I used to live in the tri-valley have been to several chiropractors, each taking X-rays, each would have you sign a contract for treatments usually having you go 3x's a week for 6+ mos. I would leave one due to no success to go to another, then another, then another. We moved to discovery Bay and found Dr. Pierce. He doesn't do X-rays and no contracts, he doesn't push treatments. My husband was a total non-believer in chiropractors, however at one time he was hurting so bad I convinced him to see Dr. Pierce. The doctor worked on him twice in one week and then told him, after a 3 more treatments if he don't feel better then he can't help him. After one more treatment he was as good as new and is now a firm believer in Dr. Pierce. Dr. Pierce and his staff are Always very friendly, never had to wait more then 3 mins. Hassle free, they take care of all the insurance paperwork. Would recommend to everyone.