Pulmonology involves the study and treatment of respiratory diseases and disorders. A pulmonary physician, or pulmonologist, treats diseases of the lungs, airways, and all other respiratory organs. The pulmonologist diagnoses and treats pneumonia, asthma, bronchitis, emphysema and other respiratory problems, and uses a variety of invasive and non-invasive diagnostic techniques to help patients.

Physicians in this specialty treat patients suffering from numerous diseases and illnesses, but some of the most common are Emphysema, Broncho-Esophagology, Pneumonia, Lung Disorders, cystic fibrosis, Asthma, Bronchitis, and pectus excavatum.

Doctor density varies by specialty and location. California has 1,413 practicing pulmonary doctors / pulmonologists. Broken out by city, pulmonology doctor density in Oakland is 19, in Oceanside is 4, in Ontario is 1, in Orange is 36, in Oroville is 3, and in Oxnard is 11.

California’s population is 36,142,137, and it is America’s third largest and most populous state. It also claims the highest and lowest altitudes in the lower 48 states. The lowest point in the country, Death Valley, is also home to the nation’s highest recorded temperature, 134 degrees. Tourists flock to this state for its many outdoor activities and attractions, including Universal Studios, Disneyland, Rodeo Drive shopping, the Golden Gate Bridge in San Francisco, wine country tours, and California’s numerous beaches and parks. Los Angeles is the nation’s second largest city, but California’s capital is Sacramento. The giant sequoias in California’s forests are among the oldest living things in the world, and a redwood in the Redwood National Park is said to be the world’s tallest tree, at 365 feet. California achieved statehood in 1850, and was named the Golden State after the beginning of the Gold Rush in 1848.

According to 2005 Census estimates, California has a population of 36,132,147. Of this population, 9,308,563 are under the age of 18 and 3,827,038 are at or above the age of 65.