Dr. Holst gained his Doctor of Chiropractor from New York Chiropractic College in 1985.  In 1998, Dr. Holst joined forces with other medical professionals including a physical therapist and a podiatrist, at Physician MultiCare, PLLC and later, Mid-Hudson Physical Medicine PC. Then Dr. Peter Holst, returned to private practice opening Holst Chiropractic in 2002 which is now serving patients as Middletown Health Wellness and Chiropractic.

He holds several certifications including: True Cellular Detox, Neurologic Relief Centers Technique, Torque Release Technique, Scoliosis Recovery Treatment System, Body Balance for Performance Certification, Whiplash Certification, and Back Power Plus Certification. He is also a member of several associations including the Foundation for Chiropractic Education and Research as well as the New York State Chiropractic Association, where he served as president of District 9 from 1991 – 1993.