Whether your right to privacy regarding the content of your medical records has been violated and/or whether you have been slandered depends on the terms of your contract with the old provider. Many such contacts contain provisions that allow for the release of private information to other providers. If your old provider made untrue statements about you to your new provider, then that would be a basis for slander. You would need to review the contract and go from there. Slander cases are generally very difficult unless you have a recording. Otherwise, it usually turns out to be a swearing contest. Good luck!