| Washington University School of Medicine | Washington University School of Medicine |
| Washington University | Washington University |
| Mercy Hospital Saint Louis | Mercy Hospital Saint Louis |
| Barnes-Jewish Hospital | Barnes-Jewish Hospital |
| Missouri Baptist Medical Center | Missouri Baptist Medical Center |
| Saint Louis University | Saint Louis University |
| Siteman Cancer Center - South County | Siteman Cancer Center - South County |
| St. Louis Children's Hospital | St. Louis Children's Hospital |
| Siteman Cancer Center at Barnes-Jewish Hospital - Saint Louis | Siteman Cancer Center at Barnes-Jewish Hospital - Saint Louis |
| Mercy Hospital South | Mercy Hospital South |
| Washington University School of Medicine Siteman Cancer Center | Washington University School of Medicine Siteman Cancer Center |
| Cardinal Glennon Children's Medical Center | Cardinal Glennon Children's Medical Center |
| Saint Louis University Hospital | Saint Louis University Hospital |
| Siteman Cancer Center at Christian Hospital | Siteman Cancer Center at Christian Hospital |
| St. Louis University Health Sciences Center | St. Louis University Health Sciences Center |
| Missouri Baptist Cancer Center | Missouri Baptist Cancer Center |
| Sundance Clinical Research, LLC | Sundance Clinical Research, LLC |
| David C. Pratt Cancer Center at St. John's Mercy | David C. Pratt Cancer Center at St. John's Mercy |
| St. Louis Center For Clinical Research | St. Louis Center For Clinical Research |
| Saint Louis University Cancer Center | Saint Louis University Cancer Center |
| Washington University Medical Center | Washington University Medical Center |
| St. Louis Univ. School of Medicine AVEG | St. Louis Univ. School of Medicine AVEG |
| Cardinal Glennon Children's Hospital | Cardinal Glennon Children's Hospital |
| Washington University/St. Louis Children's Hospital | Washington University/St. Louis Children's Hospital |
| Center for Cancer Care and Research | Center for Cancer Care and Research |
| Mallinckrodt Institute of Radiology | Mallinckrodt Institute of Radiology |
| Saint Louis University - Center for Vaccine Development | Saint Louis University - Center for Vaccine Development |
| The Retina Institute | The Retina Institute |
| St Louis Heart and Vascular | St Louis Heart and Vascular |
| Mercy Health Research | Mercy Health Research |
| Ophthalmology Associates | Ophthalmology Associates |
| Clayton Sleep Institute | Clayton Sleep Institute |
| Veteran's Affairs Medical Center - Saint Louis | Veteran's Affairs Medical Center - Saint Louis |
| Central Dermatology PC | Central Dermatology PC |
| St. Louis ConnectCare, Infectious Diseases Clinic | St. Louis ConnectCare, Infectious Diseases Clinic |
| PsychCare Consultants Research | PsychCare Consultants Research |
| Southampton Healthcare, Inc. | Southampton Healthcare, Inc. |
| Barnes-Jewish West County Hospital | Barnes-Jewish West County Hospital |
| St Louis Regional Hosp / St Louis Regional Med Ctr | St Louis Regional Hosp / St Louis Regional Med Ctr |
| Washington University School of Medicine Division of Oncology | Washington University School of Medicine Division of Oncology |
| St. Mary's Health Center | St. Mary's Health Center |
| Arthritis Consultants | Arthritis Consultants |
| Saint Louis University Dermatology | Saint Louis University Dermatology |
| St. Louis VA Medical Center John Cochran Division, St. Louis, MO | St. Louis VA Medical Center John Cochran Division, St. Louis, MO |
| Arch Clinical Trials, LLC | Arch Clinical Trials, LLC |
| Tekwani Vision Center | Tekwani Vision Center |
| Ophthalmology Consultants, Ltd. | Ophthalmology Consultants, Ltd. |
| Washington University School of Medicine in St. Louis - Center for Clinical Studies | Washington University School of Medicine in St. Louis - Center for Clinical Studies |
| Washington University Barnard Cancer Center | Washington University Barnard Cancer Center |
| Center for Advanced Medicine | Center for Advanced Medicine |
| Washington University Infusion Center Pharmacy | Washington University Infusion Center Pharmacy |
| St. Anthony's Cancer Center | St. Anthony's Cancer Center |
| Washington University School of Medicine Center for Advanced Medicine | Washington University School of Medicine Center for Advanced Medicine |
| Body Aesthetic Plastic Surgery | Body Aesthetic Plastic Surgery |
| Washington University Orthopedics | Washington University Orthopedics |
| Shriners Hospital for Children | Shriners Hospital for Children |
| Central West Clinical Research | Central West Clinical Research |
| Christian Hospital | Christian Hospital |
| Washington University School of Medicine; Department of Neurology | Washington University School of Medicine; Department of Neurology |
| Washington University School of Medicine Infectious Disease Clinical Research Unit | Washington University School of Medicine Infectious Disease Clinical Research Unit |
| Synexus Clinical Research US, Inc | Synexus Clinical Research US, Inc |
| Center for Outpatient Health | Center for Outpatient Health |
| St. Louis University Ophthalmology | St. Louis University Ophthalmology |
| Saint Louis University, Gastroenterology & Hepatology | Saint Louis University, Gastroenterology & Hepatology |
| Planned Parenthood of the St. Louis Region and Southwest Missouri | Planned Parenthood of the St. Louis Region and Southwest Missouri |
| Washington University School of Medicine Program in Physical Therapy | Washington University School of Medicine Program in Physical Therapy |
| Ocular Therapeutix, Inc | Ocular Therapeutix, Inc |
| Washington University School of Medicine-Dermatology | Washington University School of Medicine-Dermatology |
| The MS Center for Innovations in Care | The MS Center for Innovations in Care |
| Siteman Cancer Center - Washington University Medical Campus | Siteman Cancer Center - Washington University Medical Campus |
| St. Louis Medical Center | St. Louis Medical Center |
| Washington University Center for Applied Research Sciences | Washington University Center for Applied Research Sciences |
| Saint Louis University - Doisy Research Center | Saint Louis University - Doisy Research Center |
| Mercy Clinic St. Louis Cancer and Breast Institute | Mercy Clinic St. Louis Cancer and Breast Institute |
| Washington University School of Medicine, Movement Disorders Center | Washington University School of Medicine, Movement Disorders Center |
| Department of Pediatrics, Washington University School of Medicine; and St. Louis Children's Hospital | Department of Pediatrics, Washington University School of Medicine; and St. Louis Children's Hospital |
| Washington University School of Medicine Healthy Mind Lab | Washington University School of Medicine Healthy Mind Lab |
| U of MO St. Louis College of Optometry | U of MO St. Louis College of Optometry |
| Washington University School of Medicine, Division of Endocrinology, Metabolism and Lipid Research | Washington University School of Medicine, Division of Endocrinology, Metabolism and Lipid Research |
| Christian Hospital Northeast Cancer Care Center | Christian Hospital Northeast Cancer Care Center |
| St Louis Kidney Care | St Louis Kidney Care |
| Affinia Healthcare | Affinia Healthcare |
| Saint Louis University Center for Advanced Dental Education | Saint Louis University Center for Advanced Dental Education |
| West County Rheumatology | West County Rheumatology |
| Saint Louis University Department of Neurology | Saint Louis University Department of Neurology |
| Washington University - Jewish | Washington University - Jewish |
| Normandy Schools Collaborative | Normandy Schools Collaborative |
| Parkcrest Plastic Surgery | Parkcrest Plastic Surgery |
| St. Louis Children's Hospital: Pediatric Transplantation | St. Louis Children's Hospital: Pediatric Transplantation |
| Center for Outpatient Health, Washington University in St. Louis | Center for Outpatient Health, Washington University in St. Louis |
| Heartland CCOP/Missouri Baptist Medical Center | Heartland CCOP/Missouri Baptist Medical Center |
| Movement Disorders Center | Movement Disorders Center |
| Associated Specialists in Medicine, PC | Associated Specialists in Medicine, PC |
| Washington University School of Medicine-Center for Clinical Imaging Research | Washington University School of Medicine-Center for Clinical Imaging Research |
| Schlesinger St. Louis | Schlesinger St. Louis |
| Washington University -- Sleep Medicine Center | Washington University -- Sleep Medicine Center |
| Barnes-Jewish Hospital Department of Pharmacy | Barnes-Jewish Hospital Department of Pharmacy |
| Project ARK | Project ARK |
| Chromalloy American Kidney Center | Chromalloy American Kidney Center |
| Baer Pediatrics | Baer Pediatrics |
| Barnes-Jewish Hospital - Gastroenterology | Barnes-Jewish Hospital - Gastroenterology |
| Consultants In Women's Healthcare, Inc. | Consultants In Women's Healthcare, Inc. |
| Washington University (109) | Washington University (109) |
| Department of Neurology and Psichiatry, Saint Louis University | Department of Neurology and Psichiatry, Saint Louis University |
| Mercy Clinic Heart and Vascular | Mercy Clinic Heart and Vascular |
| Physicians Group, LC DBA Rheumatology & Internal Medicine Associates | Physicians Group, LC DBA Rheumatology & Internal Medicine Associates |
| Specialists in Gastroenterology | Specialists in Gastroenterology |
| Mercy Clinic, Minimally Invasive Gynecology | Mercy Clinic, Minimally Invasive Gynecology |
| IMA Clinical Research - St. Louis | IMA Clinical Research - St. Louis |
| Barnes Jewish Hospital Plaza | Barnes Jewish Hospital Plaza |
| Mercy Research St. Louis | Mercy Research St. Louis |
| University of Missouri-St Louis | University of Missouri-St Louis |
| Pacific Research Network | Pacific Research Network |
| Early Emotional Development Program | Early Emotional Development Program |
| Mid-America Transplant Services | Mid-America Transplant Services |
| The John Bouhasin Center for Children with Bleeding Disorders | The John Bouhasin Center for Children with Bleeding Disorders |
| SSM Cardinal Glennon Fetal Care Institute | SSM Cardinal Glennon Fetal Care Institute |
| Barnes-Jewish Dialysis Center | Barnes-Jewish Dialysis Center |
| St. Louis Children's Hospital Eye Center | St. Louis Children's Hospital Eye Center |
| Washington University and Barnes Jewish Heart & Vascular Center | Washington University and Barnes Jewish Heart & Vascular Center |
| Saint Louis Rheumatology | Saint Louis Rheumatology |