People might worry about that here too, except that you'd have to worry about the female MD's equally, so what are ya gonna do? I guess they could have a whole fleet of eunuch gynos.
Husbands are not generally as uncomfortable with Lesbians checking out their wives as they are with high status men doing it.
I greatly prefer woman OB/GYNS myself, although there is one man I am very comfortable with.
As for worrying equally about female MDs, do you mean lesbians? I’ve been to a lesbian breast specialist; she was a fantastic doctor - no sexual vibes whatsoever.
Lesbians in general are far less sexually aggressive or inappropriate than heterosexual men in general. This is experience speaking, and please note the “in general.”