Guest Stars Debbie Allen as Dr. Catherine Avery Anthony Hill as Dr. Winston Ndugu Richard Flood as Dr. Cormac Hayes Sherri Saum as Allison Robin Brown Rya Kihlstedt as Claire Tyler Jacob Moore as Dane Pinetti Page Leong as Dr. Cynthia Cu Elizabeth Grullon as Abigail Hayes Co Starring Aniela Gumbs as Zola Grey Shepherd Nicolas Hedges as Liam Hayes Jayden Haynes-Starr as Austin Hayes Riley Looc as Young Liam Andriana Manfredi as Medical Product Rep Cairo Philip as Young Austin