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

Susan Margaret O'Brien, LICSW

Clinical Social Worker in Duxbury, MA · enumerated 2006.

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

National Provider Identifier

1467552083

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Registry record

Entity type Individual (Type 1)

Name Susan Margaret O'Brien

Credential LICSW

Sex Female

Practice address Duxbury, MA, 02332

Phone (617) 645-0973

Enumeration date Sep 24, 2006

Last updated in NPPES Dec 28, 2012

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 112102 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
495332	Other	MA	TUFTS HEALTH PLAN
1467552083	Other	MA	MEDICARE PART B
P08630	Other	MA	BLUE CROSS
1070420	Other	MA	NEIGHBORHOOD HEALTH PLAN

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

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.

What specialty is Susan O'Brien?

Susan O'Brien 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-28.