Can I check an airman’s current medical certification status in AMCS?

Yes. Go to the AMCS Search Applicants screen and search for the airman.  Once you find the airman, look at the Found Exam(s) for Selected Applicant section located at the bottom of the screen. The Class Issued column displays the current medical certification status for that exam. In the example below, the exam was deferred to the FAA.  The class issued status will update when a determination is made.