NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary Ellen Joseph, PTA

Physical Therapy Assistant in Phoenix, AZ · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1588743033

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Mary Ellen Joseph
Credential PTA
Sex Female
Practice address 2423 W Dunlap Ave, Suite 170, Phoenix, AZ, 85021
Fax (602) 870-4141
Enumeration date Nov 3, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 7174A (AZ) Primary

Other identifiers

Identifier Type State Issuer
7174A Other AZ LICENSE

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Mary Ellen Joseph practice?
The practice location on file with NPPES is in Phoenix, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Ellen Joseph?
The National Provider Identifier (NPI) for Mary Ellen Joseph is 1588743033, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.