Wan Yao, M.D.
NPI 1518951649ActiveIndividual· Internal Medicine· Monterey Park, CA
Internal Medicine (M.D.) in Monterey Park, California, licensed in CA, with an NPI issued in September 2005. Their prescriptions cost Medicare Part D more than their services did: $1,796,059 for 12,927 claims, against $58,449 paid for services in 2024. Amgen Inc. was the largest of 4 companies reporting payments in 2025, $330.75 in all, mostly consulting fees.
Overview
| NPI | 1518951649 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 5, 2005 |
| Last updated in NPPES | Apr 19, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A77060 | 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 | 119 |
|---|---|
| Services billed | 801 across 19 procedure codes |
| Paid by Medicare | $58,449 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,927 · 26,433 30-day fills |
|---|---|
| Patients | 698 |
| Total drug cost | $1,796,059 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Internal Medicine |
Other facilities
- Tender Care Home HealthHome health agency · San Gabriel, CA
Industry payments (Open Payments)
- 2025$330.75 · 8 payments from 4 companies
- 2024$117.83 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $264.60 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $22.53 | 1 |
| Neurocrine Biosciences, Inc. | $21.85 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $21.77 | 1 |
What the 2025 payments were for
- Consulting Fee$175.00 · 1 payment
- Food and Beverage$155.75 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 53 internal medicine physicians in Monterey Park · All internal medicine physicians in California