Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Nicholas S Muff MD Ps

Specialist in Sedro Woolley, WA · enumerated 2006 · authorized official Nicholas Muff, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1245325950

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Nicholas S Muff MD Ps

Practice address 2000 Hospital Dr, Sedro Woolley, WA, 98284

Phone (360) 856-7270

Enumeration date Oct 4, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

174400000X Specialist Other Service Providers · License MD00015015 (WA) Primary

Authorized official

Name Nicholas Muff

Title President

Phone (360) 678-4071

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Nicholas S Muff MD Ps located?

The practice location on file with NPPES is in Sedro Woolley, WA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.