There is no cause of action for "stabbing you in the back." Your potential claims might be for violation of your medical rights to privacy or HIPPA violations. Certain states have reporting requirements or allowances for medical professionals to report physical or mental capacity issues to the DMV because it is considered a public safgety exception. See e.g. NAC 483.300 ("The [DMV] has good cause to believe written information which is notarized and received from. . . . (b) Licensed physicians, psychiatrists, psychologists and optometrists"). You should speak with counsel regarding your rights.
Answered on Sep 12th, 2013 at 7:26 PM