Dr. Douglas `Doogie' Howser

Neil Patrick Harris

Vinnie Delpino

Max Casella

Thomas

Garvin Funches

Rita

Sheila R. Johns

Katherine O'Brien Howser

Belinda Montgomery

Pat

Julie Ow

Dr. David Howser

James B. Sikking

James

David Netter

Dr. Benjamin Canfield

Lawrence Pressman

Nurse Mary Margaret "Curly" Spaulding

Kathryn Layng

Verna

Toni E. White

Marlon

Ramon Choyce

Raymond Alexander

Markus Redmond

Jack McGuire

Mitchell Anderson

Sally

Kristen Nicole Smith

Wanda Plenn

Lisa Dean Ryan

Molly Harris

Shiri Appleby

Candace

Mayim Bialik

Woman Patient

Peggy Doyle

Movie Nurse

Jennifer Horton

Fiona Wilkes

Gwen E. Davis

30's Her

Lisa Freeman

Girl in Class

Shiva Gordon

P.K.

Brian Heidik

Cook

Homeselle Joy

Movie Doctor

Lawrence H. Toffler