Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Mark Holtschlag, DC

Individual provider Nutritionist · NPI 1174680672

Dr. Mark Holtschlag, DC is registered under Chiropractic in Quincy, Illinois. Graduated from Palmer College Chiropractic - West Sunnyvale in 1981, 45 years ago. Practices as a sole proprietor. Licensed in Illinois.

Years since qualifying
45
Trained at
Palmer College Chiropractic - West Sunnyvale
Licensed in
IL
In the registry since
2007
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

2000 Jefferson
Quincy, IL 62301-5655 Not confirmed with CMS for 18 years — call before visiting
Phone: (217) 228-2040
Fax: (217) 228-2042
Show map & directions

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

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X (IL)
Nutritionist Taxonomy 133N00000X

Record details

NPI number1174680672
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedJanuary 3, 2007
Last updated in NPPESApril 9, 2008

Medicare enrollment

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

Medicare specialtyCHIROPRACTIC
Medical schoolPALMER COLLEGE CHIROPRACTIC - WEST SUNNYVALE
Graduated 1981 (45 years in practice)
Accepts Medicare assignment Not indicated

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients27
Services billed 339 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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