Aaron Joseph Zaks, DO
NPI 1447600317ActiveIndividual· Family Medicine· Benicia, CA
Family Medicine (DO) with Family Health Center of Benicia, practicing in Benicia, California. Their prescriptions cost Medicare Part D more than their services did: $175,849 for 2,943 claims, against $61,179 paid for services in 2024. Vertex Pharmaceuticals Incorporated reported $102.57 in payments in 2025, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1447600317 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 21, 2016 |
| Last updated in NPPES | May 19, 2025 |
| Certified by provider | May 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 20A15814 | 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 | 186 |
|---|---|
| Services billed | 1,045 across 34 procedure codes |
| Paid by Medicare | $61,179 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,943 · 6,106 30-day fills |
|---|---|
| Patients | 382 |
| Total drug cost | $175,849 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Family Health Center of BeniciaBenicia, CA · 3 clinicians
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)
- 2025$102.57 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $102.57 | 1 |
What the 2025 payments were for
- Food and Beverage$102.57 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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