JOHN P LEONARD MD
NPI 1992892079
Internal Medicine - Hematology & Oncology in New York, NY
About John P Leonard Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN P LEONARD MD (NPI 1992892079) is an individual hematology & oncology provider in New York, New York, licensed in New York (186477) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of University Of Virginia School Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John P Leonard Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show John Leonard reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 980 clinicians in this Medicare group
Boynton Beach, FL 33426
- Reassigned Medicare billing, New York enrollment
- 2,450 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
New York-Presbyterian Hospital
Acute Care Hospitals · New York, NYNyu Langone Hospitals
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10021 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
NEW YORK, NY 10021
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Leonard's NPI number?
The NPI number for John Leonard is 1992892079. It was assigned to this individual provider in the NPPES registry on October 9, 2006.
Where is John Leonard located?
John Leonard practices at 520 E 70th St # Starr-341, New York, NY 10021. The listed phone number is (212) 746-2932.
What is John Leonard's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is John Leonard enrolled in Medicare?
Yes. John Leonard is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Leonard's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Leonard reassigns Medicare benefits to 2 organizations: Weill Medical College Of Cornell (New York, NY) and New York University (Boynton Beach, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Leonard's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Leonard affiliated with any hospitals?
According to CMS data, John Leonard is affiliated with New York-Presbyterian Hospital and Nyu Langone Hospitals.
When was this NPI record last updated?
The NPPES record for John Leonard was last updated on September 19, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John P Leonard, MD · NPI 1992892079
Hematology & Oncology physician in New York, New York. Individual provider, active in the CMS NPPES registry since October 9, 2006.
## Identity
- **NPI:** 1992892079 (Entity type: Individual)
- **Enumerated:** October 9, 2006
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** 186477 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 520 E 70TH ST # STARR-341, New York, NY 10021-9800
- **Phone:** (212) 746-2932 · **Fax:** (212) 746-3305
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Weill Medical College Of Cornell (NPI 1770892580, New York, NY); New York University (NPI 1285826438, Boynton Beach, FL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Virginia School Of Medicine, class of 1990
## Record status
- **NPPES last updated:** September 19, 2011
- **Other identifiers:** Medicare UPIN G37473 (NY); Medicare ID-Type Unspecified 16N561 (NY); Medicaid 01688408 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1992892079) · Data from the CMS NPPES public registry.