NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Dorothy M Iwanski, D.O.

Hospitalist Physician in Honolulu, HI · enumerated 2006.

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

National Provider Identifier

1184738957

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Registry record

Entity type Individual (Type 1)
Name Dr. Dorothy M Iwanski
Credential D.O.
Sex Female
Practice address Honolulu, HI, 96813
Phone (808) 691-1000
Enumeration date Aug 18, 2006
Last updated in NPPES Jun 9, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License OS9437 (FL) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License OS9437 (FL) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License DOS-2103 (HI) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
U5832T Other FL MEDICARE
273606300 Medicaid FL -

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

Where does Dorothy Iwanski practice?
The practice location on file with NPPES is in Honolulu, HI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dorothy Iwanski?
The National Provider Identifier (NPI) for Dorothy Iwanski is 1184738957, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-09.