Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sonja J. Serwold, PT
Physical Therapist in Edmonds, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1437253457
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Registry record
Entity type Individual (Type 1)
Name Sonja J. Serwold
Credential PT
Sex Female
Practice address 100 2nd Ave S, Ste 160, Edmonds, WA, 98020
Phone (206) 601-6084
Fax (425) 385-0988
Enumeration date Sep 11, 2006
Last updated in NPPES Feb 25, 2022
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT00008705 (WA) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation.
About the PT 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
Is NPI 1437253457 active?
Yes, as of the latest NPPES snapshot, NPI 1437253457 is active (record last updated 2022-02-25).
How do I verify Sonja Serwold's NPI record?
Cross-check NPI 1437253457 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-25.