Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

MARISSA CASILLAS
NPI 1588586606
Behavior Technician in Denver, CO

Active since July 29, 2026
1560 BROADWAY STE 1600, DENVER, CO 80202(626) 339-4999 Get Directions Write a Review

NPPES record added: July 29, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Marissa Casillas NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARISSA CASILLAS (NPI 1588586606) is an individual behavior technician in Denver, Colorado and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1588586606
Entity TypeIndividualFemale
Primary Taxonomy106S00000X
Provider Legal NameMARISSA CASILLAS
Location Address1560 BROADWAY STE 1600Denver, CO 80202-5160
Mailing Address1560 Broadway Ste 1600Denver, CO 80202-5160 · (626) 339-4999
Sole ProprietorNo
Enumeration DateJuly 29, 2026
NPPES CertifiedJuly 29, 2026
NPI 1588586606 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyBehavior TechnicianBehavioral Health & Social Service Providers
Taxonomy Code106S00000X
Definition
The behavior technician is a paraprofessional who practices under the close, ongoing supervision of a behavior analyst or assistant behavior analyst certified by the Behavior Analyst Certification Board and/or credentialed by a state (such as through licensure). The behavior technician is primarily responsible for the implementation of components of behavior-analytic treatment plans developed by the supervisor. That may include collecting data on treatment targets and conducting certain types of behavioral assessments (e.g., stimulus preference assessments). The behavior technician does not design treatment or assessment plans or procedures but provides services as assigned by the supervisor responsible for his or her work.
1560 BROADWAY STE 1600, Denver, CO 80202

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Behavior Technician
1560 BROADWAY STE 1600
DENVER, CO 80202
Behavior Technician
1560 BROADWAY STE 1600
DENVER, CO 80202
Behavior Technician
1560 BROADWAY STE 1600
DENVER, CO 80202
Behavior Technician
1560 BROADWAY STE 1600
DENVER, CO 80202
Behavior Technician
1560 BROADWAY STE 1600
DENVER, CO 80202
Clinic/Center (Multi-Specialty)
1560 BROADWAY STE 1600
DENVER, CO 80202
Behavior Technician
1560 BROADWAY STE 1600
DENVER, CO 80202
Physician Assistant (Medical)
1560 BROADWAY STE 1600
DENVER, CO 80202

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marissa Casillas's NPI number?

The NPI number for Marissa Casillas is 1588586606. It was assigned to this individual provider in the NPPES registry on July 29, 2026.

Where is Marissa Casillas located?

Marissa Casillas practices at 1560 Broadway Ste 1600, Denver, CO 80202. The listed phone number is (626) 339-4999.

What is Marissa Casillas's specialty?

The primary specialty registered for this NPI is Behavior Technician with taxonomy code 106S00000X.

When was this NPI record last updated?

The NPPES record for Marissa Casillas was last updated on July 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.