NEW YORK—CBS programming executives reiterated their insistence Monday that the network's new medical drama L.A. Doctors is not some kind of joke. "We are putting out a show called L.A. Doctors and are doing so with no humorous intent," CBS president Leslie Moonves said. "Each week, the triumphs and tribulations of a group of attractive young Los Angeles doctors will be sincerely dramatized on this not-a-joke program." CBS is rolling out a high-profile promo campaign for L.A. Doctors featuring the slogan, "We Are Honestly Not Kidding About This Show."