Not following you about religion being a nasty little virus, in your job. Do you mean amongst your coworkers, or do you mean problems you have trying to get your patents to rely upon real medicine, rather than prayer and similar silliness?
I have some experience working with nurses, but it was through the I.T. department of an HMO. I'm not sure that counts, since I wasn't exactly dealing directly with anything medical, and the nurses we had weren't hands-on, like an ER or Intensive Care nurse.