Forgive me if this has all been asked and answered elsewhere, but I've scoured the past year's posts without much success, as much of the information assumes citizenship in an EU country. My husband and I are about to leave the US for a year in Uzès. We won't be working, except for writing, and will bring US income with us. We're going to use the 90 day visa option, as we'll be traveling to other EU countries frequently and they've made it a huge hassle to get a long stay visa from within the US. We have US health insurance that will cover accidents and urgent care in France. My husband will be going to Institute Gustave Roussy for participation in a cancer research study once a month. Are we eligible to sign up for CPAM after the first 90 day period? Is there supplemental insurance that a cancer patient would be eligible to buy? All help and advice will be much appreciated!