John Robert Rostkowski, M.D.
NPI 1861424665ActiveIndividual· Psychiatry & Neurology, Psychiatry· Concord, CA
Psychiatry & Neurology, Psychiatry (M.D.) in Concord, California, trained at New York University School of Medicine (class of 1969). Their prescriptions cost Medicare Part D more than their services did: $124,392 for 1,001 claims, against $3,860 paid for services in 2024. Alkermes, Inc. was the largest of 4 companies reporting payments in 2025, $668.66 in all, mostly food and beverage.
Overview
| NPI | 1861424665 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 6, 2006 |
| Last updated in NPPES | Mar 1, 2023 |
| Certified by provider | Jun 15, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | G24111 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Psychiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 17 |
|---|---|
| Services billed | 33 across 5 procedure codes |
| Paid by Medicare | $3,860 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,001 · 1,550 30-day fills |
|---|---|
| Patients | 92 |
| Total drug cost | $124,392 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 1969 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Contra Costa CountyConcord, CA · 76 clinicians
Hospital affiliation
- Contra Costa Regional Medical CenterMartinez, CA
Industry payments (Open Payments)
- 2025$668.66 · 6 payments from 4 companies
- 2024$765.03 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alkermes, Inc. | $234.46 | 2 |
| E.R. Squibb & Sons, L.L.C. | $207.07 | 2 |
| Otsuka America Pharmaceutical, Inc. | $117.41 | 1 |
| Neurocrine Biosciences, Inc. | $109.72 | 1 |
What the 2025 payments were for
- Food and Beverage$668.66 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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