This is an odd bleg because I know a lot of the literature on the effects of competition* among private Medicare plans (Parts C and/or D). What I’m wondering is if anyone has ever done a comprehensive review article on the subject. It’s hard to prove a negative, but I’m starting to think such a paper is not out there. I’ve done some Google Scholar searches and asked some colleagues and have come up empty. If you know of a relevant paper, please share.
* By “effects of competition” I mean the consequences for premiums, benefits, provider access, and quality (etc.).