You can do online Healthcare MBA or take leadership courses in medical societies.
One can become a leader and work in hospital administration without an MBA. Just start working with current leaders and show interest.
Life insurance Medical Director is an option. One can get Board certified in insurance medicine.
Become certified as a PMP and it could increase your chances.
Medical Director for health plan: Once you attend their initial interview, they may call for a second interview. Everyone is busy, so scheduling a 2nd interview means that you are a strong candidate and they would like to figure out if you are going to be a good fit for them.
To prepare for the interview, read the info on the company website, know about trends in your market and how this company fits with it’s competition. Search in LinkedIn to find those doing similar jobs and get some idea.