Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Stephen Diana, Lmft, LLC

Q: What type of organization is Stephen Diana, Lmft, LLC?

Stephen Diana, Lmft, LLC is registered in NPPES as a Marriage & Family Therapist (its primary provider taxonomy).

Marriage & Family Therapist in Quaker Hill, CT · enumerated 2015 · authorized official Stephen Diana, Direct Owner.

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

National Provider Identifier

1831586643

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Registry record

Entity type Organization (Type 2)

Legal business name Stephen Diana, Lmft, LLC

Practice address 52 Upper Bartlett Rd, Quaker Hill, CT, 06375

Phone (860) 389-7329

Enumeration date Apr 20, 2015

Last updated in NPPES Apr 20, 2015

Taxonomy & classification

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 001723 (CT) Primary

Authorized official

Name Stephen Diana

Title Direct Owner

Phone (860) 389-7329

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 type of organization is Stephen Diana, Lmft, LLC?

Stephen Diana, Lmft, LLC is registered in NPPES as a Marriage & Family Therapist (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-20.