Doctor profile · Federal record
Dr. James O'Leary, M.D.
Medical Oncology Physician · Waltham, MA
- NPI 1336371012
- 17 yrs on file
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
830 Winter St
Waltham, MA 024511477
(781) 895-0600
fax (781) 895-0611
Credentials & registration
- NPI registered
- August 2009 — 17 yrs on file
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- New York #188142
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336371012. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$10,750
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., INC. | 2 | $10,750.00 |
By nature of payment
Frequently asked questions
What is Dr. James O'Leary's medical specialty?
Dr. James O'Leary practices Medical Oncology Physician in Waltham, MA.
Where does Dr. James O'Leary practice?
Dr. James O'Leary practices at 830 Winter St, Waltham, MA 024511477. Office phone: 7818950600.
What is Dr. James O'Leary's NPI?
Dr. James O'Leary's National Provider Identifier (NPI) is 1336371012, issued by NPPES.