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

Susan Machanich Williams, LCSW

Psychoanalyst in Norwalk, CT · enumerated 2007.

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

National Provider Identifier

1942410345

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Susan Machanich Williams

Credential LCSW

Sex Female

Practice address Norwalk, CT, 06851

Phone (203) 445-1772

Enumeration date May 23, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

102L00000X Psychoanalyst Behavioral Health & Social Service Providers · License 002151 (CT) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Susan Williams practice?

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

What is the NPI number for Susan Williams?

The National Provider Identifier (NPI) for Susan Williams is 1942410345, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Suzanne Van Vechten Mental Health Counselor · Norwalk, CT NPI 1578640082 Nicholas Heliotis Internal Medicine Physician · Norwalk, CT NPI 1922636158

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