Marc Simon, MD
Enriched profileEdward Fein and Pearl Landrith Professor of Cardiology, Director of Pulmonary Vascular Disease and UCSF Pulmonary Hypertension Center of Comprehensive Care, Program Director of UCSF Advanced Heart Failure & Transplant Cardiology Fellowship · University of California, San Francisco (UCSF)
Marc Simon is Edward Fein and Pearl Landrith Professor of Cardiology, Director of Pulmonary Vascular Disease and UCSF Pulmonary Hypertension Center of Comprehensive Care, Program Director of UCSF Advanced Heart Failure & Transplant Cardiology Fellowship at University of California, San Francisco (UCSF). OpenAlex indexes 380 publications with 9,172 citations (h-index 50); ClinicalTrials.gov lists 7 registered studies with this person as an investigator.
Data verified 17 Oct 2026
Overview
Updated 18 Oct 2026
Marc Simon, MD, is Edward Fein and Pearl Landrith Professor of Cardiology, Director of Pulmonary Vascular Disease and UCSF Pulmonary Hypertension Center of Comprehensive Care, Program Director of UCSF Advanced Heart Failure & Transplant Cardiology Fellowship at University of California, San Francisco (UCSF). The public record shows 380 publications with 9,172 citations (h-index 50), centered on Pulmonary Hypertension Research and Treatments, Cardiovascular Function and Risk Factors, Mechanical Circulatory Support Devices. It also documents an investigator role on 7 registered clinical trials, industry payments reported by 16 companies, 1 NIH-funded awards (2021–2022).
- Most recent indexed publication: 2024 · Circulation
- Top research focus: Pulmonary Hypertension Research and Treatments
- 7 registered trials on ClinicalTrials.gov
- Open Payments reporting from 16 companies
Generated from the cited public record · current as of 18 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)Distinct works indexed by OpenAlex, matched via ORCID; 7 in PubMed.
Total citations across indexed works.
Hirsch index (OpenAlex). i10-index 134.
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 18 Oct 2026
Listed as an investigator on 7 registered studies on ClinicalTrials.gov. The most recent:
- Oral CXA-10 in Pulmonary Arterial Hypertension
Sponsor: Gladwin, Mark, MD
- Pulmonary Hypertension Association Registry
Sponsor: Pulmonary Hypertension Association, Inc.
- Metformin for Pulmonary Hypertension HFpEF
Sponsor: University of California, San Francisco
Industry payments
Updated 18 Oct 2026
16 companies reported payments to CMS in program years 2021–2025. These are public disclosures, not judgments. The latest:
- Merck Sharp & Dohme LLCProgram year202523 payments$16,248openpaymentsdata.cms.gov ↗
- Actelion Pharmaceuticals US, Inc.Program year20255 payments
- Chiesi USA, Inc.Program year20253 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.
Cardiovascular
44.5%Endothelin Receptor Antagonist12.1%Opsumit74%Ambrisentan26%Part D<11 patientsAldosterone antagonist (MRA)10.8%Spironolactone100%Part D≥15 patients+ 5 more classes in this area
Blood & clotting
25%Prostacyclin Receptor Agonist13.9%Uptravi100%Part D<11 patientsProstacycline Vasodilator11.1%Tyvaso Dpi100%Part D<11 patientsMetabolism & gastrointestinal
11.6%SGLT2 inhibitor11.6%Jardiance100%Part D≥15 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 18 Oct 2026
1 NIH research award on record, funded 2021–2022 per NIH RePORTER. The latest:
- Phase II Trial of Metformin for Pulmonary Hypertension in Heart Failure with Preserved Ejection Fraction
University of California, San Francisco
FY2022$576,734R01AG058659 - Phase II Trial of Metformin for Pulmonary Hypertension in Heart Failure with Preserved Ejection Fraction
University of California, San Francisco
FY2021$657,956R01AG058659 - A Phase II Trial of Metformin for Pulmonary Hypertension in Heart Failure with Preserved Ejection Fraction
University of Pittsburgh at Pittsburgh
FY2020$664,604R01AG058659
Congress activity
Updated 18 Oct 2026
1 congress contribution (2018) across ASH per OpenAlex. The most recent:
- Impact of Total Metabolic Tumor Volume at Baseline in the Remarc Study
ASH Annual Meeting
ASH2018Co-author
Published abstracts are attributed via the same ORCID-disambiguated authorship as publications, so each is DOI-verified. Podium roles (invited talks, session chairs) and oral/poster type are added as program data is confirmed.
Publications
Updated 18 Oct 2026
Their five most recent publications, matched to their ORCID record and linked to PubMed.
- Exploring the Noninvasive Evaluation of the Pulmonary Pressure-Flow Relationship During Exercise.
Journal of the American Heart Association
Comment2024 - Plasma Proteomics Identifies B2M as a Regulator of Pulmonary Hypertension in Heart Failure With Preserved Ejection Fraction.
Arteriosclerosis, thrombosis, and vascular biology
Article2024 - Knowing All the Angles (on Right Ventricular Myocardial Remodeling).
Circulation. Heart failure
Comment2023 - Gender Differences in Mortality After Left Ventricular Assist Device Implant: A Causal Mediation Analysis Approach.
ASAIO journal (American Society for Artificial Internal Organs
Article2021
Most-cited works
by citation count (OpenAlex)Network
Updated 18 Oct 2026
The people this person publishes with most, by number of co-authored papers. Names link to their own profile when we have one.
Online presence
Updated 18 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/marc-simon-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 ↗
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 18 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 →ucsfhealthcardiology.ucsf.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 →ucsfhealthcardiology.ucsf.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 →ucsfhealthcardiology.ucsf.edu ↗
- Board Certified
Internal Medicine (American Board of Internal Medicine)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →hillphysicians.com ↗ - Board Certified
Cardiovascular Disease (American Board of Internal Medicine)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →hillphysicians.com ↗ - Board Certified
Advanced Heart Failure and Transplant Cardiology (American Board of Internal Medicine)
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →hillphysicians.com ↗
Editorial & leadership roles
journal and society appointments- Fellow
American College of Cardiology
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →aahfn.digitellinc.com ↗ - Fellow
American Heart Association
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →aahfn.digitellinc.com ↗ - Fellow
Society of Cardiac Angiography and Interventions
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →aahfn.digitellinc.com ↗ - Elected Member
American Society for Clinical Investigation
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →aahfn.digitellinc.com ↗ - Elected Member
Association of University Cardiologists
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →aahfn.digitellinc.com ↗ - Elected Member
Association of American Physicians
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →aahfn.digitellinc.com ↗
Awards & honors
honors on the public record- MERIT Award
National Heart, Lung, and Blood Institute
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →aahfn.digitellinc.com ↗
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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