What is Masami Ohnui's NPI number?

Masami Ohnui's National Provider Identifier (NPI) is 1255643037, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Masami Ohnui's specialty?

Masami Ohnui is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).

Where is Masami Ohnui located?

Masami Ohnui's practice location on file with NPPES is Po Box 592, Guerneville, CA 95446-0592.

What is Masami Ohnui's phone number?

The practice phone number listed in the NPPES registry for Masami Ohnui is (707) 799-5488.

Is Masami Ohnui's NPI active?

Yes — Masami Ohnui's NPI (1255643037) is active in the NPPES registry as of the last update on 2025-07-28.

IndividualActive

Masami Ohnui, PSYD

NPI 1255643037 · Clinical Psychologist · Guerneville, CA

Masami Ohnui, PSYD is a Clinical Psychologist provider in Guerneville, CA (NPI 1255643037).

Provider details

NPI number: 1255643037
Entity type: Individual
Primary specialty: Clinical PsychologistBehavioral Health & Social Service Providers
Credential: PSYD
Sex: Female
Sole proprietor: No
License: PSY34946 (CA)

Specialties & taxonomies

Clinical PsychologistPrimary103TC0700XLicense PSY34946 (CA)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(83/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
15 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

Po Box 592

Guerneville, CA 95446-0592

Phone: (707) 799-5488

Approximate (ZIP-level) locationGet directions

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Mailing address