Kidney-dialysis titan DaVita defends patient care, business practicesBy Christopher N. Osher, Jennifer Brown and Michael Booth
The Denver Post
POSTED: 05/07/2011 11:24:05 PM MDT
The relocation to Denver last year of kidney-dialysis titan DaVita was good news to a local economy battered by the recession.
But as the Fortune 500 company's $101 million, 14-story corporate headquarters rises in Lower Downtown, it continues to battle questions about its business practices.
Chief among the accusations, raised in federal investigations and lawsuits, is that DaVita overused a lucrative anemia drug called Epogen in order to receive higher government reimbursements.
The Food and Drug Administration has warned since 2007 that the drug, routinely used to help anemic patients on dialysis, also can increase the risk of death when used at certain levels.
DaVita officials energetically defend their company and say they never put patients at risk.
They say that doctors ultimately decide how much Epogen to use and that the company's protocols on the drug's use are aimed solely at keeping patients healthy. They said a corporate recommendation in December to use less of the drug was tied to evolving science and not to a reduction in government reimbursements that took effect three weeks later.
"DaVita has done, in my view, a spectacular job of improving — in fact, year-after-year improvement in all the clinical outcomes that we monitor," said Dr. Allen Nissenson, the company's chief medical officer.
DaVita executives also point out that investigations are common in the health care industry and that the company has not been prosecuted or had to settle any federal claims. Meanwhile, some of DaVita's competitors, including chief rival Fresenius Medical Care North America, have settled with federal prosecutors.
Still, the investigations into DaVita continue.
In Colorado, court documents show federal investigators subpoenaed records in December from a health care consulting company that works with DaVita. The investigation looks at whether DaVita submitted "false or otherwise improper claims" to Medicare and Medicaid.
According to DaVita, that subpoena is related to an investigation by the Dallas office of the Inspector General for the Department of Health and Human Services, which also is probing DaVita's financial relationships with doctors who refer patients to DaVita clinics.
In addition, the U.S. attorney's office in St. Louis is conducting a probe into Medicare reimbursements, including for the drug Epogen, that went to the company.
Kent Thiry, DaVita's chief executive, said in a February 2010 earnings call with investment fund managers that getting investigated "comes with being a prominent health care service company in America."
Thiry said that while DaVita strives to comply with all rules, "In some cases, playing it totally safe would be the same as unilaterally disarming and exiting the market. And so, this is not to say we predict we're going to go the next 10 years without having to issue a check, that that wouldn't be prudent rather than go through a couple-year battle."
There also are two so-called whistle-blower lawsuits against DaVita — one from a director of a dialysis clinic and the other from an accounts manager for the manufacturer of Epogen — that allege DaVita overused the anemia drug to drive up revenues.
"We believe we can demonstrate DaVita was pushing the envelope and pushing the boundary of what would be good medical practice, and administering Epogen to people who didn't really need it, . . . and they were primarily motivated by profit," said Mike Caddell, a Texas lawyer representing one of the whistle-blowers.
DaVita officials declined to address specifics in the lawsuit but pointed out that whistle-blower lawyers stand to gain large percentages of any potential award.
Imitating a healthy hormone
Most dialysis patients are anemic. The synthetic Epogen corrects anemia by imitating a healthy kidney hormone that boosts red blood cells and, therefore, oxygen in the blood. When their red blood cell count is too low, patients feel wiped out — as someone from sea level would feel suddenly landing on a 14,000-foot peak.
But overcorrecting that by creating too many red cells in effect thickens the blood and can cause fatigue, stroke and heart problems.
Despite clinical trials and an FDA warning about using Epogen to raise the number of red blood cells too high, Medicare continued to financially reward dialysis companies for their Epogen use.
Since 2006, Medicare reimbursed dialysis companies 6 percent more than the companies paid the manufacturer for the drug. Money from the anemia-prevention medicine last year fueled 18 percent of DaVita's revenue, according to its U.S. Securities and Exchange Commission filings.
But that payment system changed in January. Now companies receive a flat rate to care for a patient rather than bill for every treatment or dosage of drugs.
The new payment system severs the link between higher usage of Epogen and larger reimbursement checks from the federal government.
"The new bundling reimbursement policies shift the incentive away from using more drug and toward using less drug," said Michael Yee, an analyst with RBC Capital Markets.
In December — about three weeks before the new Medicare rules took effect — DaVita instituted a new protocol recommending doctors withhold Epogen when the drug boosted patients' blood above 12 grams of hemoglobin per deciliter rather than 14, as was formerly the case.
The FDA has recommended since 2007 that doctors decrease Epogen doses when a patient's hemoglobin level approaches 12 because of clinical trials that showed increased rates of death at levels targeted above 12.
Company officials said they were unable until recently to cut off dosages at level 12 without dropping hemoglobin in some patients to dangerously low levels.
DaVita's Nissenson said the company was attempting to get more of its patients within the 10-12 hemoglobin window "long before there was a whisper of bundling."
Two firms, 60% of market
DaVita is the second-largest dialysis provider behind Fresenius Medical Care North America. The two for-profit companies account for 60 percent of the market.
Denver leaders hailed DaVita's decision in May 2009 to relocate here from El Segundo, Calif. The company says it plans to fill its new headquarters with 1,000 workers.
Thiry bikes with Denver mayoral candidate Chris Romer and sits on a city budget task force. Thiry and Gov. John Hickenlooper appeared together on stage in February for a corporate relocation celebration that had all the fervor of a pep rally, complete with DaVita workers in plumed Three Musketeer hats and plastic swords who responded with boy-girl "Yo, DaVita" shoutouts.
Thiry has donned a Three Musketeer outfit to remind employees of the company motto: "All for one, one for all."
The 55-year-old, who holds a master's degree in business administration from Harvard, is described as a charismatic leader and is widely credited with pulling the company, then known as Total Renal Care, back from the verge of bankruptcy in 1999.
He created a company where he is the mayor of what he calls "DaVita village" and the employees are teammates. The result has been a Wall Street growth machine. Over the past decade, DaVita has amassed 1,612 dialysis centers nationwide. It treats about 125,000 dialysis patients, many of whom have their treatment paid for by the government.
Since 1973, almost anyone who needs dialysis in this country has been able to get it through the federal Medicare program. Americans with kidney failure have guaranteed government insurance regardless of age or income, thanks to an act of Congress that followed harrowing stories of the rationing of care.
The program has grown to a $23 billion annual expense to taxpayers, providing care to about 340,000 patients, many of whom are poor and from disadvantaged communities. Of that expense, about $2 billion has been spent annually on Epogen — the largest Medicare drug expenditure.
Medicare and Medicaid payments make up more than 60 percent of DaVita's revenue, according to the company.
End-stage kidney-disease patients usually stay on dialysis for the rest of their lives or, for a small percentage of patients, until they receive transplants.
Patients with highest levels
DaVita certainly is not the only kidney-care company under scrutiny for its use of Epogen. But DaVita patients historically have had the highest hemoglobin levels — levels controlled by the drug — of any company, according to congressional testimony and the U.S. Renal Data System.
Studies have shown that high hemoglobin levels — particularly those targeted above 12 in pre-dialysis and dialysis patients — can pose an increased risk of heart attack and stroke.
The first drug trial to raise concerns came more than a decade ago. That study, sponsored by Amgen, the manufacturer of Epogen, was halted in 1996 when there were more deaths and heart attacks among patients treated with anemia drugs that pushed hemoglobin levels up to 14.
The study found 30 percent of the patients at the upper range of dosing died, compared with 24 percent of the patients who received Epogen that kept their hemoglobin level at 10.
A clinical trial in 2006 was halted after it found chronic pre-dialysis kidney patients treated with Procrit, an anemia drug similar to Epogen, had more deaths and heart attacks when their hemoglobin levels were raised to 13.5. In a group of 715 patients given the higher dose, 52 died; in a group of 717 given the lower dose, 36 died. Although that study was based on pre-dialysis patients, the FDA warning that followed is for all patients with chronic kidney disease.
That same year, during a congressional hearing to investigate Epogen's use, then-U.S. Rep. Bill Thomas, R-Calif., told Medicare officials: "You seriously need to consider that your payment policy is killing people."
In 2007, the FDA released a "black box" warning — the most serious kind of drug warning — saying hemoglobin levels pushed high by Epogen could lead to heart attacks and stroke. The FDA recommends decreasing the dose of Epogen when a patient's hemoglobin level approaches 12. If that doesn't work, the recommendation is to temporarily stop prescribing Epogen.
Following additional studies that raised further concerns, an FDA-approved 2010 guideline regarding the drug now states patients "may die sooner" when they are "treated with Epogen to a hemoglobin level above 12."
But the FDA's action does not carry the force of law, and DaVita, until December, continued to have a corporate protocol that called for halting doses of the drug only when a patient's hemoglobin level rose above 14. Doses were started again when the patient's level dropped below 13.
DaVita officials said the 2006 studies did not cause "an overnight revolution." And they point out that Medicare policy has permitted Epogen reimbursement payments for patients with hemoglobin levels above 13 as long as the level doesn't stay that high for more than three months.
Government scrutiny of Epogen has been "active, detailed and vigorous," said William Myers, DaVita's vice president of corporate communications. "In turn, our adherence to government guidelines has been strict, meticulous and transparent."
Asked about the high hemoglobin levels of its patients, DaVita countered that it has focused on maintaining a low percentage of patients with hemoglobin levels under 10, and in order to do that, its levels have been at the higher end of the curve. Scientific research has shown allowing a patient's hemoglobin level to slip below 10 is extremely dangerous and even deadly.
Indeed, just 3 percent of DaVita patients in 2003 and 2.8 percent in 2008 had hemoglobin levels below 10, according to the U.S. Renal Data System. But 56.3 percent of DaVita patients had levels 12 and above in 2003 and 38.3 percent had levels 12 and above in 2008.
Other companies had similarly low percentages of patients on the low end of the hemoglobin spectrum and significantly fewer patients on the higher end than DaVita. Fresenius, for example, had 3 percent of patients with hemoglobin levels under 10 in 2008, while 24 percent had levels 12 and above.
Unrelated to payment system
DaVita's leading anemia-management expert, Dr. David Van Wyck, said the Epogen protocol initiated in December is not related to the new bundled-payment system.
Rather, he said, it's a combination of evolving science, the additional Epogen guidelines approved by the FDA in 2010 and new Medicare quality-improvement measures that reward dialysis companies for having more patients' hemoglobin levels within the 10-12 range.
Van Wyck said the latest protocol marked the first time DaVita figured out how to cut off Epogen when patients reach level 12 without causing too many patients to slip below level 10. "It was a huge accomplishment," he said.
Besides, Nissenson said, there was "massive scientific disagreement from 2000 to 2006" about the use of Epogen. And, he said, "within the scientific community still, this is an unresolved debate."
Dennis Cotter, president of the Medical Technology and Practice Patterns Institute, home to some of the country's often-cited kidney-care researchers, said there was no new scientific discovery that would have prompted DaVita's change in protocol in December — just ahead of the new reimbursement policies.
Cotter estimated DaVita's new protocol could cut the company's use of Epogen in half, saving millions of dollars in drug-purchasing costs, now that the government isn't reimbursing the company for each dosage.
DaVita executives discounted Cotter's criticism, saying he is not familiar with the company's internal research, which is used to design protocols.
Another kidney expert said he believes the 2007 FDA warning about the dangers of Epogen at high levels had little effect on the drug's use at for-profit clinics when they should have cut back.
Instead, use remained high in those clinics until the changes in government reimbursement were on the horizon, said Dr. Ajay Singh, an associate professor at Harvard Medical School.
"You could argue that the stimulus for that was the financial stimulus," said Singh, who headed the clinical trial in 2006 that showed anemia drugs might be unsafe for kidney patients at higher doses.
Dr. Melissa Yanover, formerly associated with DaVita and now at a Fresenius clinic, said the medical community, not just for-profit clinics, has pushed for higher hemoglobin at times because many doctors believed research would prove the benefit. Even after studies showed risks at higher hemoglobin levels, doctors have differed in their own target levels and how much to cut back Epogen dosages, Yanover said.
And she said the for-profit system deserves credit for bringing high technology and efficiency to renal care in a way government never could.
Efforts to curb dialysis companies' use of Epogen might not be over.
Medicare is currently reviewing the dosing limits of Epogen and is accepting public comments.
Cotter wants Medicare to adopt stricter per-patient dosage limits in line with FDA guidelines."How can (Medicare) continue to ignore the risks that FDA has already recognized and deemed sufficient to take action?" he asked in a letter last month to Medicare.
The nation's system to pay for dialysis during the past decade was not designed to optimize patient care, the independent Medicare Payment Advisory Commission has reported to Congress. Still, Dr. David Spiegel, a professor and director of the University of Colorado's chronic hemodialysis program, said he does not believe for-profit dialysis companies intentionally harmed anyone for the sake of making money.
"The mission of corporations is really for their bottom line and their stockholder. The mission of a health care company is to do what's in the best interest of the patient," Spiegel said. "When you merge those two worlds, you are potentially asking for and setting up situations of conflicts of interest and maybe misaligned incentives."
Charts and Graphs
Davitas financials
http://www.denverpost.com/portlet/article/html/imageDisplay.jsp?contentItemRelationshipId=3744050Use of Epogen in Dialysis Patients
http://www.denverpost.com/portlet/article/html/imageDisplay.jsp?contentItemRelationshipId=3744063Davita Mortality rate
http://www.denverpost.com/portlet/article/html/imageDisplay.jsp?contentItemRelationshipId=3744069Jennifer Brown: 303-954-1593 or jenbrown@denverpost.com Christopher N. Osher: 303-954-1747 or cosher@denverpost.com
About DaVita
Kent Thiry became chief executive of the struggling Total Renal Care in 1999 and renamed the company DaVita in 2000.
Key numbers:
•35,000 "teammates"
•$6.5 billion in annual revenue
•1,612 dialysis centers in U.S.
•125,000 patients
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