Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christiana Mills, LCSW

Social Worker in New Haven, CT · enumerated 2006.

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

National Provider Identifier

1689694432

Verified

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Registry record

Entity type Individual (Type 1)

Name Christiana Mills

Credential LCSW

Sex Female

Practice address 800 Howard Ave, Yale Physicians Bldg, New Haven, CT, 06519

Phone (203) 785-2140

Fax (203) 785-6414

Enumeration date Jul 21, 2006

Last updated in NPPES May 12, 2025

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 004934 (CT) Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 004934 (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

What is the NPI number for Christiana Mills?

The National Provider Identifier (NPI) for Christiana Mills is 1689694432, a Type 1 (individual) record in the CMS NPPES registry.

Where does Christiana Mills practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-12.