Grace Thammasuvimol, M.D.
NPI 1992948277ActiveIndividual· Psychiatry & Neurology, Child & Adolescent Psychiatry· Frederick, MD
Opted out of Medicare from February 2016 to February 2028. Psychiatry & Neurology, Child & Adolescent Psychiatry (M.D.) in Frederick, Maryland, licensed in MD, with an NPI issued in April 2009. Part D covered 144 prescriptions written in 2024, 93% of them generic.
Overview
| NPI | 1992948277 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 15, 2009 |
| Last updated in NPPES | Sep 22, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Child & Adolescent Psychiatry Primary | 2084P0804X | D72357 | MD |
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 Feb 4, 2016 – Feb 4, 2028 |
| 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) | 144 · 348 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $8,192 |
| Generic share | 93% 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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