Doctor profile · Federal record
Dr. Cesar Castro, M.D., M.Sc.
Medical Oncology Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Boston, MA
- NPI 1184824112
- Accepts Medicare
- 21 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
185 Cambridge St Fl 5
Boston, MA 021142790
(617) 726-2000
fax (617) 643-3244 - Additional location
-
75 Francis St
Boston, MA 021156106
(617) 732-5500 - Mailing address
-
55 Fruit St
Boston, MA 021142621
Credentials & registration
- NPI registered
- July 2007 — 19 yrs on file
- Profile last updated
- February 9, 2026
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- Massachusetts #235484
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1184824112. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
203
Distinct HCPCS
2
Medicare allowed
$30,087
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 173 | 46 | $152 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 30 | 11 | $126 |
In context: peer comparison
Among 103 peers in this city , average services per provider: 67. This provider delivers 3.0× the peer median.Open Payments
Industry payments received
All-time total
$18,000
Transactions
12
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| QIAGEN, LLC | 12 | $18,000.00 |
By nature of payment
Frequently asked questions
What is Dr. Cesar Castro's medical specialty?
Dr. Cesar Castro practices Medical Oncology Physician in Boston, MA.
Where does Dr. Cesar Castro practice?
Dr. Cesar Castro practices at 185 Cambridge St Fl 5, Boston, MA 021142790. Office phone: 6177262000.
What is Dr. Cesar Castro's NPI?
Dr. Cesar Castro's National Provider Identifier (NPI) is 1184824112, issued by NPPES.
Does Dr. Cesar Castro accept Medicare assignment?
Yes. Dr. Cesar Castro accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Cesar Castro 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.