El señor doctor

Cantinflas

Salvador Medina / Chava

Marta Romero

Laura Villanueva

Miguel Ángel Álvarez

Dr. Miguel Villanueva

Prudencia Grifell

Señora Martínez

Wolf Ruvinskis

Papá de Beto

Guillermo Zetina

Dr. Marín

Tony Carbajal

Dr. Pablo Montero

Pepito Velázquez

Beto

Carlos Riquelme

Administrador del hospital

Rosa Elena Durgel

Mamá de Beto

Alberto Catalá

Paciente ambidextro

Consuelo Monteagudo

Suegra de neurótica

José Chávez

Isidro Martínez

Paz Villegas

Paciente viejita coqueta

Ada Carrasco

Doña Lola

Arturo Castro 'Bigotón'

Comisario del pueblo

Guillermo Bravo Sosa

Paciente malnutrido (uncredited)

Margarita Delgado

Enfermera (uncredited)

Pedro Elviro

Paciente con television (uncredited)

Carmelita González

Paciente neurótica (uncredited)

Ramón Valdés

Paciente vendado (uncredited)

Alejandro Suárez

Hippie en cantina (uncredited)

Alfonso Zayas

Hippie en cantina (uncredited)

Jorge Zamora

Hombre en cantina (uncredited)

Miguel M. Delgado

Director

Américo Fernández

Assistant Director

Luis Gaytán

Script Supervisor

Fernando Galiana

Writer

Miguel M. Delgado

Screenplay

Jacques Gelman

Producer

Fidel Pizarro

Production Manager

Rosalío Solano

Director of Photography

Carlos León

Additional Writing

Raúl Lavista

Original Music Composer

Jorge Busto

Editor

Manuel Fontanals

Production Design