meet the team

Chiropractor Marshalltown IA Dr Brian Fritz


Brian Fritz D.C.

Dr. Fritz, a native of Marengo, Iowa, began his studies at Central College in Pella, Iowa, where he received his B.A. degree in Pre-Med. He then chose to attend Palmer College of Chiropractic in Davenport, Iowa.

While at Palmer College, Dr. Fritz became interested in the Gonstead technique. This is a specific technique in chiropractic that utilizes hands-on adjustments to specifically realign the spinal column. Dr. Fritz has spent many postgraduate hours attending Gonstead seminars and attaining his C.C.S.P. Credentials. The latter involves assessing and treating sports-related injuries. Dr. Fritz is also a proud member of the Iowa Chiropractic Society and Advantage Chiropractic Network. Brian and his wife, Diana, have three children and live in Marshalltown.

Chiropractor Marshalltown IA Ian Slagle Meet Team


Ian Slagle D.C.

Dr. Ian Slagle is a longtime resident form the Tama/Toledo area where he graduated from South Tama in 2015. Dr. Slagle continued his education an athletic career at Grand View University in Des Moines earning a Bachelor of Science degree in Kinesiology.

Utilizing chiropractic care for pain management and overall health throughout his athletic career inspired Dr. Slagle to continue his education at Cleveland University of Kansas City where he earned his Doctor of Chiropractic degree. Dr. Slagle is passionate about serving his communities by providing comprehensive chiropractic health care, making lives better through non-medicated pain management practices.

During Chiropractic school Dr. Slagle found through his many experiences that helping people through chiropractic care is what he is passionate about. He looks forward to serving those who come into the office, whether that be through chiropractic care, lifestyle changes, or pain management therapies. Dr. Slagle also looks forward to offering DOT physicals in the future.

Dr. Slagle is happy an excited to be back in his community and to continue to build relationships and provide care to those in need.

Chiropractic Marshalltown IA Diana Fritz

Office manager

Diana Fritz

Diana is a graduate of Central College where she served as a student athletic trainer for a variety of sports teams. She is trained in applying electrical muscle stimulation and manual ultrasound for patients in acute stages. Diana also takes care of all the billing and insurance needs for the office.

Diana is the wife of Dr. Brian Fritz and enjoys their 3 children who keep them busy with sporting events.

Chiropractic Marshalltown IA Receptionist

Front Desk Manager

Jenny Van Kirk

Jenny graduated from BCLUW high school and grew up in the Conrad la area. Jenny is happily married to Dusty Van Kirk. They reside in Marshalltown. She has been with Dunham Fritz Chiropractic for 7 years now and is a vital team member at the front desk. She enjoys bowling and hanging out with friends and family.


8:00am - 6:00pm

9:00am - 5:00pm

8:00am - 6:00pm

8:00am - 6:00pm

8:00am - 4:00pm

First Saturday Of The Month
9:00am - 12:00pm
(By Appointment Only)

Dunham-Fritz Chiropractic

2501 South Center Street Suite E
Marshalltown, IA 50158

(641) 752-3112