Registry data as of Aug 27, 2026

Youjin Chang

Social Worker · San Leandro, CA

Youjin Chang is a social worker with a practice address in San Leandro, California, and NPI 1538046438, issued on Aug 20, 2025. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1538046438
Name
Youjin Chang
Primary taxonomy
Social Worker 104100000X
Practice location
1100 San Leandro Blvd Ste 400, San Leandro, CA 94577
Phone
(510) 920-6169
Enumerated
Aug 20, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1100 San Leandro Blvd Ste 400

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lola Allen, DTMCase Manager/Care Coordinator1962380832
  2. Enrique Ferrel, BSCommunity Health Worker1275411001
  3. Froilan RomeroCommunity Health Worker1720965668
  4. Wing TangHealth & Wellness Coach1093693772

Verify Youjin Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

85 social worker records list a San Leandro practice address

They are 85 of the 4,976 NPPES records with a San Leandro practice address, and 10,180 social worker records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other social worker records in California

  1. Katie AbajianSan Ysidro, CA1710211818
  2. Katherine AbarcaRancho Cucamonga, CA1225814304
  3. Vafa AbbassiPasadena, CA1740538198
  4. Alexis AbbottSan Diego, CA1265158877
  5. Jeanne Abbott, LCSWModesto, CA1780786939
  6. Vanessa AbcedeLos Angeles, CA1306584495
  7. Sabrina AbdelmutiLong Beach, CA1215244280
  8. Michelle AbdennourNorthridge, CA1467838458
  9. Mulky Abdi, BAEl Sobrante, CA1760609861
  10. Sara Abdi-PanarielloSacramento, CA1912186172

Common questions

What is Youjin Chang's NPI number?

Youjin Chang's National Provider Identifier (NPI) is 1538046438, issued on Aug 20, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Youjin Chang located?

The NPPES record lists a practice address at 1100 San Leandro Blvd Ste 400, San Leandro, CA, 94577. Phone: (510) 920-6169. Providers update this record themselves, so call before visiting.

How can I verify Youjin Chang's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.