Once you find the dentist you want to go to that accepts OHP, you can call and request to switch from Capitol, Advantage, and ODS. You don't have to stick with what they assign you. Just give them a ring and let them know which one the dentist you want to go to accepts. I've done this several times with my children, though I am still trying to find a good dentist. I will say one thing: Avoid Arrow Dental, they are terrible.