Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Yen Trang Huynh Jr.
Social Worker in Sunnyvale, CA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487400974
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mrs. Yen Trang Huynh Jr.
Sex Female
Practice address 225 E Ferndale Ave, Sunnyvale, CA, 94085
Phone (408) 420-3604
Enumeration date Apr 25, 2024
Last updated in NPPES Apr 25, 2024
Taxonomy & licenses
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Yen Huynh?
Yen Huynh is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-25.