Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Maria G Castillo, MSW
Social Worker in Berwyn, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1437226552
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Registry record
Entity type Individual (Type 1)
Name Mrs. Maria G Castillo
Credential MSW
Sex Female
Practice address 6918 Windsor, Berwyn, IL, 60402
Phone (708) 795-4800
Fax (708) 795-4834
Enumeration date Nov 30, 2006
Last updated in NPPES Jul 8, 2007
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 is the NPI number for Maria Castillo?
The National Provider Identifier (NPI) for Maria Castillo is 1437226552, a Type 1 (individual) record in the CMS NPPES registry.
Where does Maria Castillo practice?
The practice location on file with NPPES is in Berwyn, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Elizabeth Monk Social Worker · Berwyn, IL NPI 1932208469 Christine Freeman Clinical Social Worker · Berwyn, IL NPI 1831270032 Helen Stewart Clinical Social Worker · Berwyn, IL NPI 1013098128 Ann Schreiner Clinical Social Worker · Berwyn, IL NPI 1619058815 Linda Hinker Clinical Social Worker · Berwyn, IL NPI 1114008315
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.