Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Margaret Keenan, PHD
Psychologist in Wilmington, DE · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447235197
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Registry record
Entity type Individual (Type 1)
Name Margaret Keenan
Credential PHD
Sex Female
Practice address 3506 Kennett Pike, Wilmington, DE, 19807
Phone (302) 661-3408
Enumeration date Dec 14, 2005
Last updated in NPPES Jun 20, 2008
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License B10000491 (DE) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD 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.
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 Margaret Keenan?
Margaret Keenan is registered in NPPES with the primary taxonomy of Psychologist. 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 2008-06-20.