Universal Health Services Inc. has adopted an aggressive strategy for dealing with health insurance companies, writes Harold Brubaker for The Philadelphia Inquirer. The CFO of the King of Prussia health provider said UHS can't treat everybody, so it is focusing on patients with better insurance. "We've been going to our lowest payers and either demanding increases from them or canceling those contracts that we view to be inadequate and simply admitting patients whose insurance will pay us more," Steve Filton said. "In an environment where we can only treat a limited number of patients, we can be more selective about whom we treat and the fairness of what we think we're being paid," he said during a conference call on the company's second-quarter earnings.