Doctor profile · Federal record
Dr. Nicolas Prionas, MD, PHD
Radiation Oncology Physician (CMS: Radiation Oncology) · San Francisco, CA
- NPI 1972840361
- Accepts Medicare
- MIPS 70.8 / 100 · 2023
- 12 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
400 Parnassus Ave
San Francisco, CA 941432202
(415) 353-2497 - Additional location
-
39101 Civic Center Dr
Fremont, CA 945385817
(510) 796-7212 - Additional location
-
4610 X St
Sacramento, CA 958172200
(916) 762-8993 - Mailing address
-
1600 Divisadero St Bsmt Level
San Francisco, CA 941433010
Credentials & registration
- NPI registered
- January 2013 — 13 yrs on file
- Profile last updated
- September 24, 2019
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- California #A138608
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1972840361. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
783
Distinct HCPCS
10
Medicare allowed
$90,964
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77014 |
Ct guidance for insertion of radiation therapy fields | 209 | 39 | $52 | |
77300 |
Calculation of radiation therapy dose | 144 | 39 | $38 | |
77334 |
Design and construction of complex radiation treatment device | 58 | 20 | $70 | |
77427 |
Radiation treatment management, 5 treatment sessions | 58 | 25 | $222 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 51 | 51 | $203 | |
77332 |
Design and construction of simple radiation treatment device | 45 | 42 | $28 | |
G6002 |
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 42 | 13 | $24 | |
77263 |
Complex radiation therapy planning | 40 | 40 | $193 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 28 | 22 | $35 | |
77301 |
High precision radiation therapy planning | 25 | 25 | $488 |
In context: peer comparison
Among 11 peers in San Francisco Radiation Oncology Physician, average services per provider: 83. This provider delivers 9.4× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Nicolas Prionas's medical specialty?
Dr. Nicolas Prionas practices Radiation Oncology Physician in San Francisco, CA.
Where does Dr. Nicolas Prionas practice?
Dr. Nicolas Prionas practices at 400 Parnassus Ave, San Francisco, CA 941432202. Office phone: 4153532497.
What is Dr. Nicolas Prionas's NPI?
Dr. Nicolas Prionas's National Provider Identifier (NPI) is 1972840361, issued by NPPES.
Does Dr. Nicolas Prionas accept Medicare assignment?
Yes. Dr. Nicolas Prionas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nicolas Prionas 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); Design and construction of complex radiation treatment device (HCPCS 77334). Source: CMS Medicare Physician & Other Practitioners file.