| ALUA | University of Alabama at Birmingham Hospital | Birmingham | Alabama |
| ARCH | Arkansas Children’s Hospital | Little Rock | Arkansas |
| CACH | Rady Children’s Hospital, San Diego | San Diego | California |
| CALL | Loma Linda University Medical Center & Children’s Hospital | Loma Linda | California |
| CASFp | University of California San Francisco | San Francisco | California |
| CASU | Stanford University Medical Center – Lucille Packard Children’s Hospital | Stanford | California |
| CRS | Cardiac Registry Support | St Cloud | Minnesota |
| DCCH | Children’s National Medical Center | Washington | District of Columbia |
| DEAI | Nemours/A.I. duPont Hospital for Children | Wilmington | Delaware |
| FLUF | Shands at the University of Florida | Gainesville | Florida |
| GAEH | Children’s Healthcare of Atlanta | Atlanta | Georgia |
| IAIV | University of Iowa Hospitals and Clinics | Iowa City | Iowa |
| ILCM | Ann & Robert H. Lurie Children’s Hospital of Chicago | Chicago | Illinois |
| KYNO | Norton Children’s Hospital | Louisville | Kentucky |
| LAOF | Ochsner Medical Center | New Orleans | Louisiana |
| MDJH | The Johns Hopkins Hospital | Baltimore | Maryland |
| MIUM | University of Michigan Health Systems | Ann Arbor | Michigan |
| MNSM | Mayo Clinic Rochester MN | Rochester | Minnesota |
| MNUM | University of Minnesota Medical Center-Fairview | Minneapolis | Minnesota |
| MOBH | Barnes-Jewish Hospital | St. Louis | Missouri |
| MOCH | St. Louis Children’s Hospital | St. Louis | Missouri |
| MOCM | Children’s Mercy Hospital | Kansas City | Missouri |
| NCCM | Carolinas Medical Center | Charlotte | North Carolina |
| NCDU | Duke University Medical Center | Durham | North Carolina |
| NCNCp | UNC Hospitals | Chapel Hill | North Carolina |
| NYCPp | Columbia Presbyterian – Children’s Hospital of New York | New York | New York |
| NYMA | Montefiore Medical Center | Bronx | New York |
| NYMS | Mount Sinai Medical | New York | New York |
| OHCC | Cleveland Clinic | Cleveland | Ohio |
| OHCM | Cincinnati Children’s Hospital Medical Center | Cincinnati | Ohio |
| PACP | The Children’s Hospital of Philadelphia | Philadelphia | Pennsylvania |
| PAPT | University of Pittsburgh Medical Center | Pittsbugh | Pennsylvania |
| SCMU | Medical University of South Carolina Medical Center | Charleston | South Carolina |
| TNVUp | Vanderbilt Children’s University Hospital | Nashville | Tennessee |
| TXCM | Children’s Medical Center | Dallas | Texas |
| TXTC | Texas Children’s Hospital | Houston | Texas |
| VAUV | University of Virginia Health System | Charlottesville | Virginia |
| XCAALAH | University of Alberta Hospital | Edmonton, Alberta | Alberta |