One of Loveland’s hospitals has maintained its A grade in a twice-yearly assessment of patient safety while the other medical center dropped to a C.

The Leapfrog Group, a national patient-safety organization, said on its website Tuesday that Banner Health’s McKee Medical Center received an A, while UCHealth’s Medical Center of the Rockies got a C grade.

Twice a year, Leapfrog gives safety grades to 2,500 acute-care hospitals across the United States using 28 measures to gauge each facility’s “performance in keeping patients safe from preventable harm and medical errors,” according to the website hospitalsafetygrade.org.

• McKee Medical Center in Loveland received an A grade this fall and an A in the spring.

• Medical Center of the Rockies in Loveland received a C grade this fall and a B in the spring.

• UCHealth’s Poudre Valley Hospital in Fort Collins received a B this fall and an A in the spring.

• North Colorado Medical Center in Greeley, which Banner Health operates, received a B this fall and an A in the spring.

Banner Health also owns and operates Banner Fort Collins Medical Center, which opened in April 2015. It didn’t receive a safety grade from Leapfrog.

Sterling Regional MedCenter in Sterling, Banner’s other acute-care hospital in Colorado, received an A.

The UCHealth system didn’t fare so well this time around, with four of its five hospitals receiving C grades: Medical Center of the Rockies, University of Colorado Health in Aurora, Memorial Hospital Central in Colorado Springs and Yampa Valley Medical Center in Steamboat Springs.

Two Colorado hospitals, neither of them affiliated with Banner or UCHealth, received D’s: Parkview Medical Center in Pueblo and Community Hospital in Grand Junction.

“Patient safety and providing excellent patient care is something we strive for every day with every patient encounter,” Margo Karsten, CEO of Banner’s Front Range hospitals, said in a press release Tuesday.

Consumers can click through on the Leapfrog Group’s website to read general ratings for each hospital on a number of the measures that the organization uses to rate the facilities, such as infections after surgery, surgical wounds splitting open, patient falls and communication among staff members.