What is a Complaint? A complaint is a statement that a situation is unsatisfactory or unacceptable. In healthcare, it can be about the quality of care you got or are getting. For example, you can file a complaint if you have a problem calling the plan, or you're unhappy with how a staff person at the plan treated you. What is an Appeal? An appeal is to make a serious or urgent request, typically to the public. You file an appeal if you have an issue with a plan's refusal to cover a service, supply, or prescription. Filing a Complaint If you have concerns about the quality of care or other services you get from a Medicare provider and if you are not satisfied, you can always file a complaint. How you will file depends on what your complaint is all about. It can either be: A doctor, hospital , or provider Your health or drug plan Quality of your care Your dialysis or kidney transplant care Durable medical equipment If you need help filing a complaint, you can contact ...