IndividualActive
Monica Guillermo
NPI 1558219337 · Behavior Technician · Fullerton, CA
Monica Guillermo is a Behavior Technician provider in Fullerton, CA (NPI 1558219337).
Provider details
- NPI number
- 1558219337
- Entity type
- Individual
- Primary specialty
- Behavior TechnicianBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
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
713 W Commonwealth Ave Ste C
Fullerton, CA 92832-1612
Phone: (714) 879-4274
Street-level locationGet directions
Mailing address
713 W Commonwealth Ave Ste C
Fullerton, CA 92832-1612
Registry dates
- Enumerated
- 2026-03-18
- Last updated
- 2026-03-18
- Certified
- 2026-03-18
Frequently asked questions
- What is Monica Guillermo's NPI number?
- Monica Guillermo's National Provider Identifier (NPI) is 1558219337, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Monica Guillermo's specialty?
- Monica Guillermo is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).
- Where is Monica Guillermo located?
- Monica Guillermo's practice location on file with NPPES is 713 W Commonwealth Ave Ste C, Fullerton, CA 92832-1612.
- What is Monica Guillermo's phone number?
- The practice phone number listed in the NPPES registry for Monica Guillermo is (714) 879-4274.
- Is Monica Guillermo's NPI active?
- Yes — Monica Guillermo's NPI (1558219337) is active in the NPPES registry as of the last update on 2026-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.