Health insurance giant Highmark Inc. will spend up to $500 million to develop a new network of doctors, community hospitals and outpatient locations in Western Pennsylvania in addition to the $475 million it has promised to prop up West Penn Allegheny Health System, the Tribune-Review has learned. The network will include medical malls, ambulatory care centers, a health information exchange, partnerships with community hospitals and primary and specialty care centers, officials with the insurer said.
