Anne An-Ru Chen, M.D.
NPI 1003852708ActiveIndividual· Internal Medicine· Vacaville, CA
Internal Medicine (M.D.) in Vacaville, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $1,009,559 for 7,858 claims, against $33,298 paid for services in 2024.
Overview
| NPI | 1003852708 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 21, 2006 |
| Last updated in NPPES | Sep 30, 2025 |
| Certified by provider | Sep 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A83589 | CA |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 217 |
|---|---|
| Services billed | 393 across 11 procedure codes |
| Paid by Medicare | $33,298 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,858 · 18,301 30-day fills |
|---|---|
| Patients | 418 |
| Total drug cost | $1,009,559 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Valley Medical FoundationModesto, CA · 2,500 clinicians
Hospital affiliations
- Northbay Medical CenterFairfield, CA
- Sutter Medical Center, SacramentoSacramento, CA
- Sutter Solano Medical CenterVallejo, CA
Other facilities
- Angelcare Home Health Services, LLCHome health agency · Milpitas, CA
- Healthflex Home Health ServicesHome health agency · Oakland, CA
- Silverline Staff Home HealthHome health agency · Fremont, CA
- Sutter Care at HomeHome health agency · Concord, 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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