If you did nursing home work, which varies in availability by region, but in some areas is in very high need, you would be able to collect 80% of medicare for all patients, and 100% for some of the patients with coinsurance. Your overhead costs would be about 10-20% as you would not need to rent an office or hire staff to answer phones and put people in rooms, etc. There are people doing very well in this line of work, though it is not for everyone. It is a way to start out in practice if you need cash flow to start, and enjoy interacting with older people. Some people make a career out of this and become medical directors, and do hospice management as well. If you do hospice for a period of time, you will be eligible to write the board exam which can open more doors to you. Most nursing home patients are in need of high quality compassionate care and this is not always available to them.