Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Kathryn Dayharsh, PT, DPT
Physical Therapist in Sunnyvale, CA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659101889
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Registry record
Entity type Individual (Type 1)
Name Kathryn Dayharsh
Credential PT, DPT
Sex Female
Practice address 189 W El Camino Real, Sunnyvale, CA, 94087
Phone (408) 222-8454
Enumeration date Aug 2, 2024
Last updated in NPPES Aug 2, 2024
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 306400 (CA) 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 1659101889 active?
Yes, as of the latest NPPES snapshot, NPI 1659101889 is active (record last updated 2024-08-02).
How do I verify Kathryn Dayharsh's NPI record?
Cross-check NPI 1659101889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-02.