New York authorities are investigating more than 100 social adult day care providers over suspected Medicaid fraud or other possible illegal activity, Gov. Kathy Hochul announced Tuesday. Federal investigators are also involved.

The inquiry follows months of work involving the state Health Department, the FBI and agencies that investigate Medicaid fraud. Hochul directed health officials to require managed long-term care plans to check day care claims before paying them and seek payment suspensions when warranted.

Social adult day care offers daytime supervision, meals, activities and personal care to people in New York’s Medicaid Managed Long Term Care program. More than 400 programs serve about 45,000 members statewide, at an estimated annual cost exceeding $500 million.

Hochul also ordered a review of the benefit, including whether to strengthen oversight or phase it out and move participants to other services. No decision to end it has been announced. Recommendations are due by Dec. 31, with officials prioritizing continued care for older adults.