Pediatric allergy-immunology is the field of medicine that deals with problems caused by allergies and other disorders of the immune system. A pediatric allergist-immunologist evaluates, diagnoses, and manages disorders of the immune system in infants, children and adolescents. Some conditions that this specialist treats include asthma, rhinitis, eczema, and allergic reactions to drugs, foods and insect bites. Other areas covered by an allergist-immunologist are immune deficiency diseases, problems related to autoimmune diseases, and organ transplantation.

Doctor density varies by specialty and location. California has 55 practicing pediatric allergy and immunologists. Broken out by city, pediatric allergy and immunology doctor density in Agoura Hills is 1, in Alhambra is 1, in Anaheim is 2, in Auburn is 1, in Bakersfield is 1, in Chico is 1, in Colton is 1, in Costa Mesa is 1, in El Cajon is 1, in Emeryville is 1, in Escondido is 1, in Folsom is 1, in Fremont is 1, in Fresno is 1, in Gilroy is 2, in Granada Hills is 1, in Hemet is 1, in Huntington Beach is 1, in Irvine is 1, in La Jolla is 3, in Laguna Hills is 1, in Lake Forest is 1, in Los Angeles is 12, in Menlo Park is 1, in Merced is 1, in Mission Hills is 1, in Mission Viejo is 1, in Moreno Valley is 1, in Mountain View is 1, in Murrieta is 1, in Napa is 1, in Northridge is 1, in Novato is 1, in Oakland is 1, in Orange is 2, in Orangevale is 1, in Palm Springs is 1, in Palmdale is 1, in Palo Alto is 3, in Pleasanton is 1, in Ridgecrest is 1, in Roseville is 1, in Sacramento is 2, in San Clemente is 1, in San Diego is 3, in San Francisco is 6, in San Jose is 4, in San Rafael is 1, in Sanger is 1, in Santa Ana is 1, in Santa Cruz is 1, in Santa Monica is 1, in Simi Valley is 1, in Stanford is 1, in Sun Valley is 1, in Sunnyvale is 1, in Tarzana is 1, in Temecula is 1, in Torrance is 2, in Tustin is 1, in Valencia is 1, and in Yucca Valley is 1.

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.