Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Julianne Byun, MD

Obstetrics & Gynecology Physician in Honolulu, HI · enumerated 2024.

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

National Provider Identifier

1285489807

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Registry record

Entity type Individual (Type 1)

Name Julianne Byun

Credential MD

Sex Female

Practice address 1319 Punahou St Fl 8, Honolulu, HI, 96826

Phone (808) 983-6000

Enumeration date Apr 18, 2024

Last updated in NPPES Nov 24, 2025

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License MDR-8737 (HI) 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

Where does Julianne Byun 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 Julianne Byun?

The National Provider Identifier (NPI) for Julianne Byun is 1285489807, 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 2025-11-24.