Quick answers
- Does Rebecca L. Stillwell accept Medicare assignment?
- Yes. Medicare's clinician data says Rebecca L. Stillwell 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 Rebecca L. Stillwell see?
- In 2024, CMS data shows 71 Original Medicare patients and 264 services for Rebecca L. Stillwell. This counts Original Medicare only and measures volume, not quality.
- What is Rebecca L. Stillwell's NPI number?
- 1639638372. 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 Rebecca L. Stillwell, 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 | 71 |
|---|---|
| Services billed to Medicare | 264 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)59 services
- Hemoglobin a1c level (83036)32 services
- Creatinine level to test for kidney function or muscle injury (82570)23 services
- Urine microalbumin (protein) analysis (82044)21 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)18 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 blood pressure75%
- High cholesterol75%
- Arthritis46%
- Diabetes45%
- Ischemic heart disease31%
- COPD23%
Hospitals where Rebecca L. Stillwell works
Medicare's Facility Affiliation Data lists Rebecca L. Stillwell 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.
- Providence Mount Carmel HospitalColville, WA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 501326
Practice locations
Addresses where Rebecca L. Stillwell is enrolled with Medicare (CMS data updated October 2, 2026).
- 39 Short Cut RdInchelium, WA 99138
- 39 Short Cut Rd, PO Box 290Inchelium, WA 99138
- PO BoxInchelium, WA 99138
- PO Box, 290 39 Short Cut RdInchelium, WA 99138
- PO Box, Suite 290Inchelium, WA 99138
Group practices
Medicare enrollment lists Rebecca L. Stillwell as a member of these groups (CMS data updated October 2, 2026).
- Colville Nation Community Health Centers12 clinicians in the group
- Confederated Tribes of the Colville Reservation9 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Washington
Clinicians with the same Medicare primary specialty in Washington — not a recommendation.
Other clinicians in Colville Nation Community Health Centers
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639638372 |
| 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