
I hear you're a DERMATOLOGIST.
The Big Bang Theory Season 8, Episode 4

Are you still dating that DERMATOLOGIST?
The Big Bang Theory Season 8, Episode 22

An appearance
by George Lucas's DERMATOLOGIST.
The Big Bang Theory Season 10, Episode 6

My uncle is his DERMATOLOGIST,
and Stan's doing him a favor.
The Big Bang Theory Season 3, Episode 16

Oh, yes, you're
the DERMATOLOGIST.
The Big Bang Theory Season 7, Episode 23