Daniel Kalla is a Canadian author and physician. He has written several popular novels in the thriller and historical fiction genres, all with medical themes. He was the director of Emergency Medicine at St. Paul's Hospital in Vancouver, British Columbia.

Both Kalla's father and grandfather were also practicing physicians; his grandfather fled Czechoslovakia weeks prior to the Nazi annexation of that country in 1939. Kalla was born in Vancouver on May 4, 1966. He attended the University of British Columbia, where he studied math as an undergraduate, and received his M.D. He also took a screenwriting course at Simon Fraser University, which encouraged his writing ambitions. His first novel, Pandemic, was inspired by his experiences screening potential SARS patients in Vancouver during the 2003 outbreak. He went on to head the Emergency Medicine departments at two Vancouver hospitals. He is an Associate Clinical Professor at the University of British Columbia. As of 2025, he has published sixteen novels with three publishers, Tor, HarperCollins, and Simon & Schuster. He has used a recurring character, Dr. Franz Adler, in three of his novels.

Bibliography Pandemic, Tor, 2005 Resistance, Tor, 2006 Rage Therapy, Tor, 2006 Blood Lies, Forge (Tor) 2008 Cold Plague, Forge (Tor), 2008 Of Flesh and Blood, Forge (Tor), 2010 The Far Side of the Sky, HarperCollins, 2011 Rising Sun, Falling Shadow, HarperCollins, 2013 Nightfall Over Shanghai, HarperCollins 2015 We All Fall Down, Simon & Schuster, 2019 We All Fall Down (About the Book) (Simon and Schuster). Accessed March 30, 2019. The Last High, Simon & Schuster, 2020 Lost Immunity, Simon & Schuster, 2021 The Darkness in the Light, Simon & Schuster, 2022 Fit to Die, Simon & Schuster, 2023 High Society, Simon & Schuster, 2024 The Deepest Fake, Simon & Schuster, 2025

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