Thank you for your question. I look forward to working with you to provide you the information you are seeking for educational purposes only.
When an attorney is hired to represent someone, they are given the authority to use their professional legal judgment to work out the best deal for their client or to use that judgment in trial/arbitration that they can based on their professional evaluation of the evidence, the law and past judgments/settlements in similar types of cases. Many times, clients have unrealistic expectations of what their cases are worth and attorneys are the unbiased evaluator of the evidence and law to help make the realistic determination.
Also, one thing many clients do not realize is that lawyers constantly negotiate with other parties in a case, it is not collusion or that the attorney is against their client's interests, it is their job to negotiate settlements. A settlement is by very definition something that neither party is happy about taking but it is something they can live with and is reasonable considering all factors (evidence, law, cost of pursuing the matter further through trial which can be very expensive and in the long run lead to the client not getting much more money than the settlement provides).
Filing a bar complaint requires you to prove he actually violated the rules of professional conduct or was negligent in his representation. Merely because a client did not get what they believe their case was worth out of a settlement or arbitration is not sufficient to prove the attorney was negligent. So you are going to need professional experts to evaluate your case and your attorney's actions to determine whether or not he was negligent. If your attorney (and your award) is found to be reasonable (even though it may not be as much as you wanted) based on the evidence and actions of your attorney and the law, then you would not succeed in a bar complaint or a malpractice claim against the attorney.
A contingency fee contract is a percentage of the award plus costs and expenses and if the attorney has kept more than their percentage plus costs and expenses, then you can seek a return of that over payment. The attorney will have to provide you proof of why he is keeping the money he is keeping by giving you an itemized statement proving costs and expenses. If he does not do that, then you can file a bar complaint for that reason and also seek fee dispute resolution.
As far as the release of your medical records. Unless the hospital had a signed release from you for those records or a court subpoena, HIPAA
prevents them from releasing them. Under HIPAA the sole agency with authority to investigate and enforce HIPAA is the US Department of Health and Human Services, so you would have to file a complaint with them, as there is no personal right to sue under HIPAA. If they discover that the hospital improperly released the files, then you would have to seek to sue the hospital for breach of their duty of confidentiality of medical records in STATE court, not under HIPAA, and you can seek damages from them for that improper breach of confidentiality.