Zachary Jon Walder, DO
NPI 1417585597ActiveIndividual· Internal Medicine· Placerville, CA
Internal Medicine (DO) in Placerville, California, licensed in CA, with an NPI issued in April 2020. Part D covered 3,172 prescriptions written in 2024, 88% of them generic. Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $187.77 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1417585597 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Apr 1, 2020 |
| Last updated in NPPES | Jan 4, 2024 |
| Certified by provider | Jan 4, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20A21369 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Order and Referring Only - Internal Medicine (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 3,172 · 5,051 30-day fills |
|---|---|
| Patients | 317 |
| Total drug cost | $341,393 |
| Generic share | 88% of claims |
Industry payments (Open Payments)
- 2025$187.77 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $187.77 | 2 |
What the 2025 payments were for
- Food and Beverage$97.53 · 1 payment
- Education$90.24 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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