How can one get adequate medical assistance in the u.s., if one's means are not enough to pay for the med bills?

Several choices.: Most communities have community heath centers which charge people based on their ability to pay. They also have people who can advise you of other programs that may be available in your community or state. You may also contact the states depart of health and human services to see if there are programs you qualify for and what other options are available to you.