| California Correctional Health Care Services |
California, United States |
| Cambridge Health Alliance |
Massachusetts, United States |
| Camp Emerson |
Massachusetts, United States |
| Cape Cod Healthcare |
Massachusetts, United States |
| Capital Health |
Pennsylvania, United States |
| Carbon Health |
, |
| Care Team Solutions |
New York, United States |
| CareOnSite |
California, United States |
| CarleHealth |
Illinois, United States |
| Carolina Sports Medicine and Orthopaedic Specialists, PA |
North Carolina, United States |
| Casa de Salud |
New Mexico, United States |
| Cascade AIDS Project |
Oregon, United States |
| Catherine Screnci MD PLLC |
New York, United States |
| Center for Hospice Care |
Indiana, Canary Islands |
| Centra Medical Group |
Virginia, United States |
| Central City Concern |
Oregon, United States |
| Central Texas Surgical Associates |
Texas, United States |
| Central Vermont Medical Center |
Vermont, United States |
| Centurion |
Virginia, United States |
| Certified Allergy & Asthma Consultants |
New York, United States |
| Charles B. Wang Community Health Center |
New York, United States |
| Cherokee Regional Medical Center |
Iowa, United States |
| Children's Hospital Los Angeles |
California, United States |
| Children's Specialty Group |
Virginia, United States |
| Children't Specialty Group |
Virginia, United States |
| CHOC Specialists |
California, United States |
| Christiana Care Health System |
, United States |
| CHRISTUS St. Vincent |
New Mexico, United States |
| Circadia Health |
California, United States |
| Cleveland Clinic |
Ohio, United States |
| Cleveland Clinic |
Ohio, |
| Clinic for Special Children |
Pennsylvania, United States |
| Clinica Colorado |
Colorado, United States |
| Clinical Bridges PLLC |
Texas, United States |
| CND Life Sciences |
Arizona, United States |
| Collaborating Docs |
Virginia, United States |
| Colorado State University, Health Network |
Colorado, United States |
| Columbia Memorial Hospital |
Oregon, United States |
| Commonwealth Psychology Associates |
Massachusetts, United States |
| Community Behavioral Health Center |
Ohio, United States |
| Community Brands |
Connecticut, United States |
| Community Health Connections, Inc. |
Massachusetts, United States |
| Community Health Connections, Inc. |
Massachusetts, United States |
| Community Memorial Health System |
California, |
| CompHealth |
Utah, United States |
| Con Edison |
New York, United States |
| Concord Orthopaedics |
New Hampshire, United States |
| Confluence Health |
Washington, United States |
| Confluence Health |
Washington, United States |
| Connecticut Oncology Group |
Connecticut, United States |
| Consano Health |
Texas, United States |
| Cook Inlet Tribal Council |
Alaska, United States |
| COPE Community Services, Inc. |
Arizona, United States |
| Corizon Health |
Tennessee, United States |
| Cornell Scott-Hill Health Center |
Connecticut, United States |
| Correct Care Solutions |
Colorado, United States |
| Correctional Medicine Associates |
Tennessee, United States |
| CoumbiaCare Services |
Oregon, United States |
| Covenant HealthCare College of Medicine at Central Michigan University |
Michigan, United States |
| CRAssociates Inc. |
Virginia, United States |
| Cross Country Search |
Missouri, United States |
| Crozer Health Medical Group |
Pennsylvania, United States |
| Curative |
Texas, United States |
| Curology |
California, United States |
