Im a doctor, not a

Dr. Leonard McCoy (DeForest Kelley)
"I'm a doctor, not a bricklayer." (Star Trek: The Original Series "The Devil in the Dark")
"I'm a doctor, not an engineer." (Star Trek: The Original Series "Mirror, Mirror")
"I'm a doctor, not a mechanic." (Star Trek: The Original Series "The Doomsday Machine")
"I'm a doctor, not a coal miner." (Star Trek: The Original Series "The Empath")
"Look, I'm a doctor, not an escalator." (Star Trek: The Original Series "Friday's Child")

Dr. Julian Bashir (Alexander Siddig)
"I'm a doctor, not a botanist." (Star Trek: Deep Space 9 "The Wire")
"I'm a doctor, not an historian." (Star Trek: Deep Space 9 "Trials and Tribble-ations")
"I'm a doctor, not..." Garak interrupts (Star Trek: Deep Space 9 "Past Prologue")
Prometheus EMH Mark II (Andy Dick)
"I'm a doctor, not a commando." (Star Trek: Voyager "Message in a Bottle")
Enterprises EMH (Robert Picardo)
"I'm a doctor, not a doorstop." (Star Trek: First Contact)
Voyagers EMH (Robert Picardo)
"I'm a doctor, not a bartender." (Star Trek: Voyager "Twisted")
"I'm a doctor, not a voyeur." (Star Trek: Voyager "Parturition")
"I'm a doctor, not an engineer." (Star Trek: Voyager "Flesh and Blood")
"I'm a doctor, not a peeping Tom." (Star Trek: Voyager "Drone")
"I'm a doctor, not a counterinsurgent." (Star Trek: Voyager "Basics, Part II")
"I'm a doctor, Mr. Neelix, not a decorator." (Star Trek: Voyager "Phage")
"I'm a doctor, not a dragon-slayer." (Star Trek: Voyager "Bliss")
"I'm a doctor, not a database." (Star Trek: Voyager "Future's End, Part II")
"I'm a doctor, not a performer." (Star Trek: Voyager "Investigations")
"I'm a doctor, not a battery." (Star Trek: Voyager "Gravity")
"I'm a doctor, not a zoo-keeper." (Star Trek: Voyager "Life Line")
"I'm a doctor..."
...Torres: "...not an engineer. Right, but..." (Star Trek: Voyager "Prototype")
Dr. Doremus, coroner (Etienne Girardot)
"I'm a doctor, not a detective." (The Kennel Murder Case)
"I'm a doctor, not a magician." (The Kennel Murder Case) (less info)