NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Connie Xiao Sun, L.C.S.W.

Clinical Social Worker in South Pasadena, CA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1073708210

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Registry record

Entity type Individual (Type 1)
Name Connie Xiao Sun
Credential L.C.S.W.
Sex Female
Practice address South Pasadena, CA, 91030
Phone (626) 441-4221
Fax (626) 441-6479
Enumeration date Sep 11, 2007
Last updated in NPPES Feb 29, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 26121 (CA) Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW28964 (CA) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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.

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Frequently asked questions

What is the NPI number for Connie Sun?
The National Provider Identifier (NPI) for Connie Sun is 1073708210, a Type 1 (individual) record in the CMS NPPES registry.
Where does Connie Sun practice?
The practice location on file with NPPES is in South Pasadena, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-29.