Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Theodore Simpson, PA
Physician Assistant in Portland, OR · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1144879628
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Registry record
Entity type Individual (Type 1)
Name William Theodore Simpson
Credential PA
Sex Male
Practice address 2230 Nw Pettygrove St Ste 210, Portland, OR, 97210
Phone (503) 223-6223
Enumeration date Sep 8, 2019
Last updated in NPPES Sep 8, 2019
Taxonomy & licenses
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA credential
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 William Simpson's NPI record?
Cross-check NPI 1144879628 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1144879628 active?
Yes, as of the latest NPPES snapshot, NPI 1144879628 is active (record last updated 2019-09-08).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-08.