What is Mariana Guillen's NPI number?

Mariana Guillen's National Provider Identifier (NPI) is 1043875420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mariana Guillen's specialty?

Mariana Guillen is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).

Where is Mariana Guillen located?

Mariana Guillen's practice location on file with NPPES is 1603a S Main St, Milpitas, CA 95035-6261.

What is Mariana Guillen's phone number?

The practice phone number listed in the NPPES registry for Mariana Guillen is (408) 842-2468.

Is Mariana Guillen's NPI active?

Yes — Mariana Guillen's NPI (1043875420) is active in the NPPES registry as of the last update on 2019-05-01.

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Mariana Guillen

NPI 1043875420 · Behavior Technician · Milpitas, CA

Mariana Guillen is a Behavior Technician provider in Milpitas, CA (NPI 1043875420).

Provider details

NPI number: 1043875420
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: Yes

Practice location

1603a S Main St

Milpitas, CA 95035-6261

Phone: (408) 842-2468

Street-level locationGet directions

More CA providers

Mailing address

909 Walnut Ave

Greenfield, CA 93927-4931

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Established profile(60/100 index)

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

Registry tenure38% of score
7 yrs in NPPES 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.

Enumerated: 2019-05-01
Last updated: 2019-05-01

Frequently asked questions

What is Mariana Guillen's NPI number?: Mariana Guillen's National Provider Identifier (NPI) is 1043875420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mariana Guillen's specialty?: Mariana Guillen is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).
Where is Mariana Guillen located?: Mariana Guillen's practice location on file with NPPES is 1603a S Main St, Milpitas, CA 95035-6261.
What is Mariana Guillen's phone number?: The practice phone number listed in the NPPES registry for Mariana Guillen is (408) 842-2468.
Is Mariana Guillen's NPI active?: Yes — Mariana Guillen's NPI (1043875420) is active in the NPPES registry as of the last update on 2019-05-01.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions