It's about time for me to get a good, thorough, hearing checkup. Some tinnitus, probably some hearing loss in some frequencies, but mainly I feel ready to get a good baseline check. There are lots of hearing-check places to choose from, but most seem like they are hearing aid dealers. Is there a particular license, certification, board membership, or something that I should look for? Or should I go through my own doc and then get a referral to an ear specialist MD? Not sure how this game is played.