By Susan Jaffe  | November 29, 2013 |  Kaiser Health News produced in collaboration with 

Dorathy Senay’s doctor had some bad news after her last checkup, but it wasn’t about her serious blood disorder called amyloidosis. Her Medicare Advantage managed care plan from UnitedHealthcare/AARP is terminating the doctor’s contract Feb. 1. She is also losing her oncologist at the prestigious Yale Medical Group — the entire 1,200 physician practice was axed. Senay, 71, of Canterbury, Conn., is among thousands of UnitedHealthcare Medicare members in 10 states whose doctors will be cut from their plan network.

The company is the largest Medicare Advantage insurer in the country, with nearly 3 million members. More than 14 million older or disabled Americans are enrolled in Medicare Advantage plans, an alternative to traditional Medicare that offers medical and usually drug coverage but members have to use the plan’s network of providers.

“I have a rare incurable disease and these doctors have saved my life,” said Senay. “I am in good hands and I will not change doctors.”

…Medicare officials review the private plans every year to make sure they comply with network adequacy and other requirements, but the agency did not approve the reconfigured networks resulting from the new provider cancelations. Spokesman Raymond Thorn said the agency “is currently reviewing UHC and other plans’ provider networks and closely monitoring all areas that have experienced disruptions to ensure that beneficiaries have full, transparent and timely information and access to needed care.” [More from KHN] [More in USA Today]