WHITEHORSE FAMILY MEDICINE
NPI 1134460959
Family Medicine in Arlington, WA
About Whitehorse Family Medicine NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WHITEHORSE FAMILY MEDICINE (NPI 1134460959) is a healthcare organization registered as a family medicine in Arlington, Washington and active in the NPI registry since March 2013. The organization lists Kimberly K Holstein, Director Pfs, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Whitehorse Family Medicine is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
90Medicare enrollment records show 90 clinicians reassign Medicare billing to Whitehorse Family Medicine, which bills Medicare for the services they deliver. Of these, 13 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 21
Nearest to this location (20)
See all 90Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Western Washington Medical Group, Inc Ps's NPI number?
The NPI number for Western Washington Medical Group, Inc Ps is 1134460959. It was assigned to this organization in the NPPES registry on March 4, 2013. The provider is doing business as Whitehorse Family Medicine.
Where is Western Washington Medical Group, Inc Ps located?
Western Washington Medical Group, Inc Ps is located at 875 Wesley St Suite 250, Arlington, WA 98223. The listed phone number is (425) 259-4041.
What is Western Washington Medical Group, Inc Ps's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Western Washington Medical Group, Inc Ps enrolled in Medicare?
Yes. Western Washington Medical Group, Inc Ps is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Western Washington Medical Group, Inc Ps?
According to the CMS Revalidation Reassignment List (October 2026 release), 90 clinicians in 21 Medicare specialties reassign their Medicare billing to Western Washington Medical Group, Inc Ps. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (23), Family Practice (11) and Pulmonary Disease (9). Of these, 13 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Western Washington Medical Group, Inc Ps accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Western Washington Medical Group, Inc Ps as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Western Washington Medical Group, Inc Ps was last updated on February 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Whitehorse Family Medicine · NPI 1134460959
Family Medicine organization in Arlington, Washington. Organization record, active in the CMS NPPES registry since March 4, 2013.
## Identity
- **NPI:** 1134460959 (Entity type: Organization)
- **Enumerated:** March 4, 2013
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Legal business name:** Western Washington Medical Group, Inc Ps
- **Organization subpart:** Yes (part of Western Washington Medical Group, Inc, Ps)
- **Authorized official:** Kimberly Holstein, DIRECTOR PFS
## Practice location
- **Address:** 875 WESLEY ST, SUITE 250, Arlington, WA 98223-1613
- **Phone:** (425) 259-4041
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 90 clinicians in 21 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (23), Family Practice (11), Pulmonary Disease (9); 13 practice within 10 miles; [full list](https://npiprofile.com/npi/1134460959/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 23, 2016
---
Source: [NPI Profile](https://npiprofile.com/npi/1134460959) · Data from the CMS NPPES public registry.