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

Dr. Diane Demarco

Psychologist in Gladwyne, PA · enumerated 2016.

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

National Provider Identifier

1992162333

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Registry record

Entity type Individual (Type 1)

Name Dr. Diane Demarco

Sex Female

Practice address Gladwyne, PA, 19035

Phone (610) 420-5900

Enumeration date Jan 15, 2016

Last updated in NPPES Jan 15, 2016

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

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PS006191L (PA) 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.

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Frequently asked questions

Where does Diane Demarco practice?

The practice location on file with NPPES is in Gladwyne, PA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Diane Demarco?

The National Provider Identifier (NPI) for Diane Demarco is 1992162333, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-15.