Grant P. Williams, M.D.
NPI 1013055128ActiveIndividual· Pain Medicine, Interventional Pain Medicine· Glendale, CA
Pain Medicine, Interventional Pain Medicine (M.D.) in Glendale, California, licensed in CA, with an NPI issued in February 2007. Their prescriptions cost Medicare Part D more than their services did: $702,729 for 2,513 claims, against $59,340 paid for services in 2024. Boston Scientific Corporation was the largest of 3 companies reporting payments in 2025, $369.39 in all, mostly food and beverage.
Overview
| NPI | 1013055128 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 1, 2007 |
| Last updated in NPPES | Aug 19, 2026 |
| Certified by provider | Aug 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pain Medicine, Interventional Pain Medicine Primary | 208VP0014X | A54235 | 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 - Interventional Pain Management (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 56 |
|---|---|
| Services billed | 609 across 2 procedure codes |
| Paid by Medicare | $59,340 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,513 · 2,620 30-day fills |
|---|---|
| Patients | 119 |
| Total drug cost | $702,729 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Interventional Pain Management |
| Secondary specialties | Anesthesiology, Pain Management |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$369.39 · 6 payments from 3 companies
- 2024$16.76 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $206.35 | 4 |
| Heron Therapeutics, Inc. | $120.25 | 1 |
| Becton, Dickinson and Company | $42.79 | 1 |
What the 2025 payments were for
- Food and Beverage$369.39 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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