Endocrinologist, baby. They are the best suited not a psychiatrist and a GP can rewrite scripts but isn't ideal for starting or changing treatment. Of course I assume the endo is willing, adaptable and isn't an ass. Most gender programs in my country can get the unwilling, ridged ass stamp but if they work for you, cool. Some cases of HRT are so simple even a GP could do it but they aren't ideal.
Dennis- I agree with Mister, that just ain't normal.
->-bleeped-<-boy