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The Largest EHR / EMR System Installations in the United States

The Most Popular Health Record Systems in the US

Each Electronic Medical Record (EMR) System / Electronic Health Record (EHR) system is unique. Each has their own method of tracking information. In doing a bit of research, we came across a set of articles by Xtelligent Media which lists the largest installations of EMR / EHR systems in the United States by the largest software vendors of these systems.

According to its website: “Xtelligent Media is the leading B2B media company focused on information technology in the healthcare industry. Our series of microsites seeks to educate and provide news and intelligence to CIOs, CMIOs, HIM Directors, CFOs and other IT Professionals and staff within the healthcare industry.” For multiple years, Xtelligent Media has been researching the largest installations of Electronic Medical Record (EMR) and Electronic Health Record (EHR) systems in the United States. Here is a summary of those large installations.

The largest software companies that service this market are:

  • Epic Systems, based in Verona, Wisconsin.
  • Allscripts Healthcare Solutions, Inc., which is based in Chicago, Illinois
  • Medical Information Technology, Inc. headquartered in Westwood Massachusetts
  • Cerner Corporation which is based in Kansas City, Missouri.

All of these companies are publically traded.


The Top Ten Cerner Installations include:

Organization                                                                                      Headquarters

Ascension Health,                                                                            St. Louis, MO

Tenet Healthcare,                                                                            Dallas, TX

Universal Health Services,                                                                King of Prussia, PA

Trinity Health,                                                                                 Livonia, MI

Health South,                                                                                  Birmingham, AL

Dignity Health,                                                                                San Francisco, CA

Adventist Health System,                                                                 Roseville, CA

Carolinas HealthCare System,                                                          Charlotte, NC

Banner Health,                                                                                Phoenix, Az

Memorial Hermann Health System,                                                   Houston, TX

Top Ten Largest Epic EHR / EMR Installations

Organization                                                                                      Headquarters

Kaiser Permanente Health Foundation                                               Pasadena, CA

Providence Health & Services,                                                          Renton, WA

University of Pittsburgh Medical Center,                                            Pittsburgh, PA

Sutter Health,                                                                                 Sacramento, CA

SSM Health,                                                                                   St. Louis, MO

Cleveland Clinic Health System                                                       Cleveland, Ohio

Mercy Health System                                                                     Chesterfield, MO
(FKA: Sisters of Mercy Health System)

Partners Healthcare                                                                       Boston, MA

Mercy Health,                                                                                Cincinnati, OH
( FKA: Catholic Health Partners )

Texas Health Resources                                                                 Arlington, TX

Top Ten All Scripts EHR / EMR Installations

Organization                                                                                      Headquarters

Catholic Health Initiatives                                                              Denver, CO

Northwell Health                                                                           Great Neck, NY

Baylor Health Care System                                                           Dallas, TX

University Hospitals Health System                                                Cleveland, OH

Orlando Health                                                                             Orlando, FL

New York Presbyterian Hospital                                                     New York, NY

Sharp Healthcare                                                                         San Diego, CA

Robert Wood Johnson Health System                                             New Brunswick, NJ

Barnes-Jewish Hospital                                                                 St Louis Missouri

Mountain States Health Alliance                                                     Johnson City, TN

Top Ten MEDITECH EHR / EMR Installations

Organization                                                                                      Headquarters

Hospital Corporation of America                                                    Nashville, TN

Catholic Health Initiatives                                                             Englewood, CO

Catholic Health Initiatives                                                             Irving, TX

Hospital Sisters Health System                                                      Springfield, Illinois

Steward Health System                                                                Boston, MA

Massachusetts Bureau of Public Health Facilities                              Boston, MA

Avera Health                                                                               Brandon, SD

MountainStar Healthcare                                                              Cottonwood Heights, UT

Great Lakes Health System of Western New York                           Buffalo, NY

St. David’s Healthcare                                                                 Austin, TX


It is interesting to note that some of the healthcare providers use multiple systems.

Note: This list is not expected to be updated on a regular basis and the information is subject to change.

More about: Digital Evidence Expert Services

Computer Forensics, Cell Phone Forensics, Black Box Forensics, Electronic Medical Record Forensics, Email Forensics & More

Evidence Solutions, Inc., (ESI) is a premier forensics company founded in 1982.
ESI provides consulting, industry expert witness, and testimony services for digital evidence, law enforcement and security, and truck accident and safety consulting.

Call for a free consultation:           Truck Accident & Safety Division: 888-277-1979          Digital Evidence Division: 866-795-7166

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