Carol Cassella is an American novelist and practicing anesthesiologist. She is best known for her works of medical fiction, which combine her professional medical expertise with her storytelling. Her novels often explore complex ethical issues, the complications of human relationships, and the intersections between medical science and personal choices. Her debut novel, "Oxygen," was published in 2008 and received critical acclaim for its gripping narrative and insightful depiction of the medical world. Cassella followed up with several other books, such as "Healer" and "Gemini," which continue to delve into themes of medicine, morality, and the human condition. In addition to her writing, Cassella's medical practice and her experiences as a physician significantly influence her literary work, adding depth and authenticity to her stories.