Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. John J Riordan, DC

Individual provider Chiropractor · NPI 1558490524

Dr. John J Riordan, DC is a Chiropractic in Warrensburg, Missouri. Graduated from Northwestern College of Chiropractic in 1993, 33 years ago. Accepts Medicare assignment. Licensed in Arizona, Hawaii, Missouri and Oregon and 1 more.

Years since qualifying
33
Trained at
Northwestern College of Chiropractic
Licensed in
AZ, HI, MO, OR, SC
In the registry since
2007
Specialties on file
5
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

420 E Young Ave
Warrensburg, MO 64093
Phone: (660) 422-7246
Fax: (660) 422-7243
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 2008033989 (MO)
Chiropractor Taxonomy 111N00000X · Licence 3042 (OR)
Chiropractor Taxonomy 111N00000X · Licence 5137 (AZ)
Chiropractor Taxonomy 111N00000X · Licence 991 (HI)
Chiropractor Taxonomy 111N00000X · Licence 3070 (SC)

Record details

NPI number1558490524
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorNo
NPI enumeratedMarch 5, 2007
Last updated in NPPESMarch 1, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCHIROPRACTIC
Medical schoolNORTHWESTERN COLLEGE OF CHIROPRACTIC
Graduated 1993 (33 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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