In a recent development concerning a sophisticated health care fraud scheme that targeted insurance companies for over $1 million, a federal indictment has been announced against one Massachusetts resident, while three others-two from Massachusetts and one from New York-are set to plead guilty to conspiracy charges related to the fraud. The accused, Henry Ezeonyido of Brockton, 36, is charged with one count of conspiracy to commit health care fraud and six counts of health care fraud, whereas his accomplices, Brendon Ashe, 40, of Dorchester; Darline Cobbler, 40, of Randolph; and Ariel Lambert, 34, of Brooklyn, have all agreed to guilty pleas according to documents unveiled by the Justice Department on its website.