Patients & Visitors; Return to Nav. All Cape Cod Healthcare Providers > MA > Osterville; Physician Finder. 3 Cape Cod Healthcare Providers in Osterville, Massachusetts. Mark E. Collins, MD. Internal Medicine. 10 Osterville West Barnstable Road. Osterville, MA 02655. US. Phone: (508) 428-2620 (508) 428-2620. Directions..