE can be performed using prediction intervals
Journal of Clinical Epidemiology
2024
Similar KOLs
Other experts from the same institution or the same specialty.
Timothy Ley, MD
Washington University in St. Louis
David Gutmann, MD
Washington University in St. Louis
Randall Bateman, MD
Washington University in St. Louis
Victoria Fraser, MD
Washington University in St. Louis
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.”