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These books were in my middle school library. It was a series of at least 2 (possibly more) books about a young man who was an alien. He passed as human and only a few people knew, including some older man who seemed like a father figure.
Because he was an alien he had ESP-style psychic powers (telekinesis and others). At some point he uses them to cause or stop or save someone from a car crash. There was definitely a car or bus accident.
I believe the planet his people were from may have allegedly been a system orbiting a star in the Orion constellation. It no longer existed, I believe -- I remember specifically the text making a point that the star it had orbited was gone, but that they could still see it up until a certain point in one of the books because speed-of-light, etc.
I should add that I remember it as being pretty much contemporary (roughly set in the 80's or 90's)--not set in the future. There wasn't, apparently, much space travel or anything (even though there must have been, or how else did he get there).