Dr. Alex Reid (85 Episodes)

Dr. Maggie Lin (85 Episodes)

Dr. Charlie Harris (85 Episodes)

Dr. Zachary Miller (85 Episodes)

Dr. Shahir Hamza (85 Episodes)

Dr. Dawn Bell (72 Episodes)

Dr. Dana Kinney (49 Episodes)

Dr. Joel Goran (49 Episodes)

Dr. Melanda Tolliver (49 Episodes)

Dr. Dev Sekara (36 Episodes)

Dr. Cassie Williams (36 Episodes)

Dr. Tom Reycraft (32 Episodes)

Victor Reis (31 Episodes)

Dr. Gavin Murphy (31 Episodes)

Dr. Emanuel Palmer (18 Episodes)

Dr. Sydney Katz (18 Episodes)

Nurse Cabrera (11 Episodes)

Jonathan (6 Episodes)

Bree Hannigan (4 Episodes)

Dr. George Baumann (3 Episodes)

Dr. Jason Kalfis (3 Episodes)

Bill Helperin (1 Episodes)

Elizabeth Grant (2 Episodes)

Nurse Jackson Wade (2 Episodes)

man (1 Episodes)

Young Alex (1 Episodes)

Laura (1 Episodes)

David (1 Episodes)

Anna Danko (1 Episodes)

Ian Taft (1 Episodes)

Paule Kiyimba (1 Episodes)

Dr. Rian Larouche (1 Episodes)

Katie (1 Episodes)

Deshawn Lewis (1 Episodes)

Officer Daven (1 Episodes)

Injured Runner #2 (1 Episodes)

Charlie's Mother (1 Episodes)

Summer (1 Episodes)

Caroline (1 Episodes)

Aidan (1 Episodes)

Justin Srinivasan (1 Episodes)

Taylor Fenn (1 Episodes)

Eric Hawes (1 Episodes)

Astrid Ray (1 Episodes)

Riley Stiles (1 Episodes)

Russell Birk (1 Episodes)

Mr. Salt (1 Episodes)

Allison Davis (1 Episodes)

Spirit Damon (1 Episodes)

Hannah (1 Episodes)

Danny Kilbride (1 Episodes)

Kyle (1 Episodes)

Sam Riff (1 Episodes)

Doug Wilkins (1 Episodes)

Claudia (1 Episodes)

Nadia Hope (1 Episodes)

Gino (1 Episodes)

Megan (1 Episodes)

Sheila Birk (1 Episodes)

Jackie (1 Episodes)

Craig (1 Episodes)

Karn (1 Episodes)

Tatum (1 Episodes)

Eli King (1 Episodes)

Lisa Rundel (1 Episodes)

Bart Dolson (as Matt Lemche) (1 Episodes)

Bonnie Drummond (1 Episodes)

Spirit Miles (1 Episodes)

Kym Spencer (1 Episodes)

Security Guard (1 Episodes)

Rebecca Friedman (1 Episodes)

Brianna Pierre (1 Episodes)

Charlie's Aunt (1 Episodes)

Mara Avery (1 Episodes)

Violet Devonshire (1 Episodes)

Dr. Neil Rocca (1 Episodes)

Bridgette Garvey (1 Episodes)

Louie Garvey (1 Episodes)

Nurse Alice (1 Episodes)

Cade (1 Episodes)

Dudley Devonshire (1 Episodes)

Dr. Jeremy Bishop (1 Episodes)

Reba (1 Episodes)

Molly Kinney (1 Episodes)

Russ (1 Episodes)

Tracy (1 Episodes)

Maya (1 Episodes)

Dr. Stroman (1 Episodes)

Medevac EMS (1 Episodes)

Vicky Avery (1 Episodes)