Meet The Team

Dr. Mark Holtschlag

Nutritionist | Chiropractor

Dr. Mark is a 1981 honors graduate of Palmer College of Chiropractic in Davenport, IA. He attended the University of Illinois in the Pre-Med Program and decided that drugs and surgery was not something he wanted to be involved with.

Dr. Chip Holtschlag


Dr. Chip is a recent graduate of Palmer College of Chiropractic in Davenport, Iowa. He attended Western Illinois University majoring in biology which raised his interest on how the body functions properly. He is excited to help others express their true potential for a healthy life. Dr. Chip's research has guided him to the Zone Technique that looks at the six kinds of disturbances that can affect the human body.

Karen Holtschlag

Manager | Director of Public Education

Karen enjoys working with patients to help them improve their health, she loves spending time outdoors and gardening. She has 4 sons and two grandsons.

Erin Fischer

Patient Advocate | Marketing Manager

Erin joined the Natural Health Staff in 2016. As Patient Advocate, she enjoys helping patients learn how to make changes through diet and lifestyle to create a healthier life. In her free time she loves being outside, gardening, reading, walking their chocolate lab, Felson, traveling and going to concerts.

Terry Godfrey 

Patient Advocate

Terry has been part of our team since September 2015! She has 6 children and 1 grandchild. Her family has been patients of Dr. Mark's for 20 years!

Sydne Holder

Front Desk Assistant

Nadine Behnerds

Front Desk Assistant


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2000 Jefferson St.
Quincy, IL, 62301

Office Hours

Sunday | Closed
Monday | 8:00 AM - 6:00 PM
Tuesday | 7:00 AM - 5:00 PM
Wednesday | 8:00 AM - 6:00 PM
Thursday | 7:00 AM - 5:00 PM
Friday | 1:00 PM - 5:00 PM
Saturday | Closed