Department of Transportation medical card exams are required for drivers that hold a CDL license. Any driver driving a commercial vehicle over 10,000 pounds must have this medical card as well. In order to have a valid CDL in Kansas you must have a valid medical card. Most drivers can pass this test and have a valid card for 2 years. Some drivers are limited to a one year license due to physical limitations. Dr. Jerome Greene is certified to give DOT medical card exams. Due to a new law Doctors that are not certified by 2014 cannot perform DOT medical card examinations.