Ted Doolittle, who heads Connecticut’s Office of the Healthcare Advocate, has fielded angry complaints from residents, but he sees few options available to officials. “A lot of this is too little and too late,” he said.

Finding new paths for growth

The latest giant hospital consolidations continue to stir concerns. Dignity Health and Catholic Health Initiatives, two large chains, are expected to become one of the nation’s largest groups — with 139 hospitals in 28 states — by the end of the year. And two of Texas’ biggest systems, Baylor Scott & White Health and Memorial Hermann Health System, recently announced plans to combine.

The New Haven area has witnessed the most significant decline in competition. Yale New Haven Health, one of the largest hospital groups in Connecticut, took over the only competing hospital in the city and has also aggressively expanded along the state’s coast. The group recently added another hospital to its collection, merging Milford with its Bridgeport location.

Although the price of a hospital admission in the New Haven-Milford area was already three times higher than in other parts of the state, prices surged by 25 percent from 2012 to 2014, compared with 7 percent elsewhere in the state, according to the Petris Center.

In the national analysis, a third of the metropolitan areas experienced increases in the cost of hospital stays of at least 25 percent from 2012 to 2014, from roughly $12,000 to at least $15,000.

Prices rise even more steeply when these large hospital systems buy doctors’ groups, according to Richard Scheffler, director of the Petris Center.