What Is Medicare Hmo Insurance? 
HMO stands for Health Maintenance Organization . When you are in an HMO you must stay in a network of doctors and health care providers , otherwise you are not covered unless you have an emergency . When selecting your Medicare Advantage Plan it is crucial that you make sure your doctors and hospitals are in your network . Also if you travel outside of your area for a few months out of the year , many Ohio residents have homes in Florida , for example and live in Florida during the winter , make sure your plan has a program that will allow you move your network to that state . United Healthcare and Aetna have such programs . 