Roya Marzieh Nasseri, M.D.
NPI 1265695688ActiveIndividual· Family Medicine· Simi Valley, CA
Family Medicine (M.D.) with The Regents of the University of California, practicing in Simi Valley, California. Their prescriptions cost Medicare Part D more than their services did: $167,662 for 2,329 claims, against $60,244 paid for services in 2024. Glaxosmithkline, LLC. reported $119.02 in payments in 2025, mostly food and beverage. Lists Adventist Health Simi Valley and 1 other hospital as hospital affiliations.
Overview
| NPI | 1265695688 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 7, 2008 |
| Last updated in NPPES | Jan 12, 2026 |
| Certified by provider | Jan 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | C146434 | 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 | 409 |
|---|---|
| Services billed | 1,365 across 37 procedure codes |
| Paid by Medicare | $60,244 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,329 · 5,488 30-day fills |
|---|---|
| Patients | 304 |
| Total drug cost | $167,662 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- Adventist Health Simi ValleySimi Valley, CA
- UCLA West Valley Medical CenterWest Hills, CA
Other facilities
- La Vida Home Health, Inc.Home health agency · Burbank, CA
Industry payments (Open Payments)
- 2025$119.02 · 1 payment from 1 company
- 2024$31.02 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $119.02 | 1 |
What the 2025 payments were for
- Food and Beverage$119.02 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 83 family medicine physicians in Simi Valley · All family medicine physicians in California