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

Mrs. Kathryn Duncan

Marriage & Family Therapist in Manhattan Beach, CA · enumerated 2022 · practices at Rejuvv, P.C..

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

National Provider Identifier

1255053807

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Registry record

Entity type Individual (Type 1)

Name Mrs. Kathryn Duncan

Sex Female

Practice address Manhattan Beach, CA, 90266

Phone (747) 277-4579

Enumeration date Sep 12, 2022

Last updated in NPPES May 26, 2026

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 155644 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Kathryn Duncan practice?

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

What is the NPI number for Kathryn Duncan?

The National Provider Identifier (NPI) for Kathryn Duncan is 1255053807, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Rejuvv, P.C. Adult Mental Health Clinic/Center · Manhattan Beach, CA NPI 1992452551

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-26.