To be honest, if you can't do that on your own, then you very definitely aren't ready to enter the job market doing anything to do with databases: that is the result of a very, very basic WHERE clause:
SELECT medicareid, firstservicedate WHERE firstservicedate >= '2017-09-26'
If you can't do that you need to go right back to the beginning of your course notes as you stand no chance at all of keeping any job you might bluff your way into.