Coronado Island physician, CA 92118, offering internal medicine, preventive health, and chronic condition management for adult patients. Dr. Ann Siefert provides thorough, relationship-driven medical care with a focus on long-term wellness and proactive health strategies, practicing within Coronado's specialist community alongside San Diego Heart & Vascular. A trusted island doctor accepting most major insurance. For lab work and bloodwork orders, Sharp Laboratory Services provides on-island phlebotomy.