Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Barbara J Clark, R.N.

Registered Nurse in Attleboro, MA · enumerated 2007.

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

National Provider Identifier

1942483599

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Registry record

Entity type Individual (Type 1)

Name Barbara J Clark

Credential R.N.

Sex Female

Practice address 25 Forest St, Attleboro, MA, 02703

Phone (508) 226-6035

Fax (508) 222-1877

Enumeration date Dec 6, 2007

Last updated in NPPES Dec 6, 2007

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 135297 (MA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Barbara Clark?

Barbara Clark is registered in NPPES with the primary taxonomy of Registered Nurse. 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 2007-12-06.