Depending on where you live it may be really hard to find a cycling doctor. What matters is finding care-givers who see keeping you active as an important part of their jobs. My chiropractor is over 40 and still playing basketball regularly. He understands that an aging athlete's life is not pain free, it just feels better. His goal is to get me back on the bike not to cure me by limiting my life to activities that are guaranteed to be painless.