Tom S. Chien, MD
NPI 1225205131ActiveIndividual· Emergency Medicine· Arlington, VA
Emergency Medicine (MD) in Arlington, Virginia, trained at George Washington University School of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $7,258 for 402 claims, against $3,472 paid for services in 2024.
Overview
| NPI | 1225205131 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 9, 2008 |
| Last updated in NPPES | Feb 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 0101242208 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 27 |
|---|---|
| Services billed | 27 across 1 procedure code |
| Paid by Medicare | $3,472 |
Part D prescriptions in 2024
| Prescriptions (claims) | 402 · 416 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $7,258 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Emergency Medicine |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - South San FranciscoSouth San Francisco, CA
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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