William M. Ko, MD
NPI 1629011762ActiveIndividual· Anesthesiology, Pain Medicine· Fullerton, CA
Anesthesiology, Pain Medicine (MD) in Fullerton, California, trained at University of Southern California Keck School of Medicine (class of 2000). 262 Medicare patients in 2024, $129,362 paid; nearly all of their 2,396 Part D prescriptions were generic (97%). Vertex Pharmaceuticals Incorporated was the largest of 4 companies reporting payments in 2025, $97.32 in all, mostly food and beverage.
Overview
| NPI | 1629011762 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Nov 5, 2021 |
| Certified by provider | Nov 5, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology, Pain Medicine Primary | 207LP2900X | A82916 | CA |
| Anesthesiology | 207L00000X | A82916 | 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 - Interventional Pain Management (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 262 |
|---|---|
| Services billed | 3,651 across 33 procedure codes |
| Paid by Medicare | $129,362 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,396 · 2,560 30-day fills |
|---|---|
| Patients | 411 |
| Total drug cost | $76,883 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Interventional Pain Management |
| Secondary specialties | Anesthesiology |
| Telehealth | Offers telehealth |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence St. Jude Medical CenterFullerton, CA
Industry payments (Open Payments)
- 2025$97.32 · 4 payments from 4 companies
- 2024$135.13 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $34.49 | 1 |
| Boston Scientific Corporation | $25.61 | 1 |
| Janssen Biotech, Inc. | $21.07 | 1 |
| Curonix LLC | $16.15 | 1 |
What the 2025 payments were for
- Food and Beverage$97.32 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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