The Caspian Sea is the largest land enclosed surface water body on Earth by surface area, which amounts to approximately 371,000 square kilometres. It is in an endorheic basin bounded on the south by Iran, on the north by Russia, on the east by Kazakhstan and Turkmenistan, and on the west by Azerbaijan.
Medical Definition of physiatrist. : a physician who specializes in physical medicine and rehabilitation.
There really is not one, at least not in the most specific sense. A Physiatrist cares for the musculoskeletal system, but then so do physical therapists and massage therapists. If you need testing or diagnosis, you will need to see the medical doctor.