Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Thomas Maclay III, PT, MS
Physical Therapist in Blaine, WA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821125568
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Registry record
Entity type Individual (Type 1)
Name Thomas Maclay III
Credential PT, MS
Sex Male
Practice address 1733 H St Ste 400, Blaine, WA, 98230
Phone (360) 332-5111
Fax (360) 332-3444
Enumeration date Feb 28, 2007
Last updated in NPPES Sep 22, 2026
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0274541 (NY) Secondary
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5555 (OR) Secondary
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 040.0087580 (VT) Secondary
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT.PT.70083240 (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
How do I verify Thomas Maclay's NPI record?
Cross-check NPI 1821125568 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1821125568 active?
Yes, as of the latest NPPES snapshot, NPI 1821125568 is active (record last updated 2026-09-22).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-09-22.