| Mayo Clinic | Rochester, MN | 32 |
| Iowa Physicians Clinic Medical Foundation | West Des Moines, IA | 29 |
| West Virginia University Medical Corporation | Morgantown, WV | 21 |
| Cardiovascular Institute of the South APMC | Houma, LA | 20 |
| Prairie Cardiovascular Consultants, Inc. | Springfield, IL | 20 |
| Cleveland Clinic Foundation | Cleveland, OH | 17 |
| Medical University of South Carolina and Affiliates | Charleston, SC | 16 |
| University Hospitals Medical Group, Inc. | Cleveland, OH | 15 |
| Columbia University | New York, NY | 15 |
| Pikeville Medical Center, Inc. | Pikeville, KY | 14 |
| UT Le Bonheur Pediatric Specialists, Inc | Memphis, TN | 13 |
| The University of Kansas Physicians | Kansas City, KS | 13 |
| IU Health Care Associates | Indianapolis, IN | 13 |
| Brigham and Women's Physicians Organization, Inc | Somerville, MA | 13 |
| Children's Hospital Corporation | Boston, MA | 13 |
| Hartford HealthCare Medical Group, Inc. | Wethersfield, CT | 13 |
| University of Louisville Physicians, Inc. | Louisville, KY | 12 |
| OSF Multi-Specialty Group | Peoria, IL | 12 |
| Carle Health Care, Incorporated | Champaign, IL | 11 |
| The Children's Mercy Hospital | Kansas City, MO | 11 |
| Jack Stephens Heart Institute LLC | Little Rock, AR | 11 |
| Vidant Medical Group, LLC | Greenville, NC | 11 |
| University of Louisville | Louisville, KY | 11 |
| Wellmont Cardiology Services | Johnson City, TN | 10 |
| Icahn School of Medicine at Mount Sinai | New York, NY | 10 |
| The University Of Kansas Medical Center | Kansas City, KS | 10 |
| Allegheny Clinic | Pittsburgh, PA | 10 |
| Monument Health Rapid City Hospital, Inc. | Rapid City, SD | 9 |
| Self Regional Healthcare | Greenwood, SC | 9 |
| Montefiore Medical Center | Bronx, NY | 9 |
| Marshfield Clinic | Marshfield, WI | 9 |
| Centra Medical Group, LLC | Lynchburg, VA | 9 |
| West Tennessee Healthcare | Jackson, TN | 9 |
| University Of Kentucky | Lexington, KY | 9 |
| PeaceHealth | Vancouver, WA | 9 |
| Las Cruces Physician Practices, LLC | Las Cruces, NM | 9 |
| University of Alabama Health Services Foundation, PC | Birmingham, AL | 9 |
| Children's National Medical Center | Washington, DC | 9 |
| Mount Sinai Medical Center of Florida | Miami Beach, FL | 9 |
| HH Heart Center, LLC | Huntsville, AL | 9 |
| United Health Services Hospitals, Inc. | Binghamton, NY | 8 |
| OU Health Partners, Inc. | Oklahoma City, OK | 8 |
| The Metrohealth System | Cleveland, OH | 8 |
| Eastern Maine Medical Center | Bangor, ME | 8 |
| University of Utah | Salt Lake City, UT | 8 |
| Commonwealth Health Corporation | Bowling Green, KY | 8 |
| University of Rochester | Rochester, NY | 8 |
| St. Bernards Physician Clinics, Inc. | Jonesboro, AR | 8 |
| Northwestern Memorial HealthCare | Chicago, IL | 8 |
| Boston Children's Heart Foundation | Boston, MA | 8 |
| Mercy Clinic East Communities | Chesterfield, MO | 7 |
| The Christ Hospital Physicians LLC | Cincinnati, OH | 7 |
| University of Pittsburgh Physicians | Pittsburgh, PA | 7 |
| Ochsner Clinic Foundation | New Orleans, LA | 7 |
| Citrus Cardiology Consultants, PLLC | Inverness, FL | 7 |
| Catholic Health Initiatives-Iowa Corp. | Des Moines, IA | 7 |
| Carolinas Physicians Network, Inc. d/b/a Atrium Health Medical Group | Charlotte, NC | 7 |
| Baptist Health Medical Group, Inc. | Louisville, KY | 7 |
| Willis Knighton Medical Center, Inc. | Shreveport, LA | 7 |
| UMass Memorial Medical Group, Inc. | Worcester, MA | 7 |
| IHC Health Services, Inc. | Murray, UT | 7 |
| Billings Clinic | Billings, MT | 7 |
| Yuma Regional Medical Center, an Arizona Non-Profit Corporation | Yuma, AZ | 7 |
| The Mary Imogene Bassett Hospital | Cooperstown, NY | 6 |
| Innovis Health, LLC | Fargo, ND | 6 |
| Decatur Memorial Hospital | Decatur, IL | 6 |
| Baxter County Regional Hospital, Inc. | Mountain Home, AR | 6 |
| UPMC Medical Education | Pittsburgh, PA | 6 |
| Heartland Cardiology LLC | Wichita, KS | 6 |
| Piedmont Heart Institute Physicians, Inc. | Atlanta, GA | 6 |
| North Platte, Nebraska Hospital Corporation | North Platte, NE | 6 |
| Wentworth-Douglass Physician Corporation | Dover, NH | 6 |
| Saints Medical Group, LLC | Oklahoma City, OK | 6 |
| King's Daughters Medical Specialties, Inc. | Ashland, KY | 6 |
| University of Texas Medical Branch | Galveston, TX | 6 |
| Ascension Medical Group Via Christi, P.A. | Wichita, KS | 6 |
| Cincinnati Children's Hospital Medical Center | Cincinnati, OH | 6 |
| US Army Defense Language Institute Foreign Language Center | Monterey, CA | 6 |
| Specialty Physician Group, LLC | Memphis, TN | 6 |
| Atlanticare Regional Medical Center | Atlantic City, NJ | 6 |
| Heart Institute of East Texas, PA | Lufkin, TX | 6 |
| Cardiology Associates of Jonesboro, Inc. | Jonesboro, AR | 6 |
| Dedicated Senior Medical Centers of Florida, LLC | Miami, FL | 5 |
| MedStar Medical Group II, LLC | Columbia, MD | 5 |
| CHVI Professional Corporation | Tacoma, WA | 5 |
| Kumar Ravi MD FACC PC, dba Arizona Heart Specialists | Sun City, AZ | 5 |
| Deaconess Specialty Physicians, Inc. | Evansville, IN | 5 |
| Chen Neighborhood Medical Centers of South Florida, LLC | Miami Gardens, FL | 5 |
| University of Colorado | Boulder, CO | 5 |
| Massachusetts General Physicians Organization | Somerville, MA | 5 |
| Cardiovascular Care, PA | Wichita, KS | 5 |
| Saint Mary's Medical Group, Inc. | Reno, NV | 5 |
| TidalHealth Specialty Care, LLC | Salisbury, MD | 5 |
| Centennial Medical Group, Inc. | Roseburg, OR | 5 |
| Christiana Care Health Services, Inc. | Wilmington, DE | 5 |
| Iowa City VA Health Care System | Iowa City, IA | 5 |
| Sanford Clinic | Sioux Falls, SD | 5 |
| UPMC Western Maryland Health Services LLC | Pittsburgh, PA | 5 |
| NYU Grossman School of Medicine | New York, NY | 5 |
| Mercy Hospital, Cedar Rapids, Iowa | Cedar Rapids, IA | 5 |
| Genesis Medical Group, LLC | Zanesville, OH | 5 |
| Cardiovascular Medicine PLLC | Davenport, IA | 5 |
| University of Minnesota | Minneapolis, MN | 5 |
| Trustees Of The University Of Pennsylvania | Philadelphia, PA | 5 |
| Concord Hospital | Concord, NH | 5 |
| Carson Tahoe Physicians Clinics | Carson City, NV | 5 |
| UPMC Altoona Regional Health Services, Inc. | Pittsburgh, PA | 5 |
| Prime Cardiology Group PLLC | Las Vegas, NV | 5 |
| Cookeville Regional Medical Center | Cookeville, TN | 5 |
| Mosaic Health System | St. Joseph, MO | 5 |
| Arkansas Cardiology, P.A. | Little Rock, AR | 5 |
| Hays Medical Center, Inc. | Hays, KS | 5 |
| The Children's Hospital of Philadelphia | Philadelphia, PA | 5 |
| The Permanente Medical Group, Inc. | Pleasanton, CA | 4 |
| Advanced Cardiology, LLC | Cedar Knolls, NJ | 4 |
| Cleveland Clinic Florida | Weston, FL | 4 |
| Catholic Health Initiatives Colorado | Centennial, CO | 4 |
| Dartmouth-Hitchcock Clinic | Lebanon, NH | 4 |
| The Iowa Clinic, P.C. | West Des Moines, IA | 4 |
| Beth Israel Deaconess Medical Center, Inc. | Boston, MA | 4 |
| Georgia Heart Institute, LLC | Gainesville, GA | 4 |
| St. Joseph's Hospital Health Center | Syracuse, NY | 4 |
| LHP Pocatello, LLC | Pocatello, ID | 4 |
| Sentara Medical Group | Virginia Beach, VA | 4 |
| Mercy Clinic Springfield Communities | Springfield, MO | 4 |
| Kapi'olani Medical Specialists | Honolulu, HI | 4 |
| Fairview Heights Medical Group, SC | St. Louis, MO | 4 |
| Lehigh Valley Hospital Inc. | Allentown, PA | 4 |
| Weill Cornell Medical College | New York, NY | 4 |
| Southern Oregon Cardiology LLC | Medford, OR | 4 |
| University of Arkansas for Medical Sciences | Little Rock, AR | 4 |
| United Memorial Medical Center | Rochester, NY | 4 |
| Jefferson Hospital Association, Inc. | Pine Bluff, AR | 4 |
| DLP Conemaugh Physician Practices, LLC | Johnstown, PA | 4 |
| CHRISTUS Trinity Clinic | Irving, TX | 4 |
| The Nemours Foundation - Nemours Children's Health | Jacksonville, FL | 4 |
| AHS Oklahoma Heart, LLC d/b/a Oklahoma Heart Institute | Tulsa, OK | 4 |
| Banner Medical Group | Phoenix, AZ | 4 |
| Trinity Health of New England Provider Network Organization, Inc. | Hartford, CT | 4 |
| VCU Health System Authority | Richmond, VA | 4 |
| MedStar Medical Group II, LLC | Columbia, MD | 4 |
| Guthrie Medical Group, P.C. | Sayre, PA | 4 |
| Altru Health System | Grand Forks, ND | 4 |
| Excela Health Physician Practices, Inc. | Greensburg, PA | 4 |
| Cardiology Associates Of Jonesboro, Inc | Jonesboro, | 4 |
| Pima Heart Physicians | Tucson, AZ | 4 |
| Children's Physician Services of South Texas | Corpus Christi, TX | 3 |
| HealthTexas Provider Network | Dallas, TX | 3 |
| White River Health System, Inc. | Batesville, AR | 3 |
| Interventional Cardiologists of Gainesville | Gainesville, FL | 3 |
| University of Maryland Community Medical Group | Easton, MD | 3 |
| Minneapolis VA Health Care System | Minneapolis, MN | 3 |
| MaineHealth | Portland, ME | 3 |
| Cardiology Clinics of San Antonio, PLLC | San Antonio, TX | 3 |
| Great River Health System, Inc. | West Burlington, IA | 3 |
| Stormont-Vail HealthCare | Topeka, KS | 3 |
| Spectrum Health Primary Care Partners | Grand Rapids, MI | 3 |
| Lakeside Heart and Vascular Center, PLLC | Lake Havasu City, AZ | 3 |
| PMR Virginia Holding, LLC | Miami, FL | 3 |
| Westchester Medical Center Advanced Physician Services, PC | Hawthorne, NY | 3 |
| Queen'S University Medical Group | Honolulu, HI | 3 |
| Atlanta Heart Associates, P.C. | Stockbridge, GA | 3 |
| North Mississippi Medical Center, Inc. | Tupelo, MS | 3 |
| Dignity Health | Phoenix, AZ | 3 |
| Harrison Memorial Hospital | Cynthiana, KY | 3 |
| Knoxville HMA Cardiology PPM, LLC | Jefferson City, TN | 3 |
| Appalachian Regional Healthcare, Inc. | Hazard, KY | 3 |
| Lifespan Physician Group Inc. | Providence, RI | 3 |
| Conway Hospital, Inc. | Conway, SC | 3 |
| Einstein Practice Plan, Inc. | Philadelphia, PA | 3 |
| Prisma Health Medical Group - Midlands | Greenville, SC | 3 |
| The Moses H. Cone Memorial Hospital Operating Corporation, Inc. | Greensboro, NC | 3 |
| Norton Healthcare Inc. | Louisville, KY | 3 |
| District Medical Group, Inc | Phoenix, AZ | 3 |
| Southwest Louisiana Hospital Association | Lake Charles, LA | 3 |
| Oregon Health & Science University | Portland, OR | 3 |
| Intermountain Medical Group Grand Junction, LLC | Grand Junction, CO | 3 |
| Memorial Hospital at Gulfport | Gulfport, MS | 3 |
| Lester E. Cox Medical Centers | Springfield, MO | 3 |
| Charleston Area Medical Center, Inc. | Charleston, WV | 3 |
| Baptist Health Deaconess Medical Group, Inc. | Madisonville, KY | 3 |
| Franciscan Missionaries of Our Lady Health System, Inc. | Baton Rouge, LA | 3 |
| Cardiovascular Institute of New England | Lincoln, RI | 3 |
| Wake Forest University Baptist Medical Center | Winston Salem, NC | 3 |
| Saint Francis Health System | Tulsa, OK | 3 |
| Southeastern Cardiology Associates, P.C. | Columbus, GA | 3 |
| Heart One Associates | Phoenix, AZ | 3 |
| The University of Alabama at Birmingham | Birmingham, AL | 3 |
| Baystate Medical Practices, Inc. | Springfield, MA | 3 |
| Geisinger Clinic | Danville, PA | 3 |
| Orlando Health Medical Group, Inc. | Orlando, FL | 3 |
| The Methodist Hospitals, Inc. | Gary, IN | 3 |
| Affinity Cardiovascular Specialists, LLC | Gadsden, AL | 3 |
| Kadlec Regional Medical Center | Renton, WA | 3 |
| Salem Health | Salem, OR | 3 |
| Florida Hospital Healthcare Partners, Inc. | Ormond Beach, FL | 3 |
| University of Washington | Seattle, WA | 3 |
| Northeast Arkansas Clinic Charitable Foundation, Inc. | Jonesboro, AR | 3 |
| Bayhealth Medical Center, Inc. | Dover, DE | 3 |
| University of South Florida | Tampa, FL | 3 |
| Citizens Memorial Hospital District | Bolivar, MO | 3 |
| Diagnostic and Clinical Cardiology, PA | West Orange, NJ | 3 |
| Jehdhun LLC | Elizabeth, NJ | 3 |
| Faith Regional Physician Services, LLC | Norfolk, NE | 3 |
| Stern Cardiovascular Foundation, Inc. | Germantown, TN | 3 |
| Duke University Health System | Durham, NC | 3 |
| Monongalia County General Hospital Company | Morgantown, WV | 3 |
| Owensboro Health Medical Group, Inc. | Owensboro, KY | 3 |
| Banner University Medical Group | Phoenix, AZ | 3 |
| Cayuga Medical Associates, P.C. | Ithaca, NY | 3 |
| North Central Heart Institute | Sioux Falls, SD | 3 |
| Poplar Bluff HMA Physician Management, LLC | Poplar Bluff, MO | 3 |
| Cardiac and Vascular Consultants MD PA | The Villages, FL | 3 |
| Mercy Medical Services, Inc. | Sioux City, IA | 3 |
| St. Luke's Physician Group, Inc. | Bethlehem, PA | 3 |
| Scott & White Clinic | Temple, TX | 3 |
| Kettering Independent Medical Group, Inc. | Kettering, OH | 3 |
| The Duluth Clinic, Ltd. | Duluth, MN | 3 |
| University Health Physicians | Kansas City, MO | 3 |
| Hamilton Medical Center Inc. | Dalton, GA | 3 |
| Trinity West | Steubenville, OH | 3 |
| Heart And Vascular Associates Of Northern Jersey, P.A. | Fair Lawn, NJ | 3 |
| Western Kentucky Heart & Lung Associates Psc | Bowling Green, KY | 3 |
| Indiana University Health Ball Memorial Physicians, Inc. | Muncie, IN | 3 |
| Bullhead City Clinic Corporation | Bullhead City, AZ | 2 |
| Cedars Heart Clinic, PLLC | Chandler, AZ | 2 |
| Complete Cardiology Care LLC | Ormond Beach, FL | 2 |
| University Of Florida | Gainesville, FL | 2 |
| Indiana University | Indianapolis, IN | 2 |
| UNMC Physicians | Omaha, NE | 2 |
| Florida Hospital Medical Group, Inc. | Maitland, FL | 2 |
| Good Samaritan Hospital | Vincennes, IN | 2 |
| Aultman Deuble Heart & Vascular Hospital, LLC | Canton, OH | 2 |
| Nuvance Health Medical Practice, P.C. | Lagrangeville, NY | 2 |
| Southern Mississippi Heart Center, P. A. | Ocean Springs, MS | 2 |
| Central Maine Medical Center | Lewiston, ME | 2 |
| Las Cruces Physician Services, LLC | Las Cruces, NM | 2 |
| Guam Healthcare Development, Inc. | Dededo, | 2 |
| Faculty Physicians & Surgeons of LLUSM | Loma Linda, CA | 2 |
| Regional Health Services, Inc. | Pittsburgh, PA | 2 |
| Grand Strand Surgical Specialists, LLC | Myrtle Beach, SC | 2 |
| Presbyterian Healthcare Services | Albuquerque, NM | 2 |
| CTH Physicians Clinic | Carson City, NV | 2 |
| Bexar County Hospital District | San Antonio, TX | 2 |
| Harvard Medical Faculty Physicians At Beth Israel Deaconess Medical Center | Woburn, MA | 2 |
| University of Minnesota Physicians | Minneapolis, MN | 2 |
| Oklahoma Heart Hospital | Oklahoma City,, OK | 2 |
| Inova Health Care Services | Fairfax, VA | 2 |
| Saint Elizabeth Medical Center | Edgewood, KY | 2 |
| St. Luke's Health System, Ltd. | Boise, ID | 2 |
| Holyoke Medical Center, Inc | Holyoke, MA | 2 |
| Aultman Hospital | Canton, OH | 2 |
| Beebe Physician Network, Inc. | Lewes, DE | 2 |
| Martinsville Physician Practices, LLC | Martinsville, VA | 2 |
| Integris Health, Inc. | Oklahoma City, OK | 2 |
| Dignity Community Care | San Francisco, CA | 2 |
| Beacon Medical Group | South Bend, IN | 2 |
| MountainStar Cardiology St. Marks, LLC | Salt Lake City, UT | 2 |
| Gundersen Lutheran Administrative Services, Inc. | La Crosse, WI | 2 |
| Louisiana Children's Medical Center | New Orleans, LA | 2 |
| Brainerd Medical Center, Inc. | Brainerd, MN | 2 |
| Pioneer Cardiovascular Consultants, PC | Tempe, AZ | 2 |
| Union Associated Physicians Clinic, LLC | Terre Haute, IN | 2 |
| Pioneer Valley Cardiology, PC | Springfield, MA | 2 |
| Advocate Health and Hospitals Corporation | Oak Brook, IL | 2 |
| SCL Health Medical Group - Billings, LLC | Billings, MT | 2 |
| The Leland Stanford, Jr University | Stanford, CA | 2 |
| Halo Medical Group PLLC | Dearborn, MI | 2 |
| St. Luke'S-Roosevelt Hospital Center | New York, NY | 2 |
| Wesley Physician Services, LLC | Hattiesburg, MS | 2 |
| Benefis Health System Inc | Great Falls, MT | 2 |
| Advantage Health/Saint Mary's Medical Group | Grand Rapids, MI | 2 |
| Stuart Cardiology Group LLC | Rockville, MD | 2 |
| Medical Foundation, Inc. | Meridian, MS | 2 |
| St. Vincent Medical Group, Inc. | Indianapolis, IN | 2 |
| Sierra Vista Regional Health Center Medical Group, LLC | Sierra Vista, AZ | 2 |
| Olympia Health Inc. | Olympia, WA | 2 |
| Sanford Bismarck | Bismarck, ND | 2 |
| Cardiology Associates Of Altoona, L.L.P. | Altoona, PA | 2 |
| Berkshire Medical Center | Pittsfield, MA | 2 |
| University Primary Care Practices Inc. | Cleveland, OH | 2 |
| VA Northeast Ohio Health Care System | Cleveland, OH | 2 |
| Adventist Health System/Sunbelt, Inc. | Sebring, FL | 2 |
| Cheyenne Regional Physicians Group LLC | Cheyenne, WY | 2 |
| University Physicians & Surgeons, Inc. | Huntington, WV | 2 |
| Mercy Health Physicians Youngstown Specialty Care LLC | North Lima, OH | 2 |
| Arkansas Heart Hospital | Little Rock, AR | 2 |
| Cardiovascular Associates Inc. | Kissimmee, FL | 2 |
| ProMedica Northwest Ohio Cardiology Consultants | Toledo, OH | 2 |
| Rutgers, The State University of New Jersey | Newark, NJ | 2 |
| Phoebe Physician Group, Inc. | Albany, GA | 2 |
| Wake Forest University Health Sciences | Winston-Salem, NC | 2 |
| Plon Spaccavento & Associates, LTD d/b/a Advanced Heart Care Associates | Las Vegas, NV | 2 |
| Mercy Health Physicians Cincinnati Specialty Care, LLC | Cincinnati, OH | 2 |
| Hennepin Healthcare System, Inc. | Minneapolis, MN | 2 |
| Erlanger Health | Chattanooga, TN | 2 |
| Lakeland Hospitals at Niles and St. Joseph, Inc. | Grand Rapids, MI | 2 |
| Dedicated Physicians Group of Tennessee, PLLC | Miami Gardens, FL | 2 |
| Physicians Clinic, Inc. | Omaha, NE | 2 |
| St. Mary's Physician Services, LLC | Russellville, AR | 2 |