Mason Joseph Klaas, DC
Chiropractor · Bartlett, IL
Mason Joseph Klaas, DC is a chiropractor with a practice address in Bartlett, Illinois, and NPI 1609790468, issued on Aug 5, 2026. Check the license (Illinois 038.024504, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mason Joseph Klaas
- Credential
- DC
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 038.024504 IL
Self-reported in NPPES; status is on the state search - Practice location
- 260 E Army Trail RD Ste D, Bartlett, IL 60103
- Phone
- (630) 830-8600
- Enumerated
- Aug 5, 2026
- Record last updated
- Aug 5, 2026
- Entity
- Type 1 · individual
Also registered at 260 E Army Trail RD Ste D
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Ambrosio, D.C.Chiropractor1639591878
- Erin Blackburn, LAT, ATCAthletic Trainer1902411317
- Kenneth Bryan, DCChiropractor1871448852
- Michael Calcagno, D.C.Chiropractor1972613875
- Ceora Fair, DCChiropractor1669353280
- Griffin Gibson, DCChiropractor1629507421
Verify Mason Joseph Klaas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 038.024504Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21 chiropractor records list a practice address in Bartlett
They are 21 of the 384 NPPES records with a practice address in Bartlett, and 4,524 chiropractor records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 21 in Bartlett → All 4,524 in Illinois → Every provider in Bartlett →
Other chiropractor records in Illinois
- Jill Aardema, D.C.Oak Park, IL1063508497
- Robert Aarestad, DC, B.S., MMPPlainfield, IL1871939165
- Michael Abbett, DCGranite City, IL1144741703
- Wala Abu-Mallouh, DCRomeoville, IL1902327232
- Rashid Abu-Shanab, D.C.Bridgeview, IL1033298591
- Azza Abugisisa, D.C.Bridgeview, IL1164618468
- Kristen Accardo, D.C.Oswego, IL1215087598
- Allison Adair, DCAurora, IL1861954364
- Brent Adams, DCBradley, IL1992854251
- Erianne Adams, DCChicago, IL1295497915
Common questions
What is Mason Joseph Klaas, DC's NPI number?
Mason Joseph Klaas, DC's National Provider Identifier (NPI) is 1609790468, issued on Aug 5, 2026. An NPI identifies a provider in billing; it is not a license.
Where is Mason Joseph Klaas, DC located?
The NPPES record lists a practice address at 260 E Army Trail RD Ste D, Bartlett, IL, 60103. Phone: (630) 830-8600. Providers update this record themselves, so call before visiting.
How can I verify Mason Joseph Klaas, DC's license?
NPPES lists Illinois license number 038.024504, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.