Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joan W. Koff, PHD

Psychologist in Honolulu, HI · enumerated 2006.

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

National Provider Identifier

1972696797

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Registry record

Entity type Individual (Type 1)

Name Joan W. Koff

Credential PHD

Sex Female

Practice address 1441 Kapiolani Blvd Fl 16, Honolulu, HI, 96814

Phone (808) 432-7600

Enumeration date Oct 2, 2006

Last updated in NPPES Oct 9, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY-101 (HI) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
05251302	Medicaid	HI	-

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 Joan Koff?

Joan Koff 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 2007-10-09.