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EmblemHealth was created in 2006 through the merger of Group Health Incorporated (GHI) and the Health Insurance Plan of Greater New York (HIP). GHI and HIP had been operating as separate companies in the New York region since 1937 and 1947, respectively. [3]
The all-number calling plan increased the number of permissible central office prefixes from 540 to potentially 800, but the first two digits of the central office code were still restricted to the range 2 to 9, and the eight combinations that ended in 11 were reserved as special calling codes. [32]
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. [1]
GHI still exists. Since the article is a stub, it is impossible to tell if the article is about the GHI that still exists or the parent company. The links imply that it is still about GHI. Vegaswikian 18:56, 11 July 2011 (UTC) Group Health Incorporated → EmblemHealth – Relisted.
When a customer decides to use toll-free service, they assign a Responsible Organization (RespOrg) to own and maintain that number. The RespOrg can be either the IXC that is going to deliver the majority of the toll-free services or an independent RespOrg. [6] When a toll-free number is dialed, each digit is analyzed and processed by the LEC.
UnitedHealthcare Corporation was founded in 1977 to purchase Charter Med and create a network-based health plan for seniors. [6] It became a publicly traded company in 1984 and changed its name to UnitedHealth Group in 1998. [7]
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. Health Care Service Corporation is the licensee of the Blue Cross and Blue Shield Association for five states ...
The number consists of a 7-character base and a 2-character suffix. The base Health Industry Number consists of 6 alphanumeric characters (0-9, A-Z) followed by a single modulo 36 check digit. System developers can confirm the validity of a Health Industry Number by summing the values of the first six characters (where 0=0 ... 9=9, A=10, B=11, ...