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. After completing Chiropractic College he attended numerous seminars and received a board certification in nutrition, Master in Clinical Nutrition from UNS and an Advanced Proficiency Rating in Activator Methods adjusting technique. He is a member of ACA, IPSCA, Quincy Area Chamber of Commerce and Weston Price Foundation.
Dr. Mark is married to Karen with four sons, one daughter-in-law and one grandson and therefore knows why it is so important for patients to be healthy, not only so that they can support their families but so that they also can enjoy their families. His goal is to help patients not just manage disease but to help them attain true, natural health.
Karen Holtschlag manages the day to day operations at Natural Health. She has been married to Dr. Mark since 1986. Her family also keeps her very busy, she became a grandma in 2017 from her oldest son, A.J. and Melissa. Jimmy is attending Vet School at University of Illinois, Chip is attending Chiroprac'c school at Palmer in Davenport Iowa and Eddy is a Standard Process rep in the northern Illinois area, he is also our Standard Process Representive.
Erin started working at Natural Health in August 2016. She has been a patient here since 2014 and had such amazing results that when this position came open she knew it was the perfect opportunity to help others with their journey to a healthier lifestyle.