I am a male bottom here, if i think i may have came into contact with someone who has hpv what kind of doctor should i visit for positive diagnosis ?

Not necessary: The problem is even if you know you have hpv, there's no reasonable treatment for prophylaxis. That being said, hpv doesn't necessarily mean symptomatic infection; the majority of cases (depending on strain of hpv) are asymptomatic and self-resolving. Hpv testing can be done really only when there is a tissue sample (such as pap smear) upon which to run it.

CRS: Your family physician or if you want a specialist a colon and rectal surgeon.