Data Sources

To help consumers evaluate and compare hospital quality, Healthgrades analyzes patient outcome data for virtually every hospital in the country. Healthgrades uses the following data sources for its various ratings and awards.

The following convention is used below: the Healthgrades rating/award year, the data source including data years, and the date the rating/award was released on the Healthgrades website.

Appendectomy

  • 2021: Individual states (CO, FL, IA, IL, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2016 through 2018. Updated 10/20/2020.
  • 2020: Individual states (CO, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2015 through 2017. Updated 10/22/2019.
  • 2019: Individual states (CO, DC, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2014 through 2016. Updated 10/23/2018.

Bariatric Surgery

  • 2021: Individual states (CO, FL, IA, IL, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2016 through 2018. Updated 10/20/2020.
  • 2020: Individual states (CO, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2015 through 2017. Updated 10/22/2019.
  • 2019: Individual states (CO, DC, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2014 through 2016. Updated 10/23/2018.

Labor and Delivery

  • 2020: Individual states (CO, FL, IA, IL, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2016 through 2018. Updated 8/11/2020.
  • 2019: Individual states (CO, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2015 through 2017. Updated 7/30/2019.
  • 2018: Individual states (CO, DC, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2014 through 2016. Updated 7/31/2018.

Obstetrics and Gynecologic Procedures

  • 2020: Individual states (CO, FL, IA, IL, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2016 through 2018. Updated 8/11/2020.
  • 2019: Individual states (CO, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2015 through 2017. Updated 7/30/2019.
  • 2018: Individual states (CO, DC, FL, IA, MD, NJ, NV, NY, OR, PA, RI, TX, VA, WA, WI, WV) for years 2014 through 2016. Updated 7/31/2018.

All Other Procedures/Conditions

  • 2021: Centers for Medicare and Medicaid Services for years 2017 through 2019. Updated 10/20/2020.
  • 2020: Centers for Medicare and Medicaid Services for years 2016 through 2018. Updated 10/22/2019.
  • 2019: Centers for Medicare and Medicaid Services for years 2015 through 2017. Updated 10/23/2018.

America's Best Hospitals for Clinical Excellence

  • 2021: Centers for Medicare and Medicaid Services for years 2017 through 2019. Updated 02/09/2021
  • 2020: Centers for Medicare and Medicaid Services for years 2016 through 2018. Updated 02/11/2020.
  • 2019: Centers for Medicare and Medicaid Services for years 2015 through 2017. Updated 02/12/2019.

Patient Safety

  • 2021: Centers for Medicare and Medicaid Services for years 2017 through 2019. Updated 5/11/2021.
  • 2020: Centers for Medicare and Medicaid Services for years 2016 through 2018. Updated 6/16/2020.
  • 2019: Centers for Medicare and Medicaid Services for years 2015 through 2017. Updated 5/14/2019.

Outstanding Patient Experience

  • 2021: Patient experience surveys from HCAHPS (Hospital Consumer Assessment of Healthcare Providers and Systems) obtained from Centers for Medicare and Medicaid Services for January 1, 2019 through December 31, 2019. Updated 5/11/2021.
  • 2020: Patient experience surveys from HCAHPS (Hospital Consumer Assessment of Healthcare Providers and Systems) obtained from Centers for Medicare and Medicaid Services for April 2018 through March 2019. Updated 6/16/2020.
  • 2019: Patient experience surveys from HCAHPS (Hospital Consumer Assessment of Healthcare Providers and Systems) obtained from Centers for Medicare and Medicaid Services for January 2017 through December 2017. Updated 5/14/2019.

See our methodologies for more information on how Healthgrades rates hospitals and recognizes top-performing hospitals.

When hospitals report jointly: Some hospitals have multiple locations that report under the same Medicare Provider ID. In cases where Healthgrades is able to identify hospitals reporting jointly, Healthgrades uses results for all locations in the analysis, and each of the facilities receives the same rating and is designated as an award recipient if an award is received.

Focus on the most important outcomes: In Fall 2013, Healthgrades removed the 180-day mortality rating. Healthgrades is placing more emphasis on patient outcomes that are most important to consumers (in-hospital mortality), and those that are consistent with national quality improvement efforts (mortality within 30 days of hospital admission).

All-Payer States Citations and Disclaimers

  • Nevada: This information is from the records of the Nevada Division of Health Care Financing and Policy (DHCFP) and was released through the Center of Health Information Analysis (CHIA) of the University of Nevada, Las Vegas. Authorization to release this information does not imply endorsement of this study or its findings by either DHCFP or CHIA.
  • Rhode Island: Rhode Island Hospital Discharge Data, Center for Health Data & Analysis, Rhode Island Department of Health
  • Virginia: Virginia Health Information (VHI) has provided non‐confidential patient level information used in this file, report, publication, or database which it has compiled in accordance with Virginia law but which it has no authority to independently verify. By using this file, report, publication, or database, the user agrees to assume all risks that may be associated with or arise from the use of inaccurate data. VHI cannot and does not represent that the use of VHI’s data was appropriate for this file, report, publication, or database or endorse or support any conclusions of inferences that may be drawn from the use of VHI’s data.
  • Washington: Washington State Data is being made available from: Washington State Department of Health.

Date Last Updated: May 11, 2021