When to contact an attorney? If you believe you have a potential medical malpractice case, you should contact an qualified medical malpractice law firm immediately. The attorney will want to begin an investigation of the possible claim. He needs to get records; he needs to interview witnesses; and the earlier that that attorney gets the case to begin his investigation, the better. There are also certain time periods and time restraints that you need to be aware of; by way of example, the statute of limitations.