Doctor profile · Federal record
Dr. Othon Iliopoulos, MD
Medical Oncology Physician (CMS: Medical Oncology) · Boston, MA
- NPI 1447352448
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
100 Blossom Street, Yaw 7 Massachusetts General Hospital
Boston, MA 021142617
(617) 724-3404
fax (617) 726-8623 - Mailing address
-
Po Box 9142, Mass General Physician Organization
Charlestown, MA 021299142
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- December 18, 2012
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- Massachusetts #76267
- Medicaid
- MA #0117749
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1447352448. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
117
Distinct HCPCS
2
Medicare allowed
$17,331
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 97 | 45 | $153 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 20 | 14 | $126 |
In context: peer comparison
Among 103 peers in this city , average services per provider: 67. This provider delivers 1.7× the peer median.Open Payments
Industry payments received
All-time total
$18
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 1 | $18.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
28
Patients
0
Total drug cost
$793,504
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Welireg (Belzutifan) | Brand | 28 | 0 | $793,504 |
Hospital affiliations
Frequently asked questions
What is Dr. Othon Iliopoulos's medical specialty?
Dr. Othon Iliopoulos practices Medical Oncology Physician in Boston, MA.
Where does Dr. Othon Iliopoulos practice?
Dr. Othon Iliopoulos practices at 100 Blossom Street, Boston, MA 021142617. Office phone: 6177243404.
What is Dr. Othon Iliopoulos's NPI?
Dr. Othon Iliopoulos's National Provider Identifier (NPI) is 1447352448, issued by NPPES.
Does Dr. Othon Iliopoulos accept Medicare assignment?
Yes. Dr. Othon Iliopoulos accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Othon Iliopoulos commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.