Dr. Holtz graduated from Life Chiropractic College in Marietta, Georgia with honors in 1981. He passed his National Boards and his Wisconsin State Board Examination on December 3, 1981. After school, he had a strong desire to return to his home state of Wisconsin in order to help people there. He opened his chiropractic practice in Menomonee Falls in 1982 in association with another chiropractor, Dr. Edward Schmidt. He practiced there for 14 years and in 1996 founded his current facility in Jackson.

Dr. Holtz's philosophy of health care revolves around the body's strong ability to heal itself. Dr. Holtz has mutual respect for the medical profession and believes both fields can work together in a complementary way for the good of the patient. Chiropractic care is especially important for those people that have hereditary weaknesses or abnormalities, structural and or muscle imbalances, arthritic problems or people who have suffered injuries to their spine. Dr. Holtz continues to progress in his field by taking seminars and courses in patient care that he can utilize in his office.

Dr. Holtz has one son Chad, who graduated from Germantown High School in 2005. He and son Chad are members of Grace Lutheran Church in Menomonee Falls. They both enjoy outdoor activites, especially fishing.