Main Characters Douglas "Doogie" Howser 97 main appearances Vinnie Delpino 97 main appearances Dr. David Howser 82 main appearances Katherine O'Brien Howser 81 main appearances Nurse Mary Margaret "Curly" Spaulding 69 main appearances Dr. Benjamin Canfield 66 main appearances Janine Stewart 23 main appearances Raymond Alexander 33 main appearances Dr. Jack McGuire 33 main appearances Wanda Plenn 19 main appearances
Recurring Guest Characters Roger 1 guest appearances Waitress 1 guest appearances Muscle Man 1 guest appearances Nurse Kidd 1 guest appearances Mr. Stewart 1 guest appearances Dr. Johnathan Reardon 1 guest appearances Heather 1 guest appearances Girl in Crowd 1 guest appearances Female Resident 1 guest appearances Bradford Eisner 1 guest appearances Karl 1 guest appearances Bob 1 guest appearances Al 1 guest appearances Roy Lester 1 guest appearances Lisa 1 guest appearances Joanne Lester 1 guest appearances Marge Lester 1 guest appearances Heather 1 guest appearances Dennis 1 guest appearances Clayton Wilburn 1 guest appearances ⇤ « 8 9 10 11 12 13 14 15 16 17 » ⇥