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

Dr. Margaret Mary Mertens, DC

Individual provider Rehabilitation Chiropractor · NPI 1225253628

Dr. Margaret Mary Mertens, DC is registered under Chiropractic in Marshfield, Wisconsin. Graduated from Palmer College Chiropractic - Davenport in 1986, 40 years ago. Licensed in Wisconsin.

Years since qualifying
40
Trained at
Palmer College Chiropractic - Davenport
Licensed in
WI
In the registry since
2007
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

See every abbreviation used in this directory →

Practice location Address checks out

106 S Chestnut Ave
Marshfield, WI 54449-2741
Phone: (715) 384-9064
Fax: (715) 387-6954
Show map & directions

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

Specialties & licences

Rehabilitation Chiropractor (primary) Taxonomy 111NR0400X · Licence 2195-012 (WI)

Record details

NPI number1225253628
Entity typeIndividual (Type 1)
GenderFemale
Credentials DC
Sole proprietorNo
NPI enumeratedApril 13, 2007
Last updated in NPPESMay 24, 2019

Medicare enrollment

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

Medicare specialtyCHIROPRACTIC
Medical schoolPALMER COLLEGE CHIROPRACTIC - DAVENPORT
Graduated 1986 (40 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 patients26
Services billed 564 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.