What is Marissa Arellano's NPI number?

Marissa Arellano's National Provider Identifier (NPI) is 1912851742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marissa Arellano's specialty?

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

Where is Marissa Arellano located?

Marissa Arellano's practice location on file with NPPES is 4435 S Eagle Cir, Aurora, CO 80015-1333.

What is Marissa Arellano's phone number?

The practice phone number listed in the NPPES registry for Marissa Arellano is (720) 360-5572.

Is Marissa Arellano's NPI active?

Yes — Marissa Arellano's NPI (1912851742) is active in the NPPES registry as of the last update on 2026-02-26.

IndividualActive

Marissa Arellano

NPI 1912851742 · Behavior Analyst · Aurora, CO

Marissa Arellano is a Behavior Analyst provider in Aurora, CO (NPI 1912851742).

Provider details

NPI number: 1912851742
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: Yes
License: 25-440324 (CO)

Specialties & taxonomies

Behavior AnalystPrimary103K00000XLicense 25-440324 (CO)
Behavioral Health & Social Service Providers

Profile Score

Established profile(53/100 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
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

4435 S Eagle Cir

Aurora, CO 80015-1333

Phone: (720) 360-5572

Street-level locationGet directions

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Mailing address