Is United Healthcare A Medicare Hmo? 
It depends . Or , yes , and no . United Healthcare offers co-branded Medicare plans endorsed by AARP . Their policy line includes Medicare supplement -LRB- Medigap -RRB- , Medicare Advantage and PDP -LRB- prescription drug plans or Medicare Part D -RRB- . Their Advantage plans can include an HMO offering , a PPO offering or PFFS , or all three choices . 