I have. Especially a dentist, and a few orderlies. Being in the military, mostly males, so there is a chance obviously. All extremely professional and competent, and before or during DADT policy. There were the occasional times during a procedure, especially when they were in scrubs or even khaki uniform, the inadvertent crotch press was oh so grateful observed. Of course, nothing more and still makes me quiver just bit "down there" thinking about it.... LOL
An aside, the one down side of the NE new policy in the military is that straight guys are now much more aware and private in locker rooms, showers, etc. And with it the banter, camaraderie, and gratuitous admiration of the male form. IMHO