John Sarantopoulos, MD
Basic profileAssistant professor of medicine, Division of Hematology-Oncology, UT Health San Antonio · Medical Oncology
John Sarantopoulos is Assistant professor of medicine, Division of Hematology-Oncology, UT Health San Antonio. ClinicalTrials.gov lists 8 registered studies matched to this name.
Overview
Updated 27 Oct 2026
John Sarantopoulos, M.D., is Assistant professor of medicine, Division of Hematology-Oncology, UT Health San Antonio. It also documents an investigator role on 10 registered clinical trials, industry payments reported by 18 companies, 3 NIH-funded awards (2008–2026).
- Top research focus: Lymphoma
- 10 registered trials on ClinicalTrials.gov
- Open Payments reporting from 18 companies
Generated from the cited public record · current as of 27 Oct 2026. Every fact links its source below.
Indications focus
from trials led + research topicsResearch focus
OpenAlex concept fingerprintDrugs & molecules
across trials, industry payments and publicationsWorks with
trial sponsors and companies reporting paymentsScholarship
indexed output and impact (OpenAlex)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
Telephone
Practice address and telephone from the federal NPPES registry.
Sign in to view contact details →Clinical trials
Updated 27 Oct 2026
Listed as an investigator on 8 registered studies on ClinicalTrials.gov. The most recent:
- Safety Study of Camptothecin-20-O-Propionate Hydrate (CZ48)
Sponsor: Cao Pharmaceuticals Inc.
InvestigatorPhase 1UnknownNCT02575638 - XL999 Administered Intravenously to a Subject With Advanced Malignancies
Sponsor: John Sarantopoulos
Industry payments
Updated 27 Oct 2026
18 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- PFIZER INC.Program year202533 payments$33,685openpaymentsdata.cms.gov ↗
- Exelixis Inc.Program year202524 payments$17,135openpaymentsdata.cms.gov ↗
- Regeneron Healthcare Solutions, Inc.Program year20255 payments
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.
Cancer & immunology
56%PD-1 inhibitor55.1%Pembrolizumab100%Part B, office-administered≥24 patientsCytochrome P450 17A1 Inhibitor0.5%Abiraterone Acetate100%Part D≥16 patients+ 2 more classes in this area
Metabolism & gastrointestinal
26.2%Other antiemetics19.3%Fosaprepitant100%Part B, office-administered≥15 patientsSerotonin-3 Receptor Antagonist5.5%Ondansetron hydrochloride66%Palonosetron hcl32%Ondansetron Hcl2%Part D + Part B<11 patients+ 3 more classes in this area
Musculoskeletal
11.3%RANK Ligand Inhibitor10.9%Denosumab100%Part B, office-administered≥15 patientsBisphosphonate0.4%Zoledronic acid100%Part B, office-administered≥13 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
Updated 27 Oct 2026
3 NIH research awards on record, funded 2008–2026 per NIH RePORTER. The latest:
- Texas EXperimental Cancer Therapeutics Network - TEX CTN
University of Tx Md Anderson Can Ctr
FY2026$1,519,430UM1CA186688 - Texas EXperimental Cancer Therapeutics Network - TEX CTN
University of Tx Md Anderson Can Ctr
FY2025$1,679,285UM1CA186688 - Texas EXperimental Cancer Therapeutics Network - TEX CTN
University of Tx Md Anderson Can Ctr
FY2024$1,679,285UM1CA186688
Online presence
Updated 27 Oct 2026
This person's own public accounts first, then places where others mention them. Two different things, listed separately.
Owned accounts
public accounts run by this person- Doximity
doximity.com/pub/john-sarantopoulos-md
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →doximity.com ↗
Mentions by others
where others cite or feature them- Other
providers.uthscsa.edu/providers/john-sarantopoulos-1861495343
verifiedCorroborated by FindMyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →providers.uthscsa.edu ↗
We list an account only when the public record ties it to this person. verified means we've confirmed the match in more than one place; provisional means it looks right but we're still confirming.
Background & recognition
Updated 27 Oct 2026
Credentials, appointments and honors, newest first, each linked to the public source it came from.
Education
degrees and training on record- verifiedCorroborated by FindMyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →providers.uthscsa.edu ↗
- verifiedCorroborated by FindMyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →providers.uthscsa.edu ↗
Editorial & leadership roles
journal and society appointments- Member
early therapeutics and genitourinary committees, Southwest Oncology Group
verifiedCorroborated by FindMyKOL. We matched this record across two or more independent public sources (or a verified ORCID / NPI identifier bridge) before attributing it to this person.How we verify →providers.uthscsa.edu ↗
Every item links to where we found it. verified means we've confirmed it in more than one place; provisional means we found it and are still confirming.
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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.”