Three new defendants join six others who were previously charged in relation to the ongoing investigation into kickbacks for patient referrals and fraudulent bills for spinal surgeries performed at Pacific Hospital in Long Beach. The scheme involved tens of millions of dollars in illegal kickbacks to dozens of doctors, chiropractors and others.

As a result of the illegal payments, thousands of patients were referred to Pacific Hospital, where they underwent spinal surgeries that led to more than $580 million in fraudulent bills being submitted during the last eight years of the scheme alone. Many of the fraudulent claims were paid by the California worker’s compensation system and the federal government through the Federal Workers’ Compensation System.

Documents in the two unsealed cases which became publicly available last week indicate that Michael R. Drobot, 44, of Newport Beach, the son of Pacific Hospital owner Michael D. Drobot (Drobot Senior), pleaded guilty on March 4 to conspiracy and illegal kickback charges. Drobot Junior is scheduled to be sentenced on November 18.

Chiropractor Michael E. Barri, 48, of San Clemente, who owned and operated the Santa Ana companies Tri-Star Medical Group and Jojaso Management Company, pleaded guilty on March 11 to a conspiracy count and admitted that he received illegal kickbacks for referrals to Pacific Hospital from 2009 through October 2013. During a nine-month period that ended in 2013, Barri admitted receiving $158,555 in illegal kickbacks after referring a dozen patients to Pacific Hospital, where they had back surgeries. As a result of his referrals, Pacific Hospital billed insurance carriers approximately $3.9 million for spinal surgeries. Barri is scheduled to be sentenced on January 13, 2017.

Linda Martin, 66, of Clovis, California, who was a marketer for Pacific Hospital who recruited medical professionals and others to refer patients with promises of kickbacks, pleaded guilty to a conspiracy charge on May 27. She is scheduled to be sentenced on August 19.

These three defendants join six others – including Drobot Senior – who have also pleaded guilty. All nine defendants have agreed to cooperate with the government’s ongoing investigation – dubbed “Operation Spinal Cap” – into the kickback scheme, which involved dozens of surgeons, orthopedic specialists, chiropractors, marketers and other medical professionals.

“The guilty pleas are the latest step in holding accountable the individuals who co-opted doctors and other specialized healthcare workers to carry out multiple kickback conspiracies that abused the state and federal healthcare systems for more than a decade,” said Deirdre Fike, the Assistant Director in Charge of the FBI’s Los Angeles Field Office. “The continuing results of Operation Spinal Cap are based on a tremendous effort by investigators and prosecutors handling this case, which is among the largest healthcare fraud schemes to be perpetrated in the state of California.”

As described in court documents, Drobot Senior – who was the owner and/or CEO of Pacific Hospital of Long Beach until late 2013 and who pleaded guilty in April 2014 – ran a 15-year-long scheme in which he and others submitted hundreds of millions of dollars in bills to workers’ compensation insurers and the U.S. Department of Labor for spinal surgeries and other procedures performed on patients who had been referred by dozens of doctors, chiropractors and others who were paid illegal kickbacks.

When he is sentenced, Drobot Junior will face a statutory maximum penalty of 10 years in federal prison. Barri and Martin each face potential prison sentences of five years as a result of their guilty pleas.