Once again it does not need to be by a state licensed Physician. The note under ADA can be from a cheaper LHCP licensed healthcare professional. Licensed health care professionals include physicians, psychiatrists, psychologists, licensed clinical social workers, nurses, nurse practitioners, physician’s assistants, and licensed counselors.  How do you get them to actually write you a note? Or is it more about establishing the condition you can refer back to? Asking for them to write you a note would seem pretty weird.