Joanna W. Chen, MD
NPI 1851463335ActiveIndividual· Internal Medicine· Baldwin Park, CA
Internal Medicine (MD) in Baldwin Park, California, trained at University of Arizona College of Medicine (class of 1996). Part D covered 5,405 prescriptions written in 2024, 91% of them generic. Takeda Pharmaceuticals U.S.A., Inc. reported $14.36 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1851463335 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 14, 2006 |
| Last updated in NPPES | Nov 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A67859 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 5,405 · 14,588 30-day fills |
|---|---|
| Patients | 732 |
| Total drug cost | $249,437 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Arizona College of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - Baldwin ParkBaldwin Park, CA
Industry payments (Open Payments)
- 2025$14.36 · 1 payment from 1 company
- 2024$21.98 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $14.36 | 1 |
What the 2025 payments were for
- Food and Beverage$14.36 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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