LEWISTON — Community Clinical Services Inc. will close several service sites and lay off 34% of its staff May 1, the organization announced Wednesday in a news release.

The decision came due to the payment instability caused by the state of Maine’s Medicaid budget shortfall and “ongoing federal funding challenges for Federally Qualified Health Center Look Alikes,” the release said.

Community Clinical Services is a Federally Qualified Health Center Look Alike, which provide primary care services on a sliding pay scale in underserved areas. It does not receive federal funding, instead relying on Medicaid payments.

CCS will continue its primary care and mental health services at its 57 Birch St. location in Lewiston and its Behavioral Health Home case management program. Dr. Richard Kappelmann’s internal medicine practice and CCS’s pediatric clinic, both located at St. Mary’s Regional Medical Center at 100 Campus Ave. in Lewiston, will continue operations. St. Mary’s will acquire CCS’s pediatric clinic.

Sites with outpatient counseling, psychiatry, school-based health centers and pediatric dental clinic will close. CCS’s pediatric dental clinic is the only clinic that accepts Maine’s Medicaid program MaineCare for insurance.

The press release did not indicate which physical sites would be closed and a representative from CCS was not immediately available for further details.