Mark MacClaine
Michael Dietz
Michael Dietz as Mark MacClaine
The Bold and the Beautiful
Portrayed by: Zachariah Koslow-Schillace (1988-1992)
Michael Dietz (2002-2003, 2004 & 2005)
Duration: 1988-1992, 2002-2003, 2004 & 2005
First appearance: December 14, 1988
Last appearance: July 27, 2005
Cause/reason: Left town
Created by: William J. Bell
Gender: Male
Born: December 14, 1982
(originally December 14, 1988)
Occupation: E.R. Doctor
Residence: Unknown
Parents: Clarke Garrison
Margo MacClaine
Siblings: C.J. Garrison
Marital status: Single
Grandparents: Ben MacClaine (deceased)
Helen MacClaine (deceased)
Aunts & uncles: Jake MacClaine
Romances: Bridget Forrester (2003)

Dr. Mark MacClaine is a fictional character on the CBS daytime soap opera The Bold and the Beautiful.

Actor History:

  • Zachariah Koslow-Schillace (1988-1992; recurirng)
  • Michael Dietz (10/2002-01/2003; contract & 01/2003-07/2005; recurring)

Character History:

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