Willard Seiyoung Chung, MD
NPI 1285898635ActiveIndividual· Family Medicine· Santa Maria, CA
Family Medicine (MD) in Santa Maria, California, trained at Eastern Virginia Medical School (class of 2006). In 2024 Medicare paid $127,601 for 507 patients, and Part D covered 488 of their prescriptions, 87% of them generic.
Overview
| NPI | 1285898635 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 15, 2008 |
| Last updated in NPPES | Dec 20, 2022 |
| Certified by provider | Dec 20, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A104456 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 507 |
|---|---|
| Services billed | 1,332 across 15 procedure codes |
| Paid by Medicare | $127,601 |
Part D prescriptions in 2024
| Prescriptions (claims) | 488 · 580 30-day fills |
|---|---|
| Patients | 210 |
| Total drug cost | $32,439 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Eastern Virginia Medical School |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Family Practice |
Medical group
- Vituity Hospitalists PCRedwood City, CA · 79 clinicians
Hospital affiliations
- Adventist Health Twin CitiesTempleton, CA
- French Hospital Medical CenterSan Luis Obispo, CA
- Marian Regional Medical CenterSanta Maria, 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 101 family medicine physicians in Santa Maria · All family medicine physicians in California