There are many different types of medical transport available in the United States. There are ground, chopper, and fixed wing modes of medical transport. **For long distances(more than two or three hundred miles), a fixed wing air ambulance transport is usually the best means of travel.
The are a few different reasons that an individual might need a medical transport. For instance, patients who are confined to their beds must travel in an ambulance(or stretcher van in states where it exists) or an air ambulance.
If a patient can sit up and needs to travel by air, the patient can go on a scheduled Part 121 carrier if they are in good enough condition to do so. Part 121 commercial airlines also provide oxygen with anywhere from 2-10 days notice, depending on the airline. There are also medical escorts from private air ambulance companies, such as flight nurses and flight paramedics, that can accompany the patient on a Part 121 commercial flight.
There are some organizations that provide standards and also benefits for the medical transportation industry. The following are two major ones:
Campts - The Commission on Accreditation of Medical Transport Systems
AAA - The American Ambulance Association