Quick answers
- Does Karen R. Walker accept Medicare assignment?
- Yes. Medicare's clinician data says Karen R. Walker 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 Karen R. Walker see?
- In 2024, CMS data shows 34 Original Medicare patients and 61 services for Karen R. Walker. This counts Original Medicare only and measures volume, not quality.
- What is Karen R. Walker's NPI number?
- 1134883010. 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 Karen R. Walker, 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 | 34 |
|---|---|
| Services billed to Medicare | 61 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Hemoglobin a1c level (83036)26 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%
- High blood pressure71%
- Diabetes44%
- Arthritis38%
- Anxiety38%
- Depression35%
Hospitals where Karen R. Walker works
Medicare's Facility Affiliation Data lists Karen R. Walker 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.
- Sierra Nevada Memorial HospitalGrass Valley, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050150
- Sutter Auburn Faith HospitalAuburn, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050498
- Sutter Medical Center, SacramentoSacramento, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050108
Practice locations
Addresses where Karen R. Walker is enrolled with Medicare (CMS data updated October 2, 2026).
- 2203 Plaza Dr, Suite 110Rocklin, CA 95765 (916) 938‑2531
- 3250 Fortune CtAuburn, CA 95602 (916) 938‑2531
- PO BoxDownieville, CA 95936
- PO Box, Suite 286Downieville, CA 95936
Group practices
Medicare enrollment lists Karen R. Walker as a member of these groups (CMS data updated October 2, 2026).
- Western Sierra Medical Clinic Inc36 clinicians in the group
- Chacon BNK PC6 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Rocklin
Clinicians with the same Medicare primary specialty in Rocklin, CA — not a recommendation.
Other clinicians in Western Sierra Medical Clinic Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1134883010 |
| 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