Was heißt »Fachärztin« auf Englisch?

Das Substantiv »Fachärztin« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Männliche Wortform

Tom has to see a specialist.
Tom is a registered eye specialist.
Where can I find a registered eye specialist in this city?
Where can I find a registered eye specialist in this town?
Tom is an ENT specialist.
Tom is an ear, nose and throat specialist.
He's a specialist in this area.
He's a specialist in this field.
He needs to see a specialist.
He must see a specialist.
He has to see a specialist.
He's got to see a specialist.
He's got an appointment with the eye specialist.
He has an appointment with the eye specialist.
She is a specialist in orthopaedics.
He is a specialist in orthopaedics.
Mike is a 52-year-old web content specialist who has been sober since 2012.
Former horse trainer assistant Kayla Lanning had to drive 85 miles (136 km) to deliver twins last year. They are now being treated by a specialist at yet another hospital, 76 miles (122 km) away.
I wonder whether or not Tom has ever considered going to a specialist.
I wonder if Tom has ever considered going to a specialist.