· Patient Portal; Find a Doctor; Care & Services. Back to Main Menu; Care & Services Home ... Accepting New Patients. See Locations . Specialty. Internal Medicine; Board Certification. AOB of Internal Medicine, Certified ... Additional Office Locations. Office of Dr. Tanya Zouzas. 227 Chelmsford Street Chelmsford, MA 01824 (978) 250-0032 (978 ....