What if a person has a concern about the quality of care received while on Medicare?

If you have a concern about the quality of care received while on Medicare, contact your state Quality Improvement Organization, or QIO. QIOs are groups of doctors and health care experts who check on and improve the care given to people with Medicare. To get the address and phone number of the QIO in your state or territory, call 1-800-Medicare (1-800-633-4227). TTY users should call 1-877-486-2048.