Starring cast:

Andrew McFarlane
as Dr Tom Callaghan
[1.01-1.16, 5.13-7.10]

Liz Burch
as Dr Chris Randall
[1.01-6.20]

Lenore Smith
as Kate Manning
[1.01-9.30]

Robert Grubb
as Dr. Geoffrey Standish
[1.17-9.30]

Peter O'Brien
as Sam Patterson
[2.01-5.18]

Brett Climo
as Dr David Ratcliffe
[5.01-8.05]

Nikki Coghill
as Sr. Jackie Crane
[8.01-9.30]

David Reyne
as Dr. Guy Reid
[8.01-9.30]

Christopher Stollery
as Capt. Johnno Johnson
[7.01-7.20 as a regular]
[8.01-9.30 starring]

Sarah Chadwick
as Dr. Rowie Lang
[8.09-9.30]
Regulars:

Max Cullen
as Horace "Hurtle" Morrison

Lewis Fitz-Gerald
as David Gibson
[1.01-1.26]

Bruce Barry
as George Baxter

Pat Evison
as Violet Carnegie
[1.01-3.16]

Mark Little
as Ron Miller
[1.01-1.16]

Maurie Fields
as Vic Buckley

Val Jellay
as Nancy Buckley

Terry Gill
as Sgt. Carruthers

Gil Tucker
as Joe Forrest
[1.01-1.26]

Carmel Millhouse
as Matron Fischer
[1.01-1.26]

John Frawley
as Dr Turner
[1.01-1.26]

Kylie Belling
as Sharon Herbert
[1.01-1.26]

Brian Mannix
as Max
[1.05, 7, 9, 11]

Frank Ottenson & Herb Krause
as Old Codger 1 & 2

Rebecca Gibney
as Emma Plimpton
[1.09-5.26]

Sydney Jackson
as Fr. Jackson
[from 1.17/2.05]

George Kapiniaris
as Demetrios "DJ" Goannides
[2.01-6.10]

Michaela Abay
as Zoe Buchanan
[2.05-2.17]

Mark Neal
as Marty Jarvis
[3.05-4.24]

Anita Cerdic
as Soula Polites
[3.08-3.14]

Shane Withington
as Mike Lancaster
[3.09-3.21]

Marie Redshaw
as Maggie Hutton
[3.15-4.24]

Simon Thorpe
as Larry O'Connor
[3.16-3.22]

Vikki Blanche
as Paula Patterson
[3.20-5.26]

Gerard Kennedy
as Luke Mitchell
[4.21-6.01]

Alex Papps
as Nick Cardaci
[5.15-7.10]

Tammy MacIntosh
as Annie Rogers
[6.01-7.20]

Justin Gaffney
as Gerry O'Neill
[6.02-6.20]

Beverley Dunn
as Clare Bryant
[6.11-9.30]

Melita Jurisic
as Dr. Magda Heller
[7.13-8.07]

Sophie Lee
as Penny Wellings
[8.07-9.30]

Paul Kelman
as Steve Macauley
[8.08-9.30]