Since arriving in Boston from rural North Carolina in early May, the new president of financially struggling Carney Hospital in Dorchester — owned by for-profit Steward Health Care System — has had a consistent message for staffers, patients, and community residents.

“What I tell them is we’re going to be a great community hospital,” said Andy Davis, 41. “The Carney is open for business. There’s been substantial investment from Steward, and there will be future investments, not only in capital improvements, but in people.”