William N. Gonser, M.D.
NPI 1952348617ActiveIndividual· Radiology, Diagnostic Radiology· Fairfield, CA
Radiology, Diagnostic Radiology (M.D.) in Fairfield, California, trained at Saint Louis University School of Medicine (class of 1988). Medicare paid $20,666 for services to 622 patients in 2024.
Overview
| NPI | 1952348617 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 1, 2006 |
| Last updated in NPPES | Apr 16, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | G73301 | 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 | 622 |
|---|---|
| Services billed | 1,111 across 100 procedure codes |
| Paid by Medicare | $20,666 |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Diagnostic Radiology |
Medical groups
- Adventist Health Physicians NetworkSaint Helena, CA · 628 clinicians
- Ukiah Adventist HospitalUkiah, CA · 135 clinicians
- Willits Hospital IncWillits, CA · 67 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Adventist Health Howard MemorialWillits, CA
- Adventist Health Mendocino CoastFort Bragg, CA
- Adventist Health Ukiah ValleyUkiah, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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