Robin Williams as Hunter 'Patch' Adams

Monica Potter as Carin Fisher

Philip Seymour Hoffman as Mitch Roman

Daniel London as Truman Schiff

Bob Gunton as Dean Walcott

Harve Presnell as Dean Anderson

Peter Coyote as Bill Davis

Michael Jeter as Rudy

Josef Sommer as Dr. Eaton

Irma P. Hall as Joletta

Barry Shabaka Henley as Emmet

Frances Lee McCain as Judy

Daniella Kuhn as Adelane

James Greene as Bile

Harold Gould as Arthur Mendelson

Bruce Bohne as Trevor Beene

Harry Groener as Dr. Prack

Steven Anthony Jones as Charlie

Richard Kiley as Dr. Titan

Douglas Roberts as Larry

Ellen Albertini Dow as Aggie

Alan Tudyk as Everton

Ryan Hurst as Neil

Peter Siteri as Chess Man

Don West as Instructor

Greg Sestero as Jaime

Jason Aaron Baca as Patch Pirate

Ismael 'East' Carlo as Hispanic Father

Diane Amos as Older Waitress

Andy Arness as Orderly (uncredited)

Renee Rogers as Receptionist

Dot-Marie Jones as Miss Meat

Ralph Peduto as Organizer

Norman Alden as Truck Driver

Sonya Eddy as Older Waitress

Domenique Lozano as Passerby

Ken Hoffman as Big Texan

Roy Conrad as E.R. Doctor

Jay Jacobus as Jack Walton

Geoff Fiorito as 3rd Year Student

Samuel Sheng as 3rd Year Student

Kathleen Stefano as Margery

Piers Mackenzie as Dr. Hashman

Alex Gonzalez as Hispanic Boy

Jake Bowen as Bryan

Richard J. Silberg as Psych Patient

James Anthony Cotton as Psych Patient

Michael X. Sommers as Psych Patient

David Fine as Psych Patient

James Carraway as Psych Patient

J. Stephen Coyle as Psych Patient

Wanda McCaddon as Woman in Lobby

Wanda Christine as Nurse Klegg

Lorri Holt as Pediatric Nurse

Stephanie Smith as Laughing Nurse

Mary DeLorenzo as Nurse

Vivis Colombetti as Hysterical Woman (as Vivis)

Donna Kimball as Waitress

Lydell M. Cheshier as Younger Man

Kelvin Han Yee as Orderly (as Kelvin Yee)

Doreen Foo Croft as Asian Woman (as Doreen Chou Croft)

Bill Roberson as Fred Jarvis

Randy Oglesby as Pinstriped Man

Vilma Vitanva as Maria (as Vilma Vitanza)

Bonnie Johnson as Walcott's Secretary

Karen Pavlick as Mrs. Davis (as Karen Michel)

James Allen as Ed

Katherine Fitzhugh as Mrs. O'Bannon (as Katherine A. Fitzhugh)

Kyle Timothy Smith as Davis Son

Jonathan Holder as Davis Son

Shannon Orrock as Receptionist

George Lee as Boardroom Doctor (as George Lee Masters)

Dan P. Hannafin as Boardroom Doctor (as Daniel P. Hannafin)

Roger W. Durrett as Boardroom Doctor

Ralph David Westfall as Gynecologist

Thom McIntyre as Gynecologist

Michael Stanton Kennedy as Gynecologist (as Michael Kennedy)

David Acuff as Dr. Anderson (uncredited)