The sale of Steward Health Care’s physician network to for-profit insurer Optum is off, state officials confirmed, underscoring the uncertainty swirling around the bankrupt hospital system and the future of its hospitals and providers in Massachusetts.

Optum informed the Health Policy Commission that it is no longer working to finalize an agreement with Steward around the sale of Stewardship Health to Optum Care, but the companies have not yet withdrawn the deal’s material change notice filings with the HPC, the agency said Friday.

The potential sale was first announced in March, but the two large medical providers never submitted information necessary for the HPC to begin a review that would have been required for the sale to go through.

A slew of state and federal lawmakers raised concerns about the potential sale. House Speaker Ronald Mariano said in March that the sale “has the potential to significantly impact the competitiveness of the health care market in Massachusetts, and cause further disruption during a period of acute instability in the health care system.”

Spokespeople for Optum did not immediately respond to a request for comment.

“The DOJ regulatory review process was challenging; Steward and United Optum have decided not to move forward,” Steward said in a Friday afternoon statement. “Stewardship Health remains a valuable asset that provides excellent care for its patients; there are multiple other parties that remain interested in acquiring the business and Steward is in active negotiations.”

The sale of Stewardship Health is a key part of Steward’s bankruptcy restructuring, a process that is still playing out with bids due for Massachusetts hospitals next month. One investment banker working on Steward’s behalf told U.S. Bankruptcy Court that the sale of Stewardship was the company’s “attempt to deleverage and secure liquidity for use in their operations.”

In filings with the bankruptcy court earlier this month, Steward pushed the bid deadline on the sale of its hospitals to July 15, with an auction to commence on July 18 and a sale hearing on July 31.

Steward facilities include Carney Hospital in Dorchester, Good Samaritan Medical Center in Brockton, Holy Family Hospitals in Haverhill and Methuen, Morton Hospital in Taunton, Nashoba Valley Medical Center in Ayer, Saint Anne’s Hospital in Fall River, and St. Elizabeth’s Medical Center in Brighton. Steward’s Norwood Hospital has been closed since 2020 due to flooding, and the company recently closed New England Sinai Hospital permanently.