Andrea Margaret Williams, PA-C
NPI 1639957871ActiveIndividual· Physician Assistant· Thornton, CO
Physician Assistant (PA-C) with Select Physical Therapy of West Denver Limited Partnership and 1 other group, practicing in Thornton, Colorado. Their prescriptions cost Medicare Part D more than their services did: $31,134 for 859 claims, against $7,054 paid for services in 2024. Integra Lifesciences Corporation was the largest of 4 companies reporting payments in 2025, $118.05 in all, mostly food and beverage. Lists Centura Health-St Anthony North Health Campus as a hospital affiliation.
Overview
| NPI | 1639957871 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Sep 19, 2023 |
| Last updated in NPPES | Apr 23, 2026 |
| Certified by provider | Apr 23, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA.0007992 | CO |
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 - Physician Assistant (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 51 across 6 procedure codes |
| Paid by Medicare | $7,054 |
Part D prescriptions in 2024
| Prescriptions (claims) | 859 · 1,057 30-day fills |
|---|---|
| Patients | 269 |
| Total drug cost | $31,134 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- Select Physical Therapy of West Denver Limited PartnershipWoodland Park, CO · 548 clinicians
- Center for Spine and Orthopedics IncThornton, CO · 28 clinicians
Hospital affiliation
- Centura Health-St Anthony North Health CampusWestminster, CO
Industry payments (Open Payments)
- 2025$118.05 · 5 payments from 4 companies
- 2024$210.08 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Integra Lifesciences Corporation | $68.54 | 2 |
| Vertex Pharmaceuticals Incorporated | $20.04 | 1 |
| Depuy Synthes Sales Inc. | $14.74 | 1 |
| Reprise Biomedical, Inc. | $14.73 | 1 |
What the 2025 payments were for
- Food and Beverage$118.05 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Thornton
- 1023762945
- 1073294872
- 1164689519
- 1205442852
- 1295031714
- 1326315961
- 1508958539
- 1528493368
- 1578984456
- 1689293557
- 1750048609
- 1841598547
All 60 physician assistants in Thornton · All physician assistants in Colorado