Maryam Ziaie Matin, MD
NPI 1124133111ActiveIndividual· Internal Medicine, Geriatric Medicine· Greenbrae, CA
Internal Medicine, Geriatric Medicine (MD) in Greenbrae, California, licensed in CA, with an NPI issued in August 2006. Their prescriptions cost Medicare Part D more than their services did: $287,986 for 4,150 claims, against $55,828 paid for services in 2024. Lexicon Pharmaceuticals, Inc. reported $124.59 in payments in 2025, mostly food and beverage. Lists California Pacific Medical Center- Van Ness Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1124133111 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 20, 2006 |
| Last updated in NPPES | Jan 10, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | A78803 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 101 |
|---|---|
| Services billed | 632 across 14 procedure codes |
| Paid by Medicare | $55,828 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,150 · 5,049 30-day fills |
|---|---|
| Patients | 168 |
| Total drug cost | $287,986 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine, Hospice/Palliative Care |
| Telehealth | Offers telehealth |
Hospital affiliations
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- Marinhealth Medical CenterGreenbrae, CA
Other facilities
- The TamalpaisNursing home · Greenbrae, CA
Industry payments (Open Payments)
- 2025$124.59 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lexicon Pharmaceuticals, Inc. | $124.59 | 1 |
What the 2025 payments were for
- Food and Beverage$124.59 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other geriatricians in Greenbrae
- 1174746325
- 1316087612