Medical Malpractice claims are not always valid with every medical injury and they do not always provide a basis for a medical malpractice law claim. To establish your health care provider's liability, you must have expert medical malpractice testimony that no reasonable health care provider would have done what yours did and that your health care provider's negligence was a cause of injury or death. Find medical malpractice legal articles and contact a Nassau, New York medical malpractice law firm from the list of results on this page provided by Lawyers.com.