Help my son Alex ( hit and run victim)

Our eldest son, Alex, was involved in a hit-and-run bicycle accident two weeks ago in Philadelphia (corner of 15th and Christian Street). He was left unconscious and bleeding by the roadside with the following injuries: broken ribs, a lacerated liver, broken scapula, internal bleeding, broken cheek bone and a concussion. We were unable to find the aggressor in the vehicle, which has devastated our family. Fortunately, someone called 911 and Alex was brought to the hospital. Due to the circumstances, he has been left with numerous medical bills. We are looking to raise $5000 to help alleviate hospital costs and follow-up visits, including physical therapy. Any help you can give will be greatly appreciated.