<human>: Condense the text into a few key points

My bio father left my mother when she was five months pregnant with me. A real winner, I know. She told him that she was keeping the baby, when he asked, so he knows he has a child out in the world. But as far as I know, he doesn't even know if I was a boy or a girl. His name is on my birth certificate, and now at age 27 I have been trying to track him down, for medical history (I have been having a few health problems lately).... and I think I found him. 

Through some googling, I found a resume online with the same name. It's a sort of common name, but the resume goes all the way back to a job in 1983-1986 in the same town where I was conceived/born, doing the kind of work I vaguely recall my mom mentioning him doing. I haven't found an age, but his photo looks about the same age as my mom. I found a LinkedIn account and email address, but not much else. 

Should I email? What other steps could I take to make sure this is the right guy?? I don't want to come out of nowhere for some poor guy that turns out not to actually be my father. My mom is pretty closed-mouthed about the subject, so I don't feel comfortable asking her to verify - she doesn't know I'm looking. Has anyone out there ever tracked down a parent? How did you decide to approach them?
<bot>: I think I found my bio father online, but can't be sure. How can I make sure it's the right dude before contacting him? How have other Redditors gone about contacting long last parents?