Royal Pains

A mysterious German nobleman with a large estate in the Hamptons (filmed at Long Island's Oheka Castle). In the series' pilot, Hank saves the life of April, a guest at Boris's party and Boris rewards Hank with a bar of solid gold, a job as concierge doctor, and use of his guest house. He has apparently referred several of Hank's patients to him and admits to "having plans" for Hank. Boris is extremely secretive, having moved to the Hamptons specifically to stay out of the public eye. Boris sometimes uses his money to bend and break rules. He owns a shark which was being used in a medical experiment and injures one of the scientists in one episode. Hank states after a physical examination that Boris is in almost perfect physical health, yet Hank knows that something is wrong. It is later discovered that Boris has a genetic disease that has affected the past three generations of his family. The condition causes a lack of muscle control, degenerating brain function, and death around the age of 44. In season two, Boris agrees to let Hank "quarterback" a cooperative effort between all of Boris's former doctors and researchers. Boris is somewhat cavalier about experimentation to cure his disease; this has led to unintended side effects such as muscle spasms, temporary blindness and not heeding Hank's advice.

Source: wikipedia.org