Kelsey Grammer’s character on the show with the same name, ‘Fraser,’ was a radio psychologist. Unlike a lot of doctors, he did his job with his words and not his hands.

But as you’ll see throughout this cluster, like Kelsey Grammer on Fraser, new innovations have allowed doctors to not physically touch their patients (iPhone apps for symptoms). Others allow doctors to communicate with the patients through media outlets (Twitter) and some just don’t need doctors at all (fish doctors).

Either way, whether anatomically (surgeons) or psychologically (Kelsey Grammer…hehe), doctors have come a long way. Here are 21 important practitioner innovations.