Caduceus Medical Group (Irvine): Caduceus is a community-based multi-specialty medical group practice and management services company. Caduceus is owned by its doctors and is unique in its independence from interference by health plans or hospitals. Caduceus utilizes guaranteed access to care as a cornerstone of its philosophy. SAME DAY VISITS and ONLINE CONCIERGE SERVICES are an example of the innovative approach Caduceus takes to the delivery of health care. Caduceus encourages communication with patients through its smartphone App (iPhone or Android), and seeks to educate its patients through the monthly e-newsletter. Many of our patients have been with our doctors for more than 20 years. We are proud to be your preferred physicians of choice.