Andrew Yen, M.D.
NPI 1992781884ActiveIndividual· Internal Medicine· Mather, CA
Internal Medicine (M.D.) in Mather, California, licensed in CA, with an NPI issued in December 2005. Aimmune Therapeutics, Inc. was the largest of 4 companies reporting payments in 2025, $247.42 in all, mostly food and beverage.
Overview
| NPI | 1992781884 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 21, 2005 |
| Last updated in NPPES | Aug 10, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A92631 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Industry payments (Open Payments)
- 2025$247.42 · 6 payments from 4 companies
- 2024$72.55 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aimmune Therapeutics, Inc. | $116.16 | 1 |
| Cook Medical LLC | $71.05 | 2 |
| Olympus America Inc. | $36.52 | 2 |
| Pfizer Inc. | $23.69 | 1 |
What the 2025 payments were for
- Food and Beverage$247.42 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 internal medicine physicians in Mather · All internal medicine physicians in California