Nathan Hao Hsin Yen, MD
NPI 1013992338ActiveIndividual· Family Medicine· Riverside, CA
Family Medicine (MD) in Riverside, California, trained at Loma Linda University School of Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $149,095 for 4,877 claims, against $34,022 paid for services in 2024. Novo Nordisk Inc reported $110.28 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1013992338 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 9, 2005 |
| Last updated in NPPES | Apr 11, 2025 |
| Certified by provider | Apr 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | G72909 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 129 |
|---|---|
| Services billed | 438 across 21 procedure codes |
| Paid by Medicare | $34,022 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,877 · 11,959 30-day fills |
|---|---|
| Patients | 510 |
| Total drug cost | $149,095 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Family Practice |
Medical group
- Riverside Medical Clinic IncRiverside, CA · 173 clinicians
Industry payments (Open Payments)
- 2025$110.28 · 1 payment from 1 company
- 2024$44.56 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $110.28 | 1 |
What the 2025 payments were for
- Food and Beverage$110.28 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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