John P. Leonard, MD
Hematology & Oncology Physician · New York, NY
John P. Leonard, MD is a hematology & oncology physician with a practice address in New York, New York, and NPI 1992892079, issued on Oct 9, 2006. Check the license (New York 186477, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John P. Leonard
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 186477 NY
Self-reported in NPPES; status is on the state search - Practice location
- 520 E 70TH St # Starr-341, New York, NY 10021
- Phone
- (212) 746-2932
- Enumerated
- Oct 9, 2006
- Record last updated
- Sep 19, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (212) 746-3305
- Medicaid ID
- 01688408 NY
- Medicare enrollment
- Enrolled (PECOS I20060301000795); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 520 E 70TH St # Starr-341
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric Feldman, MDMedical Oncology Physician1972690055
- Richard Furman, MDHematology (Internal Medicine) Physician1770670861
- Jeffrey Laurence, MDHematology & Oncology Physician1720175805
- Ralph Nachman, MDInternal Medicine Physician1275620346
- Roger Pearse, MDMedical Oncology Physician1518057785
- Gail Roboz, MDHematology & Oncology Physician1417044504
Verify John P. Leonard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 186477Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $24,973.75
13 payments; by number, the most common kind was consulting fee; the largest payer was Genentech, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- New York UniversityNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John P. Leonard among 1,163 hematology & oncology physician records in New York
John P. Leonard, MD is one of 1,163 hematology & oncology physician records with a practice address in New York. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1990 · median 2002 among the 833 with a school on file
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in New York
There are 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in New York → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Juliet Barker, MBBSNew York, NY 100211497726426
- Kathleen Cathcart, MDNew York, NY 100211508806050
- Chau Dang, MDNew York, NY 100211861422982
- Orli Etingin, MDNew York, NY 100211154418234
- Katharine Hsu, MDNew York, NY 100211720059769
- Jeffrey Laurence, MDNew York, NY 100211720175805
- Sebastian Alexander Mayer, MDNew York, NY 100211982627873
- Maria Palomba, MDNew York, NY 100211487625380
Common questions
What is John P. Leonard, MD's NPI number?
John P. Leonard, MD's National Provider Identifier (NPI) is 1992892079, issued on Oct 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John P. Leonard, MD located?
The NPPES record lists a practice address at 520 E 70TH St # Starr-341, New York, NY, 10021. Phone: (212) 746-2932. Providers update this record themselves, so call before visiting.
How can I verify John P. Leonard, MD's license?
NPPES lists New York license number 186477, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is John P. Leonard, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.