Tamar Marietta Seiver, MD
NPI 1306062740ActiveIndividual· Psychiatry & Neurology, Psychiatry· Corte Madera, CA
Opted out of Medicare from October 2017 to October 2027. Psychiatry & Neurology, Psychiatry (MD) in Corte Madera, California, licensed in CA, with an NPI issued in April 2007. Part D covered 80 prescriptions written in 2024, 100% of them generic.
Overview
| NPI | 1306062740 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 17, 2007 |
| Last updated in NPPES | Dec 16, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | A66165 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Oct 4, 2017 – Oct 4, 2027 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 80 · 190 30-day fills |
|---|---|
| Patients | 14 |
| Total drug cost | $1,526 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 psychiatrists in Corte Madera · All psychiatrists in California