A statement on behalf of Melissa Rivers says she'll work to ensure the safety of future patients.
The federal Department of Health and Human Services has given Yorkville Endoscopy until Jan. 7 to correct deficiencies to avoid losing Medicare accreditation.
A state report released Monday said the clinic "failed to identify deteriorating vital signs and provide timely intervention."
Rivers, who was 81, died Sept. 4 of brain damage due to lack of oxygen. She'd stopped breathing during an endoscopy days earlier.
The clinic said it has submitted a plan to state and federal accreditation agencies addressing all issues raised. It said the physicians involved no longer provide services there.
PHOTOS: Joan Rivers through the years