New York University's Langone Medical Center in New York City is considered in-network for relatively few of the health plans offered in the state marketplace. Glen Argov/Landov hide caption

itoggle caption Glen Argov/Landov

One person who got a letter canceling his health insurance was Rep. Cory Gardner, R-Colo. He holds up the letter during a congressional hearing Wednesday on insurance problems. He says his family chose to buy private insurance rather than use the congressional plan. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP