Culinary Extra Clinic

Rosa Segovia, 59, is seen by health coach Veronica Jaime, left, and Dr. Eva Snow at the Culinary Extra Clinic. (Christina House / For The Times / September 18, 2013)

Teresa Garcia, weak and in pain, had all but given up on doctors when she came to a small clinic next to a former wedding chapel on the Strip.

"I never thought I would get better," the 55-year-old housekeeper said, recalling years of perfunctory physician visits that generated countless prescriptions but did little to slow the dangerous advance of her diabetes.

Today, under intense care from a team of social workers, nurses and a doctor who, like her, emigrated from Mexico, Garcia has learned to change her diet and closely monitor her disease. She has regular checkups. She has cut her blood sugar in half. She no longer needs to inject herself with insulin.

The model of medical care that is helping Garcia is built on a highly personal approach to patients and a high-tech system to track quality — something that is new for this city. A grim joke here long held that the best place to go for good healthcare was the airport.

Now, Las Vegas is emerging as a test of how much a community can improve chronically poor health by expanding insurance coverage and using models of medical care pioneered in healthier places.

"We are a prime example of what people see as problematic about the American healthcare system," said Larry Matheis, the former longtime head of the Nevada State Medical Assn. "That makes a lot of the ideas in health reform very attractive. … The challenge is going to be figuring out how to make it all work."

Starting this year, the Affordable Care Act guarantees insurance to tens of thousands of Las Vegas residents once effectively shut out of the health system. And leading hospitals, physician groups, unions and businesses are seeking to improve care by taking advantage of the coverage expansion.

The clinic Garcia visits has already inspired a similar facility in nearby downtown. And the Culinary Health Fund, a union health plan that runs Garcia's clinic, plans to build three more across the city.

Under another initiative in the city, a team of highly trained nurses is working to enhance medical care in nursing homes so fewer residents end up in the hospital.

Poverty and obesity are not as widespread here as in some of America's other least healthy communities. Nevertheless, improving care in Las Vegas is an immense task.

Before Nevada expanded its Medicaid program under the new health law, nearly 30% of working-age adults in greater Las Vegas lacked insurance. By comparison, in U.S. communities with the best health outcomes, fewer than 1 in 10 are uninsured.

The area also has a critical shortage of primary care doctors — half as many relative to the population as healthier regions of the Northeast and upper Midwest.

Las Vegas residents are far less likely than people in healthier communities to get cancer screenings, immunizations, blood-sugar tests and other recommended preventive care, even when they have a serious illness, according to data gathered by the Commonwealth Fund, a research foundation that studies healthcare systems.

They also are nearly twice as likely to die from illnesses that can be averted or controlled with timely medical care, including childhood measles, diabetes and colon cancer.

Outcomes here match those in the poorest parts of the Deep South and Appalachia, according to a review of healthcare data The Times conducted with help from public health researchers and visits to communities from Maine to Hawaii.

In a system shaped by low levels of coverage, the city's for-profit hospitals historically have sought paying patients for more lucrative care. Freeways are lined with billboards advertising short wait times at emergency rooms, a profitable way for hospitals to cash in on patients with coverage.

One doctor would call his insured patients "little ATMs," according to a physician who asked not to be identified in candidly describing a mindset he said is widespread in Las Vegas.

Medicare patients here get three times as many MRIs, CT scans and other imaging tests as patients in parts of the Midwest and New England, data show. Overuse of imaging can be harmful to patients, though profitable for providers.

"There are no controls on anything," said Dr. John Ruckdeschel, an oncologist at the University of Utah who formerly headed the Nevada Cancer Institute.

Patients shut out of the for-profit system often show up at the emergency room of University Medical Center, the city's overburdened public hospital.