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Sergio Antoniuk, MSW, MPA
NPI 1104939917 · Social Worker · Los Angeles, CA
Sergio Antoniuk, MSW, MPA is a Social Worker provider in Los Angeles, CA (NPI 1104939917).
Provider details
- NPI number
- 1104939917
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, MPA
- Sex
- Male
- Sole proprietor
- No
- License
- ASW 17727 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
351 E Temple St
Los Angeles, CA 90012-3328
Phone: (213) 253-2677
Fax: (213) 253-5172
Street-level locationGet directions
Mailing address
351 E Temple St
Los Angeles, CA 90012-3328
Registry dates
- Enumerated
- 2006-08-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sergio Antoniuk's NPI number?
- Sergio Antoniuk's National Provider Identifier (NPI) is 1104939917, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sergio Antoniuk's specialty?
- Sergio Antoniuk is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Sergio Antoniuk located?
- Sergio Antoniuk's practice location on file with NPPES is 351 E Temple St, Los Angeles, CA 90012-3328.
- What is Sergio Antoniuk's phone number?
- The practice phone number listed in the NPPES registry for Sergio Antoniuk is (213) 253-2677.
- Is Sergio Antoniuk's NPI active?
- Yes — Sergio Antoniuk's NPI (1104939917) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.