About a year before the birth of Obamacare, Dr. Keith Smith, director of the Surgery Center of Oklahoma, posted all the prices for his center’s surgeries online.

Today, he’s in expansion mode, looking to build two more operating rooms. His fastest-growing group of patients? Obamacare enrollees.

Though armed with Obamacare health insurance plans, the patients are saddled with high deductibles. Looking for alternatives, some of them fly from around the country to the Surgery Center of Oklahoma, where the cost of care and travel together amounts to less than their deductibles under their Affordable Care Act plans.