Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory J. Mueller, OD

Optometrist in Waipahu, HI · enumerated 2006.

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

National Provider Identifier

1265527519

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory J. Mueller

Credential OD

Sex Male

Practice address 94-1480 Moaniani St, Waipahu, HI, 96797

Phone (808) 432-3100

Enumeration date Oct 4, 2006

Last updated in NPPES Oct 15, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OD-360 (HI) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
0000207332	Other	HI	HMSA BILLING NUMBER
078594-02	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Gregory Mueller practice?

The practice location on file with NPPES is in Waipahu, HI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Gregory Mueller?

The National Provider Identifier (NPI) for Gregory Mueller is 1265527519, 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 2007-10-15.