Tan Ky Nguyen, M.D.
NPI 1437173754ActiveIndividual· Emergency Medicine· Hayward, CA
Emergency Medicine (M.D.) in Hayward, California, trained at Tulane University School of Medicine (class of 1993). 635 Medicare patients in 2024, $103,229 paid; nearly all of their 410 Part D prescriptions were generic (93%).
Overview
| NPI | 1437173754 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Aug 1, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | G80578 | 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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 635 |
|---|---|
| Services billed | 875 across 48 procedure codes |
| Paid by Medicare | $103,229 |
Part D prescriptions in 2024
| Prescriptions (claims) | 410 · 415 30-day fills |
|---|---|
| Patients | 257 |
| Total drug cost | $6,333 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Tulane University School of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Emergency Medicine |
Medical group
- Cep America - CaliforniaPomona, CA · 1,292 clinicians
Hospital affiliations
- El Camino HealthMountain View, CA
- St Rose HospitalHayward, 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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All 28 emergency medicine physicians in Hayward · All emergency medicine physicians in California