William J. Zepf, MD
NPI 1063512069ActiveIndividual· Family Medicine· Davis, CA
Family Medicine (MD) in Davis, California, trained at University of California, San Diego School of Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $487,846 for 4,477 claims, against $85,045 paid for services in 2024.
Overview
| NPI | 1063512069 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 22, 2006 |
| Last updated in NPPES | Jun 12, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | G72554 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 287 |
|---|---|
| Services billed | 1,296 across 56 procedure codes |
| Paid by Medicare | $85,045 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,477 · 9,225 30-day fills |
|---|---|
| Patients | 285 |
| Total drug cost | $487,846 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Sutter Valley Medical FoundationModesto, CA · 2,500 clinicians
Hospital affiliations
- Sutter Davis HospitalDavis, CA
- Sutter Medical Center, SacramentoSacramento, CA
Other facilities
- Sutter Care at HomeHome health agency · Sacramento, 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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All 102 family medicine physicians in Davis · All family medicine physicians in California