IndividualActive
Guillermina Hall
NPI 1811321664 · Social Worker · Ontario, CA
Guillermina Hall is a Social Worker provider in Ontario, CA (NPI 1811321664).
Provider details
- NPI number
- 1811321664
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(71/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
317 W F St
Ontario, CA 91762-3205
Phone: (909) 986-7111
Street-level locationGet directions
Mailing address
10802 Wilson Ave
Alta Loma, CA 91737-2437
Registry dates
- Enumerated
- 2013-08-29
- Last updated
- 2013-08-29
Frequently asked questions
- What is Guillermina Hall's NPI number?
- Guillermina Hall's National Provider Identifier (NPI) is 1811321664, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermina Hall's specialty?
- Guillermina Hall is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Guillermina Hall located?
- Guillermina Hall's practice location on file with NPPES is 317 W F St, Ontario, CA 91762-3205.
- What is Guillermina Hall's phone number?
- The practice phone number listed in the NPPES registry for Guillermina Hall is (909) 986-7111.
- Is Guillermina Hall's NPI active?
- Yes — Guillermina Hall's NPI (1811321664) is active in the NPPES registry as of the last update on 2013-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.