Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Naomasa Hase, DO

Obstetrics & Gynecology Physician in Prescott Valley, AZ · enumerated 2014.

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

National Provider Identifier

1841610961

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Registry record

Entity type Individual (Type 1)

Name Naomasa Hase

Credential DO

Sex Male

Practice address 7700 E Florentine Rd, Prescott Valley, AZ, 86314

Phone (928) 445-2700

Enumeration date Apr 17, 2014

Last updated in NPPES Jul 17, 2025

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 036.146733 (IL) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License OP61416149 (WA) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 89751 (GA) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License T3632 (TX) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 009305 (AZ) 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
100156	Medicaid	AZ	-
2241140	Medicaid	WA	-

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

Is NPI 1841610961 active?

Yes, as of the latest NPPES snapshot, NPI 1841610961 is active (record last updated 2025-07-17).

How do I verify Naomasa Hase's NPI record?

Cross-check NPI 1841610961 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-17.