Do a search for gynecologist here (search box is in the upper right corner) and you'll see lots of recommendations.
Don't stress too much about insurance. It is backdated to your day of arrival. Let's say you are arriving 15 March but you don't sort insurance out until end of March. Even if you visit the doctor on your very first day you'll be covered. As you're already pregnant you might not be able to get supplemental/private insurance, but you'll get the basic and it's certainly adequate for pregnancy and birth.