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

Ms. Anne Libby, LCSW CASAC NBCCH MA

Clinical Social Worker in Sag Harbor, NY · enumerated 2016.

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

National Provider Identifier

1225589013

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Anne Libby

Credential LCSW CASAC NBCCH MA

Sex Female

Practice address Sag Harbor, NY, 11963

Phone (917) 520-1508

Enumeration date Oct 17, 2016

Last updated in NPPES Oct 17, 2016

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 886496186 (NY) 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

Is NPI 1225589013 active?

Yes, as of the latest NPPES snapshot, NPI 1225589013 is active (record last updated 2016-10-17).

How do I verify Anne Libby's NPI record?

Cross-check NPI 1225589013 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-17.