Actually, some programs require some kind of direct patient experience. CNA is the perfect way to get it. Medical assistant is a bit harder to find a job...and the training is longer than the CNA. Save your energy for the PA.
You may check out the Red cross about their 22-day CNA class. I did mine there. Try the CC, or ROPs in your area to see if the have the program.
Anyway, the PA is a 2+ -years program. San Joaquin College has a great one as well as some schools near you. All programs require Ana, physi and Micro before you start.
PAs work in clinics, hospitals, Dr. offices. They can assist the doctors during surgery and prescribe meds.