Chau Ton-That, D.O.
NPI 1205902301ActiveIndividual· Psychiatry & Neurology, Psychiatry· Westminster, CA
Psychiatry & Neurology, Psychiatry (D.O.) in Westminster, California, trained at College of Osteo Med of the Pacific at Pomona (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $1,071,543 for 9,934 claims, against $58,307 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 9 companies reporting payments in 2025, $1,737 in all, mostly food and beverage.
Overview
| NPI | 1205902301 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Nov 28, 2006 |
| Last updated in NPPES | Apr 26, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 20A7177 | 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 - Psychiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 112 |
|---|---|
| Services billed | 738 across 3 procedure codes |
| Paid by Medicare | $58,307 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,934 · 10,882 30-day fills |
|---|---|
| Patients | 563 |
| Total drug cost | $1,071,543 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | College of Osteo Med of the Pacific at Pomona |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Psychiatry |
Industry payments (Open Payments)
- 2025$1,737 · 72 payments from 9 companies
- 2024$1,408 · 57 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $467.12 | 16 |
| Vanda Pharmaceuticals Inc. | $437.70 | 14 |
| Alkermes, Inc. | $333.00 | 18 |
| E.R. Squibb & Sons, L.L.C. | $201.06 | 9 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $154.88 | 10 |
What the 2025 payments were for
- Food and Beverage$1,737 · 72 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other psychiatrists in Westminster
- 1457762346
- 1609296177
- 1336503838
- 1174961981
- 1528021516
- 1609497916
- 1104518075
- 1962525006
- 1891923173
- 1629015656