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

William Ray Block, DPT

Physical Therapist in Naperville, IL · enumerated 2007.

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

National Provider Identifier

1437378684

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Registry record

Entity type Individual (Type 1)
Name William Ray Block
Credential DPT
Sex Male
Practice address Naperville, IL, 60563
Phone (630) 369-1015
Enumeration date Apr 25, 2007
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary
DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession. About the DPT 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 William Block?
The National Provider Identifier (NPI) for William Block is 1437378684, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Block practice?
The practice location on file with NPPES is in Naperville, IL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.