What is Marnie Shimizu's NPI number?

Marnie Shimizu's National Provider Identifier (NPI) is 1093659054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marnie Shimizu's specialty?

Marnie Shimizu is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).

Where is Marnie Shimizu located?

Marnie Shimizu's practice location on file with NPPES is 4688 Ontario Mills Pkwy, Ontario, CA 91764-5104.

What is Marnie Shimizu's phone number?

The practice phone number listed in the NPPES registry for Marnie Shimizu is (714) 834-1111.

Is Marnie Shimizu's NPI active?

Yes — Marnie Shimizu's NPI (1093659054) is active in the NPPES registry as of the last update on 2026-04-17.

IndividualActive

Marnie Shimizu

NPI 1093659054 · Behavior Analyst · Ontario, CA

Marnie Shimizu is a Behavior Analyst provider in Ontario, CA (NPI 1093659054).

Provider details

NPI number: 1093659054
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior AnalystPrimary103K00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(46/100 index)

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

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
83% 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

4688 Ontario Mills Pkwy

Ontario, CA 91764-5104

Phone: (714) 834-1111

Street-level locationGet directions

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Mailing address