How long is the Medical examination good for in Pa. I believe it is 2 years ,the Dr. thinks it's 1 year. I'm getting back into the drivers seat and I'm certain it is 2.

They're good for 2 yrs unless you have certain medical conditions which would limit it to yearly.

it can be as long as 2years or as short as 3 months

Is the doctor DOT certified to give the physicals? Seems to me if he or she was....they would already know that answer.

Its 2 years without any health issues, and if issues such as high BP, etc are present it can be for 1 year, 6 mos, or 3 months depending on the illness or condition.