Visit Hospital Compare to find hospital star ratings and complications for hospitals in all states. Federal government (at medicare.gov) gives 1 to 5 stars and compares hospital ratings for heart attack (AMI), heart failure, pneumonia, COPD, stroke, hip & knee, preventing infections and surgical complications, timeliness of Emergency (ER) dept., use of medical imaging. Most data are from 2018-2019; some ratings are older. Includes death rate comparisons from heart failure, heart attack, pneumonia, COPD, stroke, CABG; and return to hospital (readmission) rates. Click on Timely & Effective Care, or Complications. Shows patient satisfaction HCAHPS ratings (patient experience opinions) from 2018-2019. Some info on colonoscopies and cataracts. Editor’s Pick because the government standardized broad ratings for all hospitals, and most ratings are based on more than just Medicare patients. However, it is still complicated. Small volume hospitals will not show data for some measures. Be sure to click on Show Graphs or View More Details. Today’s stars may reflect older data than shown at the website. Read the fine print. Updated 2020.