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Merit Psychology Group, A Professional Psychology Corporation

Psychologist in Palo Alto, CA · enumerated 2022 · authorized official Adrienne Difabio, Founder.

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

National Provider Identifier

1740902360

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Registry record

Entity type Organization (Type 2)
Legal business name Merit Psychology Group, A Professional Psychology Corporation
Practice address 2439 Birch St Ste 8, Palo Alto, CA, 94306
Phone (650) 960-5150
Fax (510) 443-1369
Enumeration date Sep 12, 2022
Last updated in NPPES Sep 12, 2022

Taxonomy & classification

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

Authorized official

Name Adrienne Difabio
Title Founder
Phone (650) 960-5150

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 Merit Psychology Group, A Professional Psychology Corporation?
The NPI for Merit Psychology Group, A Professional Psychology Corporation is 1740902360, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Merit Psychology Group, A Professional Psychology Corporation?
NPPES lists Adrienne Difabio (Founder) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-12.