Lassen Medical Clinic - Cottonwood is a medical group that offers many services, including family practice/osteopathic medicine, pediatrics, and internal medicine. Visit Lassen Medical Clinic - Cottonwood located at 20833 Long Branch Dr, Cottonwood, CA. This Cottonwood medical group is one of the best in California. As part of the Dignity Health network, Lassen Medical Clinic - Cottonwood is dedicated to delivering high quality, compassionate care and access to Cottonwood and nearby communities.