How do I initiate a mediation with my new dentist. I signed an agreement to mediate and he has gone back on his verbal agreement

The written agreement you signed that you want to enforce by using mediation may say that no oral promises induced either party to sign the agreement, that the written agreenment can't be modified except by a signed writing, and other provisions that dictate that no oral agreement before or after this written one was signed has any bearing on the contract. The idea is that if you were supposed to get a 10% discount, that should have been put in writing and signed.

Like all contract questions, since all contracts are unique and there's no such thing as a "standard" contract, you're best off having someone review your particular contract to see what's been agreed to, regarding modification, mediation, and legal fees, among other terms.

You may have a fraud issue here if, for example, you were promised a 10% discount and were told that the discount was in the agreement you signed and you didn't need to read it.

Avvo's not a substitute for a full-blown consultation with a lawyer where you can disclose all the facts of your situation and provide all the relevant documents for review and get specific advice - that's what you need.

Disclaimer: Please note that this answer does not constitute legal advice, and should not be relied on, since each state has different laws, each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue. This answer does not create an attorney-client relationship.