Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John B Rex, MSW, LSW
Clinical Social Worker in Exton, PA · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1932468618
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Registry record
Entity type Individual (Type 1)
Name John B Rex
Credential MSW, LSW
Sex Male
Practice address 403 W Lincoln Hwy, Suite 206, Exton, PA, 19341
Phone (610) 363-2088
Enumeration date May 15, 2012
Last updated in NPPES May 15, 2012
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 John Rex?
The National Provider Identifier (NPI) for John Rex is 1932468618, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Rex practice?
The practice location on file with NPPES is in Exton, PA. 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 2012-05-15.