Gregory Freeman is a Cardiology physician. OpenAlex indexes 112 publications with 6,693 citations (h-index 40); ClinicalTrials.gov lists 1 registered study matched to this name.
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
4306 De Zavala Rd Bldg 1
San Antonio, TX 782494590
Telephone
210-450-6720Provider last certified this registry record 25 Sept 2025.
Clinical trials
- Asthma in a Decentralized Patient Population: Is Traditional Disease Management Enough?
Sponsor: The University of Texas Health Science Center at San Antonio
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.
Industry payments
10 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- PFIZER INC.Program year20251 payment
- PFIZER INC.Program year20241 payment
- Novartis Pharmaceuticals CorporationProgram year20242 payments
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
80%Statin27.6%Rosuvastatin Calcium58%Atorvastatin Calcium43%Part D<11 patientsBeta blocker27.6%Metoprolol Succinate55%Carvedilol45%Part D<11 patients+ 2 more classes in this area
Blood & clotting
20%Factor Xa inhibitor12.4%Eliquis100%Part D<11 patientsP2Y12 inhibitor7.6%Brilinta100%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.
- Carotid atherosclerosis predicts incident acute coronary syndromes in rheumatoid arthritis
Arthritis & Rheumatism
2011 - Pulse Wave Analysis of the Aortic Pressure Waveform in Severe Left Ventricular Systolic Dysfunction
Circulation Heart Failure
2009 - Wnt-induced secreted protein-1 is a prohypertrophic and profibrotic growth factor
American Journal of Physiology-Heart and Circulatory Physiology
2007 - Interleukin-18 knockout mice display maladaptive cardiac hypertrophy in response to pressure overload
Biochemical and Biophysical Research Communications
2007
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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.”