Mark Sarnak, MD
Enriched profileChief, Division of Nephrology; Gerald J. and Dorothy R. Friedman Professor of Medicine · Tufts Medical Center
Mark Sarnak is Chief, Division of Nephrology; Gerald J. and Dorothy R. Friedman Professor of Medicine at Tufts Medical Center. OpenAlex indexes 533 publications with 52,113 citations (h-index 98); ClinicalTrials.gov lists 1 registered study with this person as an investigator. By OpenAlex citation count, this profile ranks in the top 1% of Nephrology profiles in the findmyKOL directory.
Data verified 14 Aug 2026
Overview
Updated 27 Aug 2026
Mark J. Sarnak, MD, is Chief, Division of Nephrology at Tufts Medical Center / Tufts University School of Medicine. The public record shows 533 publications with 52,113 citations (h-index 98), centered on Chronic Kidney Disease. It also documents an investigator role on 1 registered clinical trials, industry payments reported by 9 companies, 11 NIH-funded awards (2000–2026).
- Most recent indexed publication: 2022 · Journal of the American Society of Nephrology
- Top research focus: Chronic Kidney Disease
- 1 registered trials on ClinicalTrials.gov
- Open Payments reporting from 9 companies
Generated from the cited public record · current as of 27 Aug 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; 6 in PubMed.
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
Telephone
Practice address and telephone from the federal NPPES registry.
Sign in to view contact details →Clinical trials
Updated 27 Aug 2026
Listed as an investigator on 1 registered study on ClinicalTrials.gov. The most recent:
- Niacin and Endothelial Function in Early CKD
Sponsor: Tufts Medical Center
Industry payments
Updated 27 Aug 2026
9 companies reported payments to CMS in program years 2021–2025. These are public disclosures, not judgments. The latest:
- AstraZeneca UK LimitedProgram year20252 payments
- AKEBIA THERAPEUTICS INCProgram year20252 payments
- AstraZeneca Pharmaceuticals LPProgram year20251 payment
Medicare prescribing footprint (2023)
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.
Blood & clotting
100%Erythropoiesis-stimulating Agent100%Procrit100%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.
NIH funding
Updated 27 Aug 2026
11 NIH research awards on record, funded 2000–2026 per NIH RePORTER. The latest:
- Dimensions of Kidney Tubule Health and Atherosclerotic Cardiovascular Disease and Heart Failure in Middle-Aged and Older Adults
Tufts Medical Center
FY2026$626,483R01HL167233 - Dimensions of Kidney Tubule Health and Atherosclerotic Cardiovascular Disease and Heart Failure in Middle-Aged and Older Adults
Tufts Medical Center
FY2025$625,475R01HL167233 - Dimensions of Kidney Tubule Health and Atherosclerotic Cardiovascular Disease and Heart Failure in Middle-Aged and Older Adults
Tufts Medical Center
FY2024$680,241R01HL167233
Publications
Updated 27 Aug 2026
Their five most recent publications, matched to their ORCID record and linked to PubMed.
- Association of Proximal Tubular Secretory Clearance with Long-Term Decline in Cognitive Function.
Journal of the American Society of Nephrology
Article2022 - Association of Multiple Plasma Biomarker Concentrations with Progression of Prevalent Diabetic Kidney Disease: Findings from the Chronic Renal Insufficiency Cohort (CRIC) Study.
Journal of the American Society of Nephrology
Article2021 - Normalization of Cerebral Blood Flow, Neurochemicals, and White Matter Integrity after Kidney Transplantation.
Journal of the American Society of Nephrology
Article2021 - Evaluation of Screening Tests for Cognitive Impairment in Patients Receiving Maintenance Hemodialysis.
Journal of the American Society of Nephrology
Article2020 - Acute Declines in Renal Function during Intensive BP Lowering and Long-Term Risk of Death.
Journal of the American Society of Nephrology
Clinical Trial2018
Online presence
Updated 27 Aug 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/mark-sarnak-md
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 →doximity.com ↗ - ResearchGate
researchgate.net/scientific-contributions/Mark-J-Sarnak-38643495
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 →researchgate.net ↗ - ResearchGate
researchgate.net/scientific-contributions/Mark-Sarnak-2098000086
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →researchgate.net ↗
Mentions by others
where others cite or feature them- Other
events.theisn.org/event/session/person/771742
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 →events.theisn.org ↗ - Other
asn-online.org/media/podcast.aspx
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →asn-online.org ↗
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 Aug 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 →gsbs.tufts.edu ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →md.com ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →md.com ↗
- 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 →gsbs.tufts.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 →gsbs.tufts.edu ↗
Editorial & leadership roles
journal and society appointments- 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 →tuftsctsi.org ↗
- Chair
KDIGO Controversies Conference on Coronary Artery Disease and Valvular Disease in Kidney Disease
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 →tuftsctsi.org ↗ - Steering Committee member
KDIGO Controversies Conferences on Heart Failure in CKD and Blood Pressure in CKD
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 →tuftsctsi.org ↗
Awards & honors
honors on the public record- Shaul G. Massry Award
National Kidney Foundation
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 →tuftsctsi.org ↗ - Distinguished Faculty Award
Tufts University School of Medicine
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 →tuftsctsi.org ↗ - Elected member
American Association of Physicians
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →md.com ↗
Media & interviews
press, podcasts and appearances- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →youtube.com ↗
- provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →asn-online.org ↗
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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