Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary G Stephen, LICSW

Clinical Social Worker in Great Barrington, MA · enumerated 2006.

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

National Provider Identifier

1013093608

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary G Stephen

Credential LICSW

Sex Female

Practice address 4 West Road, Great Barrington, MA, 01230

Phone (413) 528-5034

Enumeration date Oct 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 004070 (CT) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 1027673 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
140004070CT03	Other	CT	ANTHEM BCBS
375424	Other	-	MAGELLAN BEHAV HEALTH
P07685	Other	MA	BLUE CROSS BLUE SHIELD
P22241	Other	MA	MEDICARE
00PNA	Other	-	MBH PARTNERSHIP
000000025418	Other	-	BMC HEALTHNET
00419326	Other	-	CT BEHAV HLTH PARTNERSHIP
218483	Other	-	MHN HMC
P2111426	Other	-	OXFORD

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 specialty is Mary Stephen?

Mary Stephen is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.