Paul Chen, M.D.
NPI 1588689350ActiveIndividual· Internal Medicine· Rialto, CA
Internal Medicine (M.D.) in Rialto, California, trained at George Washington University School of Medicine (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $1,100,692 for 15,402 claims, against $26,855 paid for services in 2024. Biotissue Holdings Inc. reported $368.98 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1588689350 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 13, 2006 |
| Last updated in NPPES | Dec 7, 2025 |
| Certified by provider | Dec 7, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A86154 | 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 | 133 |
|---|---|
| Services billed | 438 across 23 procedure codes |
| Paid by Medicare | $26,855 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,402 · 35,497 30-day fills |
|---|---|
| Patients | 896 |
| Total drug cost | $1,100,692 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Pinnacle Medical Group IncFontana, CA · 19 clinicians
Industry payments (Open Payments)
- 2025$368.98 · 2 payments from 1 company
- 2024$165.22 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biotissue Holdings Inc. | $368.98 | 2 |
What the 2025 payments were for
- Food and Beverage$368.98 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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