Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Cynthia R Mayer, PH.D.
Family Psychologist in Westport, CT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1164643912
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Registry record
Entity type Individual (Type 1)
Name Dr. Cynthia R Mayer
Credential PH.D.
Sex Female
Practice address 544 Riverside Avenue, Westport, CT, 06880
Phone (203) 247-4669
Fax (203) 226-9837
Enumeration date May 1, 2007
Last updated in NPPES Sep 11, 2025
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 001997 (CT) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 007625-1 (NY) Secondary
103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License 001997 (CT) Secondary
103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License 007625-1 (NY) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD 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.
Frequently asked questions
What is the NPI number for Cynthia Mayer?
The National Provider Identifier (NPI) for Cynthia Mayer is 1164643912, a Type 1 (individual) record in the CMS NPPES registry.
Where does Cynthia Mayer practice?
The practice location on file with NPPES is in Westport, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.