Location & Hours Menu Home Services Meet the Doctor Conditions We Treat New Patient Center Location & Hours Health Resources Location and Hours Antioch & Brentwood Chiropractor Location. Steen Chiropractic offers chiropractic care to residents in Antioch and Brentwood areas. Best Chiropractor in Antioch and Brentwood Office Dr. Ryan Steen, B.S., D.C.(925) 642-4389 office Hours For current office hours, please use the “Book Your Appointment” button or call 925-642-4389 Address 2489 Discovery Bay Blvd, Ste 402Discovery Bay, CA 94505 Chiropractic Improves Your Quality of Life From Accidents & Injuries To Health & Wellness Chiropractor New Patient? Call for a Free Consultation.