Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Diane J Mcquillen, MSW
Social Worker in Beaver, PA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1982699377
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Registry record
Entity type Individual (Type 1)
Name Ms. Diane J Mcquillen
Credential MSW
Sex Female
Practice address 219 3rd St, Beaver, PA, 15009
Phone (724) 775-9150
Fax (724) 775-9153
Enumeration date Sep 13, 2005
Last updated in NPPES May 19, 2022
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License SW003015E (PA) Primary
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.
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 Diane Mcquillen?
Diane Mcquillen is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-19.