Gregary Marhefka is a Cardiology physician affiliated with Thomas Jefferson University Hospital. OpenAlex indexes 78 publications with 1,273 citations (h-index 19).
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
925 Chestnut St
Mezzanine Floor
Philadelphia, PA 191074216
Telephone
215-955-5050Registry record last updated 2 Apr 2015.
Industry payments
6 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- ABIOMEDProgram year20251 payment
- Medtronic, Inc.Program year20251 payment
- Amgen Inc.Program year20251 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.
Cardiovascular
78.4%Statin22.3%Atorvastatin Calcium46%Rosuvastatin Calcium38%Simvastatin11%Pravastatin Sodium5%Part D<11 patientsBeta blocker17.6%Metoprolol Succinate72%Carvedilol13%Metoprolol Tartrate10%Atenolol6%Part D<11 patients+ 13 more classes in this area
Blood & clotting
14.7%Factor Xa inhibitor9.7%Eliquis66%Xarelto34%Part D≥36 patientsP2Y12 inhibitor2.6%Clopidogrel100%Part D≥16 patients+ 1 more class in this area
Metabolism & gastrointestinal
5.4%SGLT2 inhibitor2%Farxiga57%Jardiance43%Part D<11 patientsPotassium supplement1.7%Potassium Chloride68%Klor-Con M2032%Part D<11 patients+ 2 more classes 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.
- From STEMI to saddle pulmonary embolism: Management challenges and the role of VA-ECMO
Global Cardiology Science and Practice
2026 - Incidence, risk factors and clinical outcomes of pericardial effusion in left ventricular assist device patients
World Journal of Cardiology
2025
Similar KOLs
Other experts from the same institution or the same specialty.
Jack Jallo, MD
Thomas Jefferson University Hospital
Mani Kavuru, MD
Thomas Jefferson University Hospital
Joseph Spiegel, MD
Thomas Jefferson University Hospital
Larami Mackenzie, MD
Thomas Jefferson University Hospital
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.”