Sierra Lopez
NPI 1174046742 · Social Worker · Fairfield, CA
Sierra Lopez is a Social Worker provider in Fairfield, CA (NPI 1174046742).
Provider details
- NPI number
- 1174046742
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 114537 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Mailing address
Additional practice locations (2)
- 2310 1st StNapa, CA 94559-2239Phone: (707) 224-8266
- 2300 Northpoint PkwySanta Rosa, CA 95407-5004Phone: (707) 224-8266
Registry dates
- Enumerated
- 2017-07-25
- Last updated
- 2023-10-09
- Certified
- 2023-10-03
Frequently asked questions
- What is Sierra Lopez's NPI number?
- Sierra Lopez's National Provider Identifier (NPI) is 1174046742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sierra Lopez's specialty?
- Sierra Lopez is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Sierra Lopez located?
- Sierra Lopez's practice location on file with NPPES is 4820 Business Center Dr Ste 210, Fairfield, CA 94534-1696.
- What is Sierra Lopez's phone number?
- The practice phone number listed in the NPPES registry for Sierra Lopez is (707) 224-8266.
- Is Sierra Lopez's NPI active?
- Yes — Sierra Lopez's NPI (1174046742) is active in the NPPES registry as of the last update on 2023-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.