Tel: (978) 649-5777 Call For A Free Consultation MAP & DIRECTIONS Perras Chiropractic 404 Middlesex Rd., #3 Tyngsboro, MA. HOURS: Mon. 3:00-6:00PM Tue. 10:00-2:00PM Wed. 3:00-6:00PM Thu. 3:00-6:00PM Fri. 10:00 – 2:00PM Telephone number: (978) 649-5777.