Jaquelyn Fleckenstein is a Gastroenterology physician affiliated with Washington University in St. Louis. OpenAlex indexes 40 publications with 1,128 citations (h-index 13).
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
4921 Parkview Pl
Div Im Gastroenterology, Ste 12b
Saint Louis, MO 631101032
Telephone
314-747-2066Registry record last updated 17 Apr 2025.
Industry payments
1 company reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Gilead Sciences, Inc.Program year20251 payment
- Gilead Sciences, Inc.Program year20241 payment
- Gilead Sciences, Inc.Program year20231 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
41.5%Bile Acid18.9%Ursodiol100%Part D≥40 patientsProton pump inhibitor7.1%Omeprazole69%Pantoprazole Sodium31%Part D≥15 patients+ 4 more classes in this area
Cardiovascular
29%Loop diuretic10.6%Furosemide100%Part D≥28 patientsAldosterone antagonist (MRA)10.6%Spironolactone100%Part D≥40 patients+ 2 more classes in this area
Cancer & immunology
19.8%Calcineurin inhibitor15.5%Tacrolimus80%Envarsus Xr20%Part D<11 patientsNucleoside Metabolic Inhibitor2.7%Mercaptopurine100%Part D<11 patients+ 1 more class in this area
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.
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.”