Gary W. Chien, M.D.
NPI 1639121395ActiveIndividual· Urology· Los Angeles, CA
Urology (M.D.) with Southern California Permanente Medical Group, practicing in Los Angeles, California. Their prescriptions cost Medicare Part D more than their services did: $21,216 for 616 claims, against $2,695 paid for services in 2024. Astellas Pharma US Inc reported $114.89 in payments in 2025, mostly food and beverage. Lists Kaiser Foundation Hospital - Los Angeles as a hospital affiliation.
Overview
| NPI | 1639121395 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 17, 2006 |
| Last updated in NPPES | Nov 18, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | A67944 | 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 - Urology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 22 across 15 procedure codes |
| Paid by Medicare | $2,695 |
Part D prescriptions in 2024
| Prescriptions (claims) | 616 · 1,864 30-day fills |
|---|---|
| Patients | 179 |
| Total drug cost | $21,216 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Urology |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - Los AngelesLos Angeles, CA
Industry payments (Open Payments)
- 2025$114.89 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $114.89 | 1 |
What the 2025 payments were for
- Food and Beverage$114.89 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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