NEW BRUNSWICK, NJ — They don’t call it the Healthcare City for no reason.

Saint Peter’s University Hospital earned an A grade in the Leapfrog Group’s spring 2017 hospital safety report, maintaining the top ranking for four straight biannual cycles.

“Saint Peter’s is deeply committed to the safety of our patients, as this grade shows, and we take tremendous pride in that record,” Leslie Hirsch, interim CEO and president of the hospital’s parent company, said in a statement.

Sign Up for E-News

The hospital safety analysis occurs each spring and fall. It examines medical errors, accidents, injuries and infections in more than 2,600 hospitals across the United States. From there, Leapfrog assigns grades ranging from A to F.

Saint Peter’s was one of 823 American hospitals to earn an A and the only to do so in Middlesex County.

Robert Wood Johnson University Hospital, meanwhile, held on to its B rating, an improvement from prior rounds in early 2016 and ’15, according to the report. Its Somerset campus earned an A grade.

The majority of hospitals included in the peer-reviewed survey took home a C.

Leapfrog’s experts reckon that medical centers could save an additional 30,000 lives per year if they all were to rise to A standards.

Saint Peter’s precise total score was 0.484, short of the holy grail of 0.000 but better than the average 0.862.

It did particularly well in clamping down on MRSA, C. diff and blood infections during hospital stays, according to Leapfrog. The hospital earned poorer marks, however, for urinary tract infections in the intensive care unit and surgical site infections after colon surgery.

“All members of our patient care team consistently adhere to best clinical practices in the compassionate care they provide,” Hirsch said. “This fourth consecutive A is truly a credit to them.”

Robert Wood Johnson’s numerical score for its New Brunswick campus fellow below the average, according to Leapfrog.