NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Eileen Reilly Diaz, P.T., R.N.

Physical Therapist in Upper Montclair, NJ · enumerated 2008.

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

National Provider Identifier

1376710012

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Registry record

Entity type Individual (Type 1)
Name Ms. Eileen Reilly Diaz
Credential P.T., R.N.
Sex Female
Practice address Upper Montclair, NJ, 07043
Phone (973) 744-1680
Fax (973) 655-0971
Enumeration date May 12, 2008
Last updated in NPPES May 12, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 40QA00498800 (NJ) Primary
2251H1300X Human Factors Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 40QA00498800 (NJ) Secondary
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.

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Frequently asked questions

What is the NPI number for Eileen Diaz?
The National Provider Identifier (NPI) for Eileen Diaz is 1376710012, a Type 1 (individual) record in the CMS NPPES registry.
Where does Eileen Diaz practice?
The practice location on file with NPPES is in Upper Montclair, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-12.