Peter W. Ackerman, MD
NPI 1427435023ActiveIndividual· Emergency Medicine· Walnut Creek, CA
Emergency Medicine (MD) with Permanente Medical Group Inc and 1 other group, practicing in Walnut Creek, California. 466 Medicare patients in 2024, $65,848 paid; nearly all of their 147 Part D prescriptions were generic (95%). Janssen Pharmaceuticals, Inc reported $25.52 in payments in 2024, mostly food and beverage. Lists Kaiser Foundation Hospital - Antioch and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1427435023 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 4, 2015 |
| Last updated in NPPES | Feb 24, 2026 |
| Certified by provider | Feb 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 292833 | NY |
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 Practitioner - Emergency Medicine (CA); Practitioner - Emergency Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 466 |
|---|---|
| Services billed | 508 across 21 procedure codes |
| Paid by Medicare | $65,848 |
Part D prescriptions in 2024
| Prescriptions (claims) | 147 · 147 30-day fills |
|---|---|
| Patients | 114 |
| Total drug cost | $3,292 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Emergency Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
- East Post Road Medical Services PCWhite Plains, NY · 429 clinicians
Hospital affiliations
- Kaiser Foundation Hospital - AntiochAntioch, CA
- Kaiser Foundation Hospital - Walnut CreekWalnut Creek, CA
- White Plains Hospital CenterWhite Plains, NY
Industry payments (Open Payments)
- 2024$25.52 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Janssen Pharmaceuticals, Inc | $25.52 | 1 |
What the 2024 payments were for
- Food and Beverage$25.52 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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