Grace Zapata Ang, M.D.
NPI 1902990245ActiveIndividual· Internal Medicine· Napa, CA
Internal Medicine (M.D.) with Department of State Hospitals, practicing in Napa, California. Medicare paid $658.65 for services to 18 patients in 2024. Lists Providence Queen of the Valley Medical Center as a hospital affiliation.
Overview
| NPI | 1902990245 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 3, 2006 |
| Last updated in NPPES | Apr 2, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A68373 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 18 |
|---|---|
| Services billed | 22 across 2 procedure codes |
| Paid by Medicare | $658.65 |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Department of State HospitalsNapa, CA · 270 clinicians
Hospital affiliation
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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