What qualifications do you have as a mediator? How much experience do you have in divorce mediation specifically? How many couples have been through the process with your help? Do both spouses need to participate in the sessions, or can one come alone and discuss their situation with you individually if needed? What methods of communication does the session involve (e.g., meetings face-to-face, telephone calls)? Are there any additional services included that coordinate outside experts like attorneys or financial advisors when necessary for more complex cases involving high net worth individuals/assets, child support calculations etc.?
It's important to make sure the mediator you choose has experience in dealing with your particular situation. Research what type of cases they've handled before and ask for references from any previous clients so you can get a better understanding of their expertise.