Quick answers
- Does Ellana Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Ellana 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.
- What is Ellana Williams's NPI number?
- 1164121984. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ellana Williams works
Medicare's Facility Affiliation Data lists Ellana 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.
- Intermountain Health St. Mary's Regional HospitalGrand Junction, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060023
Practice locations
Addresses where Ellana Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 2440 N 11st StGrand Junction, CO 81501 (970) 243‑0900
Group practices
Medicare enrollment lists Ellana Williams as a member of this group (CMS data updated October 2, 2026).
- Colorado Surgical Affiliates LLC52 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Grand Junction
Clinicians with the same Medicare primary specialty in Grand Junction, CO — not a recommendation.
Other clinicians in Colorado Surgical Affiliates LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164121984 |
| 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
- 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