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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sean O Keenan, M.D.

Molecular Genetic Pathology (Pathology) Physician in Seattle, WA · enumerated 2012.

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

National Provider Identifier

1447519228

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Registry record

Entity type Individual (Type 1)
Name Sean O Keenan
Credential M.D.
Sex Male
Practice address 1124 Columbia St Ste 200, Seattle, WA, 98104
Phone (206) 576-6050
Fax (206) 215-5935
Enumeration date May 14, 2012
Last updated in NPPES Oct 1, 2018

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License MD60855729 (WA) Secondary
207ZP0007X Molecular Genetic Pathology (Pathology) Physician Allopathic & Osteopathic Physicians · License MD60855729 (WA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
2105814 Medicaid WA -

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 is the NPI number for Sean Keenan?
The National Provider Identifier (NPI) for Sean Keenan is 1447519228, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sean Keenan practice?
The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-01.