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Health Care Service Corporation (HCSC) is a member-owned health insurance company in the United States. HCSC was formerly known as Hospital Service Corporation and changed its name to Health Care Service Corporation in 1975. The company was founded in 1936 and is based in Chicago, Illinois with a network of offices in the United States.
773: Chicago, covers most of the geographical area of Chicago except the downtown Chicago Loop, which is in area code 312. 815/779: Northern Illinois outside of the immediate Chicago area including Joliet, Kankakee, LaSalle, DeKalb, and Rockford. Area code 815 was overlaid with area code 779 in 2007. 847/224: North and northwest suburbs of ...
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917.
Area code 312. Coordinates: 41°52′48″N 87°37′54″W. All NPAs within Illinois. Area code 312 is a telephone area code in the North American Numbering Plan for the city of Chicago, including downtown, the Chicago Loop, and its immediate environs. The numbering plan area is completely surrounded by area code 773, which serves the rest of ...
Telephone prefix. A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme. In other countries, both the prefix and the ...
Blue Cross Blue Shield Tower. / 41.8848750°N 87.6199056°W / 41.8848750; -87.6199056. The Blue Cross Blue Shield Tower ( BCBS) is on the north end of Millennium Park along E. Randolph Street at the NE corner of Randolph and Columbus Drive, in Chicago, Illinois, United States. It is home to the headquarters of Health Care Service ...
Blue Cross Blue Shield Association. / 41.8864516; -87.6239771. Blue Cross Blue Shield Association, also known as BCBS, BCBSA, or The Blues, is a United States -based federation with 34 independent and locally-operated BCBSA companies that provide health insurance in the United States to more than 115 million people as of 2022.
Chicago Ridge is located at 41°42′9″N 87°46′43″W (41.702482, -87.778690). [6] According to the 2021 census gazetteer files, Chicago Ridge has a total area of 2.27 square miles (5.88 km 2 ), all land. [7] Located in Cook County, the village is 18 miles (29 km) southwest of the Loop.