William James Demartini, M.D.
NPI 1427091016ActiveIndividual· Radiology, Diagnostic Radiology· Greenbrae, CA
Radiology, Diagnostic Radiology (M.D.) with California Advanced Imaging Medical Associates Inc, practicing in Greenbrae, California. Medicare paid $77,799 for services to 1,436 patients in 2024. Lists Providence Queen of the Valley Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1427091016 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 13, 2006 |
| Last updated in NPPES | Apr 26, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | G27905 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Diagnostic Radiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,436 |
|---|---|
| Services billed | 2,762 across 139 procedure codes |
| Paid by Medicare | $77,799 |
Education and affiliations
| Graduation year | 1973 |
|---|---|
| Medicare specialty | Diagnostic Radiology |
Medical group
- California Advanced Imaging Medical Associates IncSan Francisco, CA · 88 clinicians
Hospital affiliations
- Providence Queen of the Valley Medical CenterNapa, CA
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA
- Sonoma Valley HospitalSonoma, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other diagnostic radiologists in Greenbrae
- 1427460096
- 1164549630
- 1295781201
- 1346424991
- 1891734265
- 1245271634
- 1275519001
- 1386686525
- 1578946026
- 1659357481
- 1679550032
- 1689628679
All 15 diagnostic radiologists in Greenbrae · All diagnostic radiologists in California