A friend was head of transport for a hospital. They have to be trained because sometimes (maybe often) patients are compromised, nervous, weak, etc., and there are safety considerations), but benefits are based on hours, not on the job per se. In her particular hospital, ironically, the health benefits were not good. She, as a full time manager, got insurance through her husband's teaching job. Stupid system! But a major hospital & teaching facility or a trauma center would have better benefits than a small regional hospital. If you are providing transport for a private ambulance company, then benefits are base both on hours and the ability of the employer to provide. What you want to check is how many hours per week are guaranteed.
Often companies keep employees below 30 or 32 hours for the express purpose of not having to provide benefits. But you would find that through the hospital or ambulance company, not specifically limited to transport.