Doctor profile · Federal record
Dr. William Chen, MD
Radiation Oncology Physician (CMS: Radiation Oncology) · Student in an Organized Health Care Education/Training Program · San Francisco, CA
- NPI 1417452251
- Accepts Medicare
- MIPS 70.8 / 100 · 2023
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1600 Divisadero St Ste H-1031
San Francisco, CA 941433010
(415) 353-7175 - Additional location
-
2425 Geary Blvd
San Francisco, CA 941153358
(415) 833-2000
Credentials & registration
- NPI registered
- March 2018 — 8 yrs on file
- Profile last updated
- June 13, 2023
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- California #A166045
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1417452251. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
308
Distinct HCPCS
9
Medicare allowed
$45,825
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77014 |
Ct guidance for insertion of radiation therapy fields | 124 | 31 | $51 | |
77300 |
Calculation of radiation therapy dose | 45 | 14 | $38 | |
77427 |
Radiation treatment management, 5 treatment sessions | 37 | 22 | $220 | |
77334 |
Design and construction of complex radiation treatment device | 32 | 23 | $70 | |
77435 |
Management of cranial lesion surgery using radiation over multiple sessions | 17 | 14 | $731 | |
77263 |
Complex radiation therapy planning | 15 | 14 | $192 | |
77301 |
High precision radiation therapy planning | 13 | 12 | $484 | |
77338 |
Design and construction of radiation treatment device for high precision radiation therapy | 13 | 12 | $260 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 12 | 12 | $202 |
In context: peer comparison
Among 11 peers in San Francisco Radiation Oncology Physician, average services per provider: 83. This provider delivers 3.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
24
Patients
0
Total drug cost
$439
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Hcl | Generic | 12 | 0 | $215 |
| Tamsulosin Hcl | Generic | 12 | 0 | $225 |
Hospital affiliations
Frequently asked questions
What is Dr. William Chen's medical specialty?
Dr. William Chen practices Radiation Oncology Physician in San Francisco, CA.
Where does Dr. William Chen practice?
Dr. William Chen practices at 1600 Divisadero St Ste H-1031, San Francisco, CA 941433010. Office phone: 4153537175.
What is Dr. William Chen's NPI?
Dr. William Chen's National Provider Identifier (NPI) is 1417452251, issued by NPPES.
Does Dr. William Chen accept Medicare assignment?
Yes. Dr. William Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Chen commonly perform?
Top Medicare-reported procedures in 2023: Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Calculation of radiation therapy dose (HCPCS 77300); Radiation treatment management, 5 treatment sessions (HCPCS 77427). Source: CMS Medicare Physician & Other Practitioners file.