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

Dr. Ronald James Losiewicz, DC

Individual provider Orthopedic Chiropractor · NPI 1235165457

Dr. Ronald James Losiewicz, DC is an Orthopedic Chiropractor in Lyons, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
Specialties on file
2
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

See every abbreviation used in this directory →

Practice location Address checks out

3840 S Harlem Ave
Lyons, IL 60534
Phone: (708) 442-3050
Fax: (708) 442-3058
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 038009846 (IL)
Orthopedic Chiropractor Taxonomy 111NX0800X · Licence 038-009846 (IL)

Record details

NPI number1235165457
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedJune 23, 2006
Last updated in NPPESApril 24, 2008