Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Hailey Mayo, ATC
Athletic Trainer in Seattle, WA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235629213
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Registry record
Entity type Individual (Type 1)
Name Hailey Mayo
Credential ATC
Sex Female
Practice address 515 Minor Ave, Seattle, WA, 98104
Phone (206) 386-9668
Enumeration date May 15, 2018
Last updated in NPPES May 15, 2018
Taxonomy & licenses
2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License AT-525 (ID) 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
Where does Hailey Mayo practice?
The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Hailey Mayo?
The National Provider Identifier (NPI) for Hailey Mayo is 1235629213, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-15.