Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Serafin Frank Guerrero Jr., LSW
Social Worker in Bartlett, IL · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1528892205
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Registry record
Entity type Individual (Type 1)
Name Mr. Serafin Frank Guerrero Jr.
Credential LSW
Sex Male
Practice address 822 W Bartlett Rd, Bartlett, IL, 60103
Phone (630) 587-3777
Enumeration date Aug 27, 2024
Last updated in NPPES Aug 27, 2024
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 150113720 (IL) 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.
Frequently asked questions
Is NPI 1528892205 active?
Yes, as of the latest NPPES snapshot, NPI 1528892205 is active (record last updated 2024-08-27).
How do I verify Serafin Guerrero's NPI record?
Cross-check NPI 1528892205 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-27.