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Dr. Mason Joseph Klaas, DC

Chiropractor in Bartlett, IL · enumerated 2026.

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

National Provider Identifier

1609790468

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Registry record

Entity type Individual (Type 1)
Name Dr. Mason Joseph Klaas
Credential DC
Sex Male
Practice address 260 E Army Trail Rd Ste D, Bartlett, IL, 60103
Phone (630) 830-8600
Enumeration date Aug 5, 2026
Last updated in NPPES Aug 5, 2026

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 038.024504 (IL) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 Mason Klaas?
The National Provider Identifier (NPI) for Mason Klaas is 1609790468, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mason Klaas practice?
The practice location on file with NPPES is in Bartlett, 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 2026-08-05.