Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marie-Anne M Leinhaas, LCSW

Clinical Social Worker in Westerly, RI · enumerated 2007.

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

National Provider Identifier

1437287638

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Registry record

Entity type Individual (Type 1)

Name Marie-Anne M Leinhaas

Credential LCSW

Sex Female

Practice address 11 Wells St, Suite # 8, Westerly, RI, 02891

Phone (401) 596-4769

Fax (401) 596-4276

Enumeration date Mar 1, 2007

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License ISW00979 (RI) 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
2078441	Other	-	CIGNA BEHAVORIAL HEALTH
119174	Other	-	UHC (FIDELITY INVESTMENT)
331225	Other	-	MHN
447142	Other	-	TUFTS
140000979RI01	Other	-	ANTHEM BCBS
410238	Other	-	BLUE CHIP
NV366	Other	-	EMPIRE BCBS, NY
1021090	Other	-	BEACON HEALTH STATEGIES
455367	Other	-	TRICARE
62-21669	Other	-	UNITED HEALTH CARE SERV.
455367	Other	-	VALUE OPTIONS
20746-001	Other	-	BCBSRI
344561	Other	-	MAGELLAN BEH. HEALTH
455367	Other	-	PHS (HEALTH NET)
7922211	Other	-	AETNA
RI2319	Other	-	HEALTHNET
455367	Other	-	HEALTHNET (BRIDGEPORT)
ML41956	Medicaid	RI	-

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.

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Frequently asked questions

What specialty is Marie-Anne Leinhaas?

Marie-Anne Leinhaas 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.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.