NPI Portal NPI Lookup & Verification

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

Ms. Ann Susan Brenner, MARRIAGE AND FAMILY

Marriage & Family Therapist in Westport, CT · enumerated 2006.

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

National Provider Identifier

1255348066

Verified

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Registry record

Entity type Individual (Type 1)
Name Ms. Ann Susan Brenner
Credential MARRIAGE AND FAMILY
Sex Female
Practice address Westport, CT, 06880
Phone (203) 226-0464
Fax (203) 226-0464
Enumeration date Aug 2, 2006
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 000432-1 (NY) Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 000486 (CT) Primary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC15135 (CA) Secondary

Other identifiers

Identifier Type State Issuer
11561882 Other CT CAQH
410000486CT01 Other CT ANTHEM BLUE CROSS

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

What is the NPI number for Ann Brenner?
The National Provider Identifier (NPI) for Ann Brenner is 1255348066, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ann Brenner practice?
The practice location on file with NPPES is in Westport, CT. Providers can have multiple locations; NPPES lists the primary practice address.

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