NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Katherine Anne Williams, M.D.

Diagnostic Radiology Physician in Honolulu, HI · enumerated 2010.

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

National Provider Identifier

1689987984

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Katherine Anne Williams
Credential M.D.
Sex Female
Practice address 1380 Lusitana St Ste 1007a, Honolulu, HI, 96813
Enumeration date Jul 15, 2010
Last updated in NPPES Aug 4, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 125057864 (IL) Secondary
2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 173890 (NC) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Katherine Williams?
The National Provider Identifier (NPI) for Katherine Williams is 1689987984, a Type 1 (individual) record in the CMS NPPES registry.
Where does Katherine Williams practice?
The practice location on file with NPPES is in Honolulu, HI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-04.