info@activechiropractic.us       (608) 783-3307


Dr. Mark Cassellius, Doctor of Chiropractic

Dr. Mark CasselliusDoctor of Chiropractic

I am a graduate of Northwestern College of Chiropractic. After graduation I practiced in southeast Minnesota before relocating to the La Crosse area. I have been practicing in the Coulee Region for more than 25 years. I am a member of Rotary, Onalaska Area Business Association and have been on the Onalaska School Board for 15 years. My certification in Nutritional Counseling was earned in 2008. I am a member of the Wisconsin Chiropractic Association, serving as District President several years. Additionally I am licensed to practice in South Dakota and Minnesota.

My wife Cindy and I live in Onalaska. Our daughter Brescia and husband Dr. Joe Berg live in Des Moines.

Jackie Bachmann, Clinic Manager

Jackie Bachmann – Clinic Manager

I have over 30 years of experience working at various medical receptionist positions. For the last 10 years I have enjoyed a career in Chiropractic. I grew up in Madison and moved to the La Crosse area 10 years ago. My husband Ray I live in Trempealeau with our 3 dogs. I enjoy spending time with my three children and grandchildren, warm afternoon drives in my Volkswagen Bug and Green Bay Packer games.

Tammy Larson, Business Manager

Tammy Larson – Business Manager

I have had a career in Chiropractic for more than 20 terrific years. I am a graduate of Western Technical College and a Registered Radiography Technician. My responsibilities include radiography, accounts receivable and insurance billing. My husband Jeff and I live in West Salem with our three children.  I enjoy volunteering at West Salem Schools, scrapbooking and tractor pulling.

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