I've never seen either of these gynaecologists so I can't personally recommend them, but I've heard of transfolk having had surgeries with them:
Dr Joseph Elbeaini
Suite 304
161 Bigge St
Liverpool 2170
NSW
Phone: 02 9822 7400
Fax: 02 9822 7411
Here's a write-up of someone's experience with him, as blogged on the website for ACT trans* organisation, A Gender Agenda.
I've also heard of Dr Anne Pike. More details about her here:
http://www.sah.org.au/specialist-details?id=407000
Good luck!