Sarah Umar is a Gastroenterology physician affiliated with Mayo Clinic in Arizona. OpenAlex indexes 90 publications with 1,331 citations (h-index 17); ClinicalTrials.gov lists 2 registered studies matched to this name.
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 fundingClinical trials
- HyGIeaCare Procedure for Chronic Constipation
Sponsor: HyGIeaCare, Inc.
- HyGIeaCare Prep vs Split-dose PEG Prep Prior to Colonoscopy
Sponsor: HyGIeaCare, Inc.
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.
Medicare prescribing footprint (2023)
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
83.9%Proton pump inhibitor47.7%Pantoprazole Sodium66%Omeprazole34%Part D<11 patientsGuanylate Cyclase-C Agonist16.1%Linzess100%Part D<11 patients+ 2 more classes in this area
Cardiovascular
16.1%Bile Acid Sequestrant16.1%Colesevelam Hcl100%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.
- Flow cytometric detection of clonal T-cell populations in CAR T-cell therapy related enteropathy
Leukemia & lymphoma/Leukemia and lymphoma
2025 - S6120 Persistent Diarrhea Following CAR-T Therapy for Multiple Myeloma: A Case of Immune Effector Cell-Associated Enterocolitis
The American Journal of Gastroenterology
2025
Similar KOLs
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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.”