Quick answers
- Does Andrea M. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Andrea M. Williams accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Andrea M. Williams see?
- In 2024, CMS data shows 50 Original Medicare patients and 51 services for Andrea M. Williams. This counts Original Medicare only and measures volume, not quality.
- What is Andrea M. Williams's NPI number?
- 1639957871. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Andrea M. Williams, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 50 |
|---|---|
| Services billed to Medicare | 51 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Replacement of knee joint, both sides of knee (27447)31 services
- Replacement of thigh bone and hip joint with prosthesis (27130)15 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Arthritis75%
- High blood pressure72%
- Osteoporosis28%
- Diabetes24%
- Depression22%
Hospitals where Andrea M. Williams works
Medicare's Facility Affiliation Data lists Andrea M. Williams at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Centura Health-St Anthony North Health CampusWestminster, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060104
Practice locations
Addresses where Andrea M. Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 2490 W 26th Ave, Suite 220aDenver, CO 80211 (720) 694‑8686
- 9005 Grant StThornton, CO 80229 (303) 287‑2800
Group practices
Medicare enrollment lists Andrea M. Williams as a member of these groups (CMS data updated October 2, 2026).
- Select Physical Therapy of West Denver Limited Partnership548 clinicians in the group
- Center for Spine and Orthopedics Inc28 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Denver
Clinicians with the same Medicare primary specialty in Denver, CO — not a recommendation.
Other clinicians in Select Physical Therapy of West Denver Limited Partnership
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639957871 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians