The doctor cannot be as mercenarily driven as he appears in this Boston Globe article — can he? The article says:
Doctor quits Brigham to speak for pay
Boston physician Lawrence M. DuBuske was given a choice: Either stop moonlighting as a paid speaker for pharmaceutical companies or quit his job at a top Harvard teaching hospital. To the surprise of some, DuBuske, an allergy and asthma specialist and a Harvard Medical School instructor, will resign from Brigham and Women’s Hospital at the end of the month, the hospital said.
DuBuske is no ordinary speaker. Out of thousands of US doctors hired by drug-maker GlaxoSmithKline to talk about its products, he was the highest paid during a three-month period last year, 
the company recently disclosed: He made $99,375 for giving 40 talks to other physicians last April, May, and June, almost one every other day.
BONUS: A photogallery of Dr. DuBuske and colleagues at a medical conference in Spain.