Air Force enlisted career fields in the Medical areas encompass a wide range of specialties including Health Services Management, Biomedical Equipment, Diet Therapy, Public Health, Physical Medicine and Aerospace Physiology (there are others!) 
4A0XX Health Services Management 4A1XX Medical Material
4A2XX Biomedical Equipment 4B0XX Bioenvironmental Engineering
4C0XX Mental Health Service 4D0XX Diet Therapy
4E0XX Public Health 4H0XX Cardiopulmonary Laboratory
4J0XX Physical Medicine 4M0XX Aerospace and Operational Physiology
4N0XX Aerospace Medical Service 4N1XX Surgical Service
4P0XX Pharmacy 4R0XX Diagnostic Imaging
4T0XX Medical Laboratory 4V0XX Ophthalmic 4Y0XX Dental Assistant