Doctor profile · Federal record
Dr. John Leonard, MD
Hematology & Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Medical Oncology Physician · New York, NY
- NPI 1992892079
- Accepts Medicare
- MIPS 93.4 / 100 · 2023
- 36 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
520 E 70Th St # Starr-341
New York, NY 100219800
(212) 746-2932
fax (212) 746-3305
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- September 19, 2011
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- New York #186477
- Medicaid
- NY #01688408
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1992892079. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
610
Distinct HCPCS
4
Medicare allowed
$76,199
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 392 | 197 | $111 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 167 | 61 | $162 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 37 | 30 | $75 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 14 | 14 | $207 |
In context: peer comparison
Among 103 peers in this city , average services per provider: 411. This provider delivers 1.5× the peer median.Open Payments
Industry payments received
All-time total
$24,974
Transactions
13
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Genentech, Inc. | 3 | $7,030.00 | |
| AstraZeneca UK Limited | 2 | $6,850.00 | |
| Genentech USA, Inc. | 1 | $2,850.00 | |
| Regeneron Pharmaceuticals, Inc. | 3 | $2,775.76 | |
| AstraZeneca Pharmaceuticals LP | 1 | $2,740.00 | |
| PFIZER INC. | 2 | $2,352.99 | |
| Merck Sharp & Dohme LLC | 1 | $375.00 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. John Leonard's medical specialty?
Dr. John Leonard practices Hematology & Oncology Physician in New York, NY.
Where does Dr. John Leonard practice?
Dr. John Leonard practices at 520 E 70Th St # Starr-341, New York, NY 100219800. Office phone: 2127462932.
What is Dr. John Leonard's NPI?
Dr. John Leonard's National Provider Identifier (NPI) is 1992892079, issued by NPPES.
Does Dr. John Leonard accept Medicare assignment?
Yes. Dr. John Leonard accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Leonard commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.