If you don't want to keep this plan, or to have Medicare enroll you in another drug plan, call 1-800-MEDICARE (1-800-633-4227), 24 hours a day, 7 days a week, or the plan provider. TTY users should call 1-877-486-2048.
Burial Assistance. The Burial Assistance Program offers assistance to income eligible Washington, DC residents only who need help with funeral costs. Economic Security Administration (ESA) provides up to $800 toward funeral services or $450 toward the cost of cremation. Families receiving this assistance must use an ESA identified undertaker.
You ask a good question about something that probably many people have wondered. Although not a state law, the state allows cemeteries to create their own ordinances and burial requirements regarding a vault or burial container for the casket. You're right about the price range starting around the $600 price range.