Quick answers
- Does Rachel S. Williamson accept Medicare assignment?
- Yes. Medicare's clinician data says Rachel S. Williamson 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 Rachel S. Williamson see?
- In 2024, CMS data shows 324 Original Medicare patients and 840 services for Rachel S. Williamson. This counts Original Medicare only and measures volume, not quality.
- What is Rachel S. Williamson's NPI number?
- 1851877641. 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 Rachel S. Williamson, 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 | 324 |
|---|---|
| Services billed to Medicare | 840 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)327 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)224 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)97 services
- Insertion of needle into vein for collection of blood sample (36415)62 services
- Blood test, basic group of blood chemicals (calcium, total) (80048)39 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%
- Atrial fibrillation64%
- Ischemic heart disease58%
- Heart failure50%
- Arthritis45%
Practice locations
Addresses where Rachel S. Williamson is enrolled with Medicare (CMS data updated October 2, 2026).
- 700 NE 87th AveVancouver, WA 98664 (360) 882‑2778
Group practices
Medicare enrollment lists Rachel S. Williamson as a member of this group (CMS data updated October 2, 2026).
- The Vancouver Clinic Inc PS590 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Vancouver
Clinicians with the same Medicare primary specialty in Vancouver, WA — not a recommendation.
Other clinicians in The Vancouver Clinic Inc PS
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) | 1851877641 |
| 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
- 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