Maria Sierra
NPI 1164126439 · Clinical Psychologist · Los Angeles, CA
Maria Sierra is a Clinical Psychologist provider in Los Angeles, CA (NPI 1164126439).
Provider details
- NPI number
- 1164126439
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- PSB94026911 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% 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
Mailing address
Registry dates
- Enumerated
- 2023-03-29
- Last updated
- 2024-08-27
- Certified
- 2024-08-27
Frequently asked questions
- What is Maria Sierra's NPI number?
- Maria Sierra's National Provider Identifier (NPI) is 1164126439, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Sierra's specialty?
- Maria Sierra is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Maria Sierra located?
- Maria Sierra's practice location on file with NPPES is 1000 N Alameda St Ste 390, Los Angeles, CA 90012-1804.
- What is Maria Sierra's phone number?
- The practice phone number listed in the NPPES registry for Maria Sierra is (213) 804-3139.
- Is Maria Sierra's NPI active?
- Yes — Maria Sierra's NPI (1164126439) is active in the NPPES registry as of the last update on 2024-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.