Yong-Yong Tam, M.D.
NPI 1831150853ActiveIndividual· Emergency Medicine· Alameda, CA
Emergency Medicine (M.D.) in Alameda, California, trained at Harvard Medical School (class of 1976). 249 Medicare patients in 2024, $36,301 paid; nearly all of their 112 Part D prescriptions were generic (95%).
Overview
| NPI | 1831150853 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 29, 2006 |
| Last updated in NPPES | Jan 12, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | G34363 | CA |
| Emergency Medicine | 207P00000X | 41264 | MA |
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 | 249 |
|---|---|
| Services billed | 302 across 18 procedure codes |
| Paid by Medicare | $36,301 |
Part D prescriptions in 2024
| Prescriptions (claims) | 112 · 112 30-day fills |
|---|---|
| Patients | 71 |
| Total drug cost | $888.76 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Emergency Medicine |
Medical groups
- Cep America - CaliforniaPomona, CA · 1,292 clinicians
- Alameda Health SystemOakland, CA · 601 clinicians
Hospital affiliations
- Alameda HospitalAlameda, CA
- El Camino HealthMountain View, 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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