Tonya Wei An, MD
NPI 1699292045ActiveIndividual· Orthopaedic Surgery· Stanford, CA
Orthopaedic Surgery (MD) in Stanford, California, trained at Washington University School of Medicine (class of 2016). 410 Medicare patients in 2024, $146,126 paid; all of their 146 Part D prescriptions were generic. Treace Medical Concepts, Inc. was the largest of 4 companies reporting payments in 2025, $24,052 in all, mostly consulting fees.
Overview
| NPI | 1699292045 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 26, 2017 |
| Last updated in NPPES | Apr 23, 2024 |
| Certified by provider | Apr 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | A153483 | CA |
| Orthopaedic Surgery, Foot and Ankle Surgery | 207XX0004X | A153483 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 410 |
|---|---|
| Services billed | 1,309 across 87 procedure codes |
| Paid by Medicare | $146,126 |
Part D prescriptions in 2024
| Prescriptions (claims) | 146 · 150 30-day fills |
|---|---|
| Patients | 46 |
| Total drug cost | $868.61 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Orthopedic Surgery |
| Telehealth | Offers telehealth |
Hospital affiliations
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$24,052 · 40 payments from 4 companies
- 2024$948.81 · 12 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Treace Medical Concepts, Inc. | $23,721 | 35 |
| Evolution Surgical, Inc | $141.72 | 1 |
| Paragon 28, Inc. | $133.04 | 2 |
| Stryker Corporation | $55.94 | 2 |
What the 2025 payments were for
- Consulting Fee$21,238 · 7 payments
- Travel and Lodging$1,809 · 12 payments
- Food and Beverage$1,005 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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