What is Cristal Sierra's NPI number?

Cristal Sierra's National Provider Identifier (NPI) is 1164395695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Cristal Sierra's specialty?

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

Where is Cristal Sierra located?

Cristal Sierra's practice location on file with NPPES is 4401 Crenshaw Blvd Ste 215, Los Angeles, CA 90043-1200.

What is Cristal Sierra's phone number?

The practice phone number listed in the NPPES registry for Cristal Sierra is (323) 291-7100.

Is Cristal Sierra's NPI active?

Yes — Cristal Sierra's NPI (1164395695) is active in the NPPES registry as of the last update on 2025-09-29.

IndividualActive

Cristal Sierra

NPI 1164395695 · Behavior Technician · Los Angeles, CA

Cristal Sierra is a Behavior Technician provider in Los Angeles, CA (NPI 1164395695).

Provider details

NPI number: 1164395695
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(47/100 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

4401 Crenshaw Blvd Ste 215

Los Angeles, CA 90043-1200

Phone: (323) 291-7100

Street-level locationGet directions

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Mailing address