Robert Matthews, M.D.
NPI 1215963186 · Nuclear Radiology Physician · Walnut Creek, CA
Provider details
- NPI number
- 1215963186
- Entity type
- Individual
- Primary specialty
- Nuclear Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 232749 (NY)
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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
105 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) |
|---|---|---|
| Fluorodeoxyglucose F-18 Fdg, Diagnostic, Per Study Dose, Up to 45 MillicuriesA9552 | 30 | $186 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 29 | $1,735 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 19 | $125 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 16 | $84 |
| Nuclear Medicine Study, Spect Imaging With Concurrent Ct Scan, 1 Area Or Single Acquisition, Single Day Imaging78830 | 11 | $74 |
Typical Medicare-allowed amounts for these services range $74–$1,735 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- University Hospital, L4Stony Brook, NY 11794-0001Phone: (631) 444-6919
Registry dates
- Enumerated
- 2006-06-23
- Last updated
- 2022-06-22
- Certified
- 2022-06-22
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.