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

Dr. Mark A Cassellius, DC

Individual provider Chiropractor · NPI 1669433462

Dr. Mark A Cassellius, DC is a Chiropractor in Onalaska, Wisconsin. Practices as a sole proprietor. Licensed in Wisconsin.

Licensed in
WI
In the registry since
2006
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

419 Sand Lake Rd
Onalaska, WI 54650-2706
Phone: (608) 783-3307
Fax: (608) 779-9728
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 2293 (WI)

Record details

NPI number1669433462
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedMarch 31, 2006
Last updated in NPPESApril 26, 2011
Mailing address419 Sand Lake Rd, Onalaska, WI 54650-2706

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