Nicolas Prionas, MD, PHD
NPI 1972840361 · Radiation Oncology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicolas Prionas, MD, PHD is a Radiation Oncology Physician provider in San Francisco, CA (NPI 1972840361).
Provider details
- NPI number
- 1972840361
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A138608 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
999 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 275 | $51 |
| Calculation of Radiation Therapy Dose77300 | 184 | $37 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 77 | $220 |
| Design and Construction of Simple Radiation Treatment Device77332 | 74 | $27 |
| Design and Construction of Complex Radiation Treatment Device77334 | 69 | $69 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 51 | $202 |
Practice location
Mailing address
Additional practice locations (2)
- 39101 Civic Center DrFremont, CA 94538-5817Phone: (510) 796-7212
- 4610 X StSacramento, CA 95817-2200Phone: (916) 762-8993
Registry dates
- Enumerated
- 2013-01-07
- Last updated
- 2019-09-24
Frequently asked questions
- What is Nicolas Prionas's NPI number?
- Nicolas Prionas's National Provider Identifier (NPI) is 1972840361, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicolas Prionas's specialty?
- Nicolas Prionas is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Nicolas Prionas located?
- Nicolas Prionas's practice location on file with NPPES is 400 Parnassus Ave, San Francisco, CA 94143-2202.
- What is Nicolas Prionas's phone number?
- The practice phone number listed in the NPPES registry for Nicolas Prionas is (415) 353-2497.
- Does Nicolas Prionas accept Medicare?
- Nicolas Prionas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicolas Prionas's NPI active?
- Yes — Nicolas Prionas's NPI (1972840361) is active in the NPPES registry as of the last update on 2019-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.