About Dr. McCaskill

Rejan C. McCaskill, MD, FACP, is a Board-Certified Internal Medicine Physician with over two decades of experience providing exceptional, patient-centered care. She received her medical degree from the University of California, Irvine and completed her Internal Medicine Residency at Providence Portland Medical Center in Oregon. 

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Dr. McCaskill was elected to be a Fellow of the American College of Physicians (FACP), an honor recognizing her ongoing leadership, clinical excellence, and contributions to the practice of medicine. She currently serves as an ACP Governor for Southern California, where she champions high-quality, compassionate care and supports both patients and physicians through advocacy, mentorship, and education. Dr. McCaskill is a member of the American College of Physicians, the Orange County Medical Association, and the California Medical Association. 
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Known for her warm, attentive approach, Dr. McCaskill takes the time to listen, understand, and partner with each patient to guide them through every stage of their health journey. She remains dedicated to ongoing learning, regularly participating in continuing medical education to bring the most current medical knowledge into her practice.
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​Outside the office, Dr. McCaskill loves to spend time with her wonderful husband and two amazing children. She enjoys reading, traveling, and being outdoors.
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Dr. McCaskill looks forward to meeting you and working with you to achieve your health goals.