Walter Zaks, M. D.
NPI 1316906704ActiveIndividual· Family Medicine· Benicia, CA
Family Medicine (M. D.) in Benicia, California, trained at University of California, San Francisco School of Medicine (class of 1975). Their prescriptions cost Medicare Part D more than their services did: $248,604 for 3,139 claims, against $121,506 paid for services in 2024.
Overview
| NPI | 1316906704 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M. D. |
| Sole proprietor | Yes |
| NPI issued | Mar 22, 2006 |
| Last updated in NPPES | May 19, 2025 |
| Certified by provider | May 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | G34777 | 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 | 241 |
|---|---|
| Services billed | 1,403 across 48 procedure codes |
| Paid by Medicare | $121,506 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,139 · 6,976 30-day fills |
|---|---|
| Patients | 279 |
| Total drug cost | $248,604 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Sutter Solano Medical CenterVallejo, CA
Other facilities
- John Muir Home Health ServicesHome health agency · Concord, 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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