John Leonard, MD
Enriched profileChief, Division of Hematology and Medical Oncology & Director, Center for Blood Cancers, Perlmutter Cancer Center; Laura and Isaac Perlmutter Professor of Hematology and Medical Oncology, NYU Grossman School of Medicine · NYU Langone Health
John Leonard is Chief, Division of Hematology and Medical Oncology & Director, Center for Blood Cancers, Perlmutter Cancer Center; Laura and Isaac Perlmutter Professor of Hematology and Medical Oncology, NYU Grossman School of Medicine at NYU Langone Health. OpenAlex indexes 818 publications with 32,192 citations (h-index 86); ClinicalTrials.gov lists 12 registered studies with this person as an investigator. By OpenAlex citation count, this profile ranks in the top 5% of Hematology / Oncology profiles in the findmyKOL directory.
Data verified 14 Aug 2026
Overview
Updated 14 Oct 2026
John Leonard, MD, is Chief, Division of Hematology and Medical Oncology & Director, Center for Blood Cancers, Perlmutter Cancer Center at NYU Langone Health / NYU Grossman School of Medicine (Perlmutter Cancer Center). The public record shows 818 publications with 32,192 citations (h-index 86), centered on Lymphoma Diagnosis and Treatment, Chronic Lymphocytic Leukemia Research, CAR-T cell therapy research. It also documents an investigator role on 12 registered clinical trials, industry payments reported by 25 companies, 4 NIH-funded awards (1998–2008).
- Top research focus: Lymphoma Diagnosis and Treatment
- 12 registered trials on ClinicalTrials.gov
- Open Payments reporting from 25 companies
Generated from the cited public record · current as of 14 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; 4 in PubMed.
Total citations across indexed works.
Hirsch index (OpenAlex). i10-index 347.
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 14 Oct 2026
Listed as an investigator on 12 registered studies on ClinicalTrials.gov. The most recent:
- Study of Venetoclax Plus DA-EPOCH-R for the Treatment of Aggressive B-Cell Lymphomas
Sponsor: Weill Medical College of Cornell University
- Evaluation of Safety, Tolerability, and PK of VX15/2503 In Patients With MS
Sponsor: Vaccinex Inc.
Industry payments
Updated 14 Oct 2026
25 companies reported payments to CMS in program years 2021–2025. These are public disclosures, not judgments. The latest:
- Genentech, Inc.Program year20257 payments$18,265openpaymentsdata.cms.gov ↗
- AstraZeneca UK LimitedProgram year20252 payments
- Genentech USA, Inc.Program year20251 payment
Medicare prescribing footprint (2021)
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.
Anti-infectives
100%Short-acting sulfonamides100%Sulfamethoxazole-Trimethoprim100%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 14 Oct 2026
4 NIH research awards on record, funded 1998–2008 per NIH RePORTER. The latest:
- Overcoming resistance to first generation small molecule activators of PP2A.
Case Western Reserve University
FY2021$51,036F30CA224977 - Overcoming resistance to first generation small molecule activators of PP2A.
Case Western Reserve University
FY2020$45,520F30CA224977 - Overcoming resistance to first generation small molecule activators of PP2A.
Case Western Reserve University
FY2019$45,016F30CA224977
Congress activity
Updated 14 Oct 2026
159 congress contributions (2004–2026) across AACR, ASCO, ASH, ESMO per OpenAlex. The most recent:
- Association of immunotherapy infusion timing with outcomes in early-stage triple-negative breast cancer.
ASCO Annual Meeting
ASCO2026Co-author - Frontline intensified vs standard immunochemotherapy in high-risk diffuse large B-cell lymphoma: A systematic review and meta-analysis.
ASCO Annual Meeting
ASCO2026Co-author - Immune priming with the EZH2 inhibitor tazemetostat in B-cell lymphomas receiving CAR T-cell therapy.
ASCO Annual Meeting
ASCO2026Co-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
None on file yet. We only list publications we can confidently match to this person. Why? →
Most-cited works
by citation count (OpenAlex)- 01Genetics and Pathogenesis of Diffuse Large B-Cell LymphomaArticle2,289 citations2018
- 02
- 03Brentuximab Vedotin (SGN-35) for Relapsed CD30-Positive LymphomasArticle1,357 citations2010
- 04
- 05
Network
Updated 14 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 14 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- Spotify
open.spotify.com/show/6MQnPwZIXJHrCVBBxhTt37
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 →open.spotify.com ↗ - X / Twitter
x.com/JohnPLeonardMD
- ResearchGate
researchgate.net/scientific-contributions/John-Leonard-2086708445
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
onclive.com/authors/john-p-leonard-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 →onclive.com ↗ - X / Twitter
NYU Langone official announcement of appointment posted on X (@nyulangone)
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 14 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 →nyulangone.org ↗
- 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 →nyulangone.org ↗
- 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 →nyulangone.org ↗
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 →lymphoma.org ↗
- 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 →lymphoma.org ↗
- Chair
Lymphoma Committee, Alliance for Clinical Trials in Oncology (National Cancer Institute)
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 →news.weill.cornell.edu ↗ - Board Member
Leukemia & Lymphoma Society, New York City Chapter
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 →medicine.weill.cornell.edu ↗ - Elected member
American Board of Internal Medicine subspecialty board for Hematology
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 →medicine.weill.cornell.edu ↗ - provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →news.weill.cornell.edu ↗
- Editorial Board Member
Journal of Clinical Oncology
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →news.weill.cornell.edu ↗
Awards & honors
honors on the public record- Lifetime Achievement Award
Cancer Research & Treatment Fund, Inc. (CR&T), presented at the 2023 Cancer Survivors Hall of Fame Dinner
2023verifiedCorroborated 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 →medicine.weill.cornell.edu ↗ - Elected member
American Society for Clinical Investigation (ASCI), inducted at the 2009 Annual Joint Meeting (Chicago)
2009provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →medicine.weill.cornell.edu ↗ - Miriam G. Wallach Award for Excellence in Humanistic Medical Care
NewYork-Presbyterian Hospital
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 →medicine.weill.cornell.edu ↗
Media & interviews
press, podcasts and appearances- Video feature on receiving the Miriam G. Wallach Award for Excellence in Humanistic Medical Care
posted by the Weill Cornell/NYP Lymphoma Program
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →m.facebook.com ↗ - Patient education video contributor/interviewee
Patient Power
provisionalFound in a cited public source but not yet independently corroborated. Published as a labeled candidate and queued for verification.How we verify →patientpower.info ↗
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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