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

Hillary Stern, LCSW

Clinical Social Worker in Mansfield Center, CT · enumerated 2007.

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

National Provider Identifier

1366593865

Verified

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Registry record

Entity type Individual (Type 1)

Name Hillary Stern

Credential LCSW

Sex Female

Practice address Mansfield Center, CT, 06250

Phone (860) 208-8519

Fax (860) 429-2227

Enumeration date Jan 13, 2007

Last updated in NPPES Nov 2, 2009

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 006032 (CT) Primary

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

Other identifiers

Identifier	Type	State	Issuer
7306143	Other	CT	AETNA
140006032CT01	Other	-	ANTHEM CENTURY - PPO PRODUCTS
004267416	Medicaid	CT	-
140006032CT01	Other	CT	ANTHEM BLUE CARE
395038	Other	CT	HEALTHNET MHN

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 1366593865 active?

Yes, as of the latest NPPES snapshot, NPI 1366593865 is active (record last updated 2009-11-02).

How do I verify Hillary Stern's NPI record?

Cross-check NPI 1366593865 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 2009-11-02.