?Dr. Ragan has been a member of the Nevada County medical community since 2002, practicing Internal Medicine first with Gold Country Hospitalists at Sierra Nevada Memorial Hospital and now as a member of Sierra Care Physicians. Internists are "Doctors for Adults." They undergo three years of specialized study and training after graduation from medical school focusing on the prevention, diagnosis and treatment of diseases that affect adults. Dr. Ragan is active in the community with volunteer organizations supporting outdoor recreation and trails for biking and hiking.