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 Mechanic 1 guest appearances Madam Feldbloom 1 guest appearances Guillaume 1 guest appearances Frank Muresan 1 guest appearances Trish 1 guest appearances Dr. Butterworth 1 guest appearances Blind Otis Lemon 1 guest appearances Joe 1 guest appearances Jimmy 1 guest appearances Dr. Phil Stoessl 1 guest appearances Nurse 1 guest appearances Mrs. Beatrice Portmeyer 1 guest appearances Guidance Counselor 1 guest appearances Norman 1 guest appearances Animal Trainer 1 guest appearances Professor Laura Forrest 1 guest appearances Stuart Pelzman 1 guest appearances Gregory Pelzman 1 guest appearances Sasha Larkin 1 guest appearances Greg 1 guest appearances ⇤ « 7 8 9 10 11 12 13 14 15 16 » ⇥