Mehrdad Michael Mahdad, M.D.
NPI 1225092190ActiveIndividual· Psychiatry & Neurology, Neurology· Fountain Valley, CA
Psychiatry & Neurology, Neurology (M.D.) in Fountain Valley, California, licensed in CA, with an NPI issued in April 2006. Their prescriptions cost Medicare Part D more than their services did: $759,842 for 4,136 claims, against $99,564 paid for services in 2024. Neurocrine Biosciences, Inc. was the largest of 6 companies reporting payments in 2025, $590.74 in all, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian and 1 other hospital as hospital affiliations.
Overview
| NPI | 1225092190 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 17, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | A42941 | 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 - Neurology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 465 |
|---|---|
| Services billed | 1,945 across 25 procedure codes |
| Paid by Medicare | $99,564 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,136 · 8,488 30-day fills |
|---|---|
| Patients | 745 |
| Total drug cost | $759,842 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 1980 |
|---|---|
| Medicare specialty | Neurology |
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Huntington Beach HospitalHuntington Beach, CA
Industry payments (Open Payments)
- 2025$590.74 · 9 payments from 6 companies
- 2024$717.32 · 24 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Neurocrine Biosciences, Inc. | $127.57 | 1 |
| Janssen Biotech, Inc. | $127.30 | 1 |
| Avadel Cns Pharmaceuticals, LLC | $119.70 | 1 |
| Tg Therapeutics, Inc. | $99.45 | 1 |
| Abbvie Inc. | $85.70 | 4 |
What the 2025 payments were for
- Food and Beverage$590.74 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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