John Lindsey Tweed MD became an Psychiatry doctor in 1987. Male doctor. Specialty Dr. Tweed specializes in the following: Psychiatry Location Cumberland Falmouth MEĀ  4105 phone: fax: email: website: Education Dr. Tweed was educated at the following institutions: Medical School Attended: Duke Univ Sch Of Med, Durham Nc 27710 Specialist training Duke Univ Med Ctr,