Sergio Antoniuk, MSW, MPA
Social Worker · Los Angeles, CA
Sergio Antoniuk, MSW, MPA is a social worker with a practice address in Los Angeles, California, and NPI 1104939917, issued on Aug 16, 2006. Check the license (California ASW 17727, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Sergio Antoniuk
- Credential
- MSW, MPA
- Primary taxonomy
- Social Worker 104100000X
- License number
- ASW 17727 CA
Self-reported in NPPES; status is on the state search - Practice location
- 351 E Temple St, Los Angeles, CA 90012
- Phone
- (213) 253-2677
- Enumerated
- Aug 16, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (213) 253-5172
- Entity
- Type 1 · individual
Also registered at 351 E Temple St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Huong Ai, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1265534390
- Maral Anjargolian, R. PH.Pharmacist1841398070
- Andrew BaeFamily Nurse Practitioner1841983483
- David BaekRegistered Nurse1861028052
- Joetta Brown-Higgins, MSWClinical Social Worker1154348159
- Hannah Brunet, PHDClinical Psychologist1104355767
Verify Sergio Antoniuk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license ASW 17727Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1,054 social worker records list a practice address in Los Angeles
They are 1,054 of the 69,537 NPPES records with a practice address in Los Angeles, and 10,332 social worker records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,054 in Los Angeles → All 10,332 in California → Every provider in Los Angeles →
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Common questions
What is Sergio Antoniuk, MSW, MPA's NPI number?
Sergio Antoniuk, MSW, MPA's National Provider Identifier (NPI) is 1104939917, issued on Aug 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sergio Antoniuk, MSW, MPA located?
The NPPES record lists a practice address at 351 E Temple St, Los Angeles, CA, 90012. Phone: (213) 253-2677. Providers update this record themselves, so call before visiting.
How can I verify Sergio Antoniuk, MSW, MPA's license?
NPPES lists California license number ASW 17727, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.