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

Jaeseung Sin

Case Manager/Care Coordinator in San Leandro, CA · enumerated 2025 · practices at Korean Community Center of the East Bay.

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

National Provider Identifier

1639046535

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Registry record

Entity type Individual (Type 1)

Name Jaeseung Sin

Sex Male

Practice address San Leandro, CA, 94577

Phone (844) 828-2254

Fax (510) 547-3258

Enumeration date Oct 23, 2025

Last updated in NPPES Oct 23, 2025

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

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1639046535 active?

Yes, as of the latest NPPES snapshot, NPI 1639046535 is active (record last updated 2025-10-23).

How do I verify Jaeseung Sin's NPI record?

Cross-check NPI 1639046535 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-23.