The Office of Inspector General of the U.S. Department of Health and Human Services issued a subpoena on March 13 to JSA HealthCare, a subsidiary of the HealthCare Partners division of DaVita HealthCare Partners. DaVita said an attorney with the Civil Division of the United States Department of Justice in Washington, D.C., advised them that the subpoena relates to an ongoing civil investigation concerning Humana’s and its service providers’ risk adjustment practices and data, including identification and verification of patient diagnoses and factors used in making the diagnoses.

The subpoena requests documents and information from Jan. 1, 2008 through Dec. 31, 2013, for all Humana Medicare Advantage Plans for which JSA provided services. It also requests information regarding JSA’s communications with Humana about patient diagnoses as they relate to Humana Medicare Advantage plans and as related to two Florida physicians with whom JSA previously contracted.

"The scope of the inquiry largely predates the acquisition of HCP," a DaVita spokesperson told NN&I. "It relates to an ongoing investigation of Humana and its service providers, which Humana has publicly disclosed. Reports that physicians may have overbilled Medicare are upsetting, and if accurate, are contrary to the core values and practices of our company. We look forward to working with government officials and note that in the years since the acquisitionof HealthCare Partners, significant compliance resources have been dedicated to reinforcing the compliance practices and standards of our organization."

DaVita finalized its acquisition of HealthCare partners in November 2012.