IndividualActive
Ellyn Del Rosario
NPI 1558998526 · Behavior Technician · Ontario, CA
Ellyn Del Rosario is a Behavior Technician provider in Ontario, CA (NPI 1558998526).
Provider details
- NPI number
- 1558998526
- 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
Established profile(58/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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.
Practice location
1500 S Haven Ave Ste 250
Ontario, CA 91761-2973
Phone: (909) 749-5204
Street-level locationGet directions
Mailing address
1500 S Haven Ave Ste 250
Ontario, CA 91761-2973
Registry dates
- Enumerated
- 2020-03-26
- Last updated
- 2020-03-26
- Certified
- 2020-03-26
Frequently asked questions
- What is Ellyn Del Rosario's NPI number?
- Ellyn Del Rosario's National Provider Identifier (NPI) is 1558998526, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellyn Del Rosario's specialty?
- Ellyn Del Rosario is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).
- Where is Ellyn Del Rosario located?
- Ellyn Del Rosario's practice location on file with NPPES is 1500 S Haven Ave Ste 250, Ontario, CA 91761-2973.
- What is Ellyn Del Rosario's phone number?
- The practice phone number listed in the NPPES registry for Ellyn Del Rosario is (909) 749-5204.
- Is Ellyn Del Rosario's NPI active?
- Yes — Ellyn Del Rosario's NPI (1558998526) is active in the NPPES registry as of the last update on 2020-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.