I was in a car accident 15 years ago that has provided me with on/off lower back problems. I have been to several chiropractors over the years based on where I was living, proximity to work, etc. None has been able to address my issues as well as Dr. Mark. He is head and shoulders above the rest. I have moved to Monroe, and still drive to Issaquah to Dr. Mark. It is worth the drive. If you want an exceptional Chiropractor, give Mark a try, you won't be sorry.