Andrew A. Chen, M.D.
NPI 1811039480ActiveIndividual· Urology· Walnut Creek, CA
Urology (M.D.) in Walnut Creek, California, trained at University of Southern California Keck School of Medicine (class of 2000). Part D covered 1,459 prescriptions written in 2024, 98% of them generic. Janssen Biotech, Inc. reported $16.39 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1811039480 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 12, 2007 |
| Last updated in NPPES | Feb 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | A80210 | CA |
| Urology | 208800000X | 238799 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Urology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 1,459 · 3,950 30-day fills |
|---|---|
| Patients | 425 |
| Total drug cost | $53,085 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Urology |
| Telehealth | Offers telehealth |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Industry payments (Open Payments)
- 2025$16.39 · 1 payment from 1 company
- 2024$174.13 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $16.39 | 1 |
What the 2025 payments were for
- Food and Beverage$16.39 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Urology providers in Walnut Creek
- 1487800728
- 1699916395
- 1154486793
- 1033528351
- 1215015797
- 1750729976
- 1215015896
- 1891793980
- 1265427975
- 1952920357
- 1437237526
- 1649358730