Orpax
Doctor Orpax was a 24th century Ferengi physician, one of the most expensive doctors on Ferenginar. He charged two slips of latinum just to walk into the waiting room. 

In 2372, Quark visited Dr. Orpax for his annual insurance physical. He mistakenly diagnosed Quark with Dorek Syndrome, a fatal and rare disease. Orpax sent a message to Doctor Bashir that stated that Quark did not have Dorek Syndrome. Quark was overjoyed, as it meant he could sue Orpax for malpractice. ()

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de:Orpax
Ferengi
Medical practitioners