See What 'Grade' Penn Medicine Princeton Got In New Leapfrog Rating

SOUTH BRUNSWICK, NJ — Penn Medicine Princeton Medical Center is among a slew of medical centers in New Jersey that received the latest rating from a watchdog agency as part of its twice-yearly “safety grades.”

Penn Medicine received an “B” grade for Spring 2025 from The Leapfrog Group, an independent health care nonprofit. In the past, the hospital earned mostly 'A' grades.

The Leapfrog Group uses an academic grading scale with five letter grades to score nearly 3,000 hospitals nationwide on more than 30 measures of patient safety.

Leapfrog says its hospital rating system is the only one in the country focusing solely on a hospital’s ability to protect patients from preventable errors. Learn more about their methodology here.

Other recent grades for Robert Wood Johnson University Hospital, Hamilton include:

• Fall 2024 - A
• Spring 2024 - B
• Fall 2023 - A
• Spring 2023 - A
• Fall 2022 - A
• Spring 2022 - A

For a more detailed report on the hospital, click here.

New Jersey ranked third among all states for the percentage of hospitals receiving “A” grades in the spring 2025 report card.

Read More: 36 NJ Hospitals Earn 'A' Grade In New Safety Ranking

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