1. Home
  2. Directory
  3. Washington
  4. Richland
  5. Internal Medicine
  6. NPI Profile

PNW ARTHRITIS AND RHEUMATOLOGY PLLC
NPI 1861285074
Internal Medicine - Rheumatology in Richland, WA

Active since May 28, 2025
1305 FOWLER ST STE 1D, RICHLAND, WA 99352(509) 528-1866 Get Directions Write a Review

NPPES record last updated: September 18, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 18, 2025, May 28, 2025 (2 updates tracked since 2025).

About Pnw Arthritis And Rheumatology Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PNW ARTHRITIS AND RHEUMATOLOGY PLLC (NPI 1861285074) is a healthcare organization registered as a rheumatology in Richland, Washington and active in the NPI registry since May 2025. The organization lists Derek Peacock, Co Owner, as its authorized official.

NPPES Registry Identity

NPI1861285074
Entity TypeOrganization
Primary Taxonomy207RR0500X
Legal Business NamePNW ARTHRITIS AND RHEUMATOLOGY PLLC
Location Address1305 FOWLER ST STE 1DRichland, WA 99352-4719
Mailing Address1305 Fowler St Ste 1dRichland, WA 99352-4719 · (509) 942-2284
Phone(509) 528-1866
Organization SubpartNo
Authorized OfficialDerek PeacockCo Owner · (509) 528-1866
Enumeration DateMay 28, 2025
Last NPPES UpdateSeptember 18, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 18, 2025
✔ NPI 1861285074 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
1305 FOWLER ST STE 1D, Richland, WA 99352
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.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)

Pnw Arthritis And Rheumatology Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Pnw Arthritis And Rheumatology PLLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Derek Peacock, MD
Rheumatology
NPI 1720085038
1305 FOWLER ST STE 1D
Richland, WA 99352
(509) 940-2284
✔ PECOS✔ Accepts MedicareSame address
Mandy Schiefelbein, ARNP
Nurse Practitioner
NPI 1043449309
1305 FOWLER ST STE 1D
Richland, WA 99352
(509) 940-2284
✔ PECOS✔ Accepts MedicareSame address

Source: 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 Pnw Arthritis And Rheumatology PLLC's NPI number?

The NPI number for Pnw Arthritis And Rheumatology PLLC is 1861285074. It was assigned to this organization in the NPPES registry on May 28, 2025.

Where is Pnw Arthritis And Rheumatology PLLC located?

Pnw Arthritis And Rheumatology PLLC is located at 1305 Fowler St Ste 1D, Richland, WA 99352. The listed phone number is (509) 528-1866.

What is Pnw Arthritis And Rheumatology PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Pnw Arthritis And Rheumatology PLLC enrolled in Medicare?

Yes. Pnw Arthritis And Rheumatology PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Pnw Arthritis And Rheumatology PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Pnw Arthritis And Rheumatology PLLC, in Nurse Practitioner and Rheumatology. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Pnw Arthritis And Rheumatology PLLC accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Pnw Arthritis And Rheumatology PLLC 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 Pnw Arthritis And Rheumatology PLLC was last updated on September 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.