Kelley Yan is a Gastroenterology physician affiliated with Columbia University Irving Medical Center. OpenAlex indexes 58 publications with 5,565 citations (h-index 25).
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 fundingMedicare 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
100%Proton pump inhibitor100%Pantoprazole Sodium100%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
6 NIH research awards on record, funded 2016–2026 per NIH RePORTER. The latest:
- Cytotoxic T cells and the epithelium in celiac disease
Columbia University Health Sciences
FY2026$821,018R01DK146472 - T helper cells and stem cells in colon homeostasis and tumor initiation
Columbia University Health Sciences
FY2026$715,501R01DK142438 - T helper cells and stem cells in colon homeostasis and tumor initiation
Columbia University Health Sciences
FY2025$715,501R01DK142438
Awards in the NIH RePORTER records where a principal investigator name matches this physician at an organization in their practice state. Latest award years shown; each row links to the project record on RePORTER.
Similar KOLs
Other experts from the same institution or the same specialty.
Stanley Fahn, MD
Columbia University Irving Medical Center
Rebecca Hahn, MD
Columbia University Irving Medical Center
Susheel Kodali, MD
Columbia University Irving Medical Center
Ronald Wapner, MD
Columbia University Irving Medical Center
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.”