Molly Parker Dr. Amy Larsen Actor Omar Metwally Dr. Michael Hamda Actor Amirah Vann Dr. Gina Walker Actor Jon-Michael Ecker Dr. Jake Heller Actor Anya Banerjee Dr. Sonya Maitra Actor Patrick Walker Dr. Theodore "TJ" Coleman Actor Charlotte Fountain-Jardim Katie Hamda Actor Felicity Huffman Dr. Joan Ridley Actor Claire Armstrong Nurse Julie Kenner Guest Star Connie Miu Nurse Liz Kwon Guest Star Sarah Allen Nora Hamda Guest Star Douglas Nyback Dr. Peter Douglas Guest Star Christie Stewart Dr. Monica Barrett Guest Star Allan Dobrescu Tech Darrin Amalia Guest Star Emma Pfitzer Price Dr. Hannah Clark Guest Star Dale Whibley Seth Harper Guest Star Kari Wong Mila Chen Guest Star Ben Carlson Dr. David Rose Guest Star Geoffrey Whynot Matt Guest Star Sydney James Harcourt Matt Guest Star Heather Hanson Cathy Harper Guest Star Matthew Bennett Dr. Brian Clark Guest Star Michael Riley Grant Guest Star Catherine McGregor Kerry Clark Guest Star Daniel Gravelle Charlie Clark Guest Star Melanie Lachman Brenda Tan (Gina's Assistant) Guest Star Martha Girvin Edie Guest Star Barbie Kligman Executive Producer Hank Steinberg Executive Producer Erwin Stoff Executive Producer