Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michael S Patterson, PAC
Physician Assistant in Chewelah, WA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639298268
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Registry record
Entity type Individual (Type 1)
Name Michael S Patterson
Credential PAC
Sex Male
Practice address 500 W Webster, Chewelah, WA, 99109
Phone (509) 935-8211
Enumeration date Mar 28, 2007
Last updated in NPPES Feb 3, 2015
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA10003228 (WA) Primary
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.
Frequently asked questions
How do I verify Michael Patterson's NPI record?
Cross-check NPI 1639298268 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1639298268 active?
Yes, as of the latest NPPES snapshot, NPI 1639298268 is active (record last updated 2015-02-03).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-03.