Ending the Medicare Disability Waiting Period Act of 2004 - Amends title II (Old Age, Survivors and Disability Insurance) (OASDI) of the Social Security Act (SSA) to: (1) phase out the waiting period for disabled individuals to become entitled to Medicare benefits under SSA title XVIII (Medicare); and (2) eliminate the waiting period for individuals with life-threatening conditions to become entitled.
Directs the Secretary of Health and Human Services to request the Institute of Medicine of the National Academy of Sciences to study the range of disability conditions that can be delayed or prevented if individuals receive access to health care services and coverage before the condition reaches disability levels.