Katherine Sieracki
NPI 1336860048 · Social Worker · Los Angeles, CA
Katherine Sieracki is a Social Worker provider in Los Angeles, CA (NPI 1336860048).
Provider details
- NPI number
- 1336860048
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
- Case Manager/Care Coordinator171M00000X
Other Service Providers
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
83% of core fields populated
- Practice footprint23% of score
2 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 (1)
- 21707 Hawthorne Blvd Ste 300Torrance, CA 90503-7016Phone: (310) 543-9900
Registry dates
- Enumerated
- 2022-09-09
- Last updated
- 2024-07-10
- Certified
- 2024-07-10
Frequently asked questions
- What is Katherine Sieracki's NPI number?
- Katherine Sieracki's National Provider Identifier (NPI) is 1336860048, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Sieracki's specialty?
- Katherine Sieracki is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Katherine Sieracki located?
- Katherine Sieracki's practice location on file with NPPES is 500 S San Pedro St, Los Angeles, CA 90013-2102.
- What is Katherine Sieracki's phone number?
- The practice phone number listed in the NPPES registry for Katherine Sieracki is (562) 867-7999.
- Is Katherine Sieracki's NPI active?
- Yes — Katherine Sieracki's NPI (1336860048) is active in the NPPES registry as of the last update on 2024-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.