Caduceus HealthcareCahaba Dermatology & Skin Health Center, LLCCalifornia Correctional Health Care ServicesCalifornia Orthopaedic InstituteCalifornia Pacific OrthopaedicsCalifornia Pacific OrthopaedicsCalifornia Skin InstituteCalifornia Sports and Orthopedics InstituteCambridge Health AllianceCameo Dental SpecialistsCampbell Clinic OrthopaedicsCanning Thoracic Institute/Northwestern MedicineCape Cod HealthcareCape Cod Orthopaedic & Sports MedicineCape Cod Orthopaedics & Sports Medicine PCCape Fear Cardiology AssociatesCape Fear Valley HealthCape Fox Shared ServicesCape Henlopen DermatologyCape Radiology GroupCapital Digestive CareCapital HealthCapital Oral and Facial SurgeryCapitol CardiologyCarbon HealthCardiac SpecialistsCardiology and Fitness Medicine CenterCardiology Associates Medical Group, Inc.Cardiology Associates of Fairfield CountyCardiology Associates of New BrunswickCardiology Associates of PrincetonCardiology Consultants of North MorrisCardiology Consultants of Philadelphia, P.CCardiology Institute of Michigan PLLCCARDIOLOGY PARTNERSCardiology PracticeCardioSolutionCardiovascular Consultants Medical GroupCardiovascular Consultants PCCardiovascular Institute of NW FloridaCardiovascular Institute of the SouthCare Medical GroupCareATCCareATCCareerPhysicianCareMount MedicalCarepoint HealthCarePoint HealthCarilion ClinicCarle HealthCarolina Cape Fear Medical GroupCarolina ENTCarolina Foot & Ankle Associates, PLLCCarolina Nephrology, PACarolina OBGYNCarolina Orthopaedic & Neurosurgical AssociatesCarolina Orthopaedic & Sports Medicine CenterCarolina Orthopedics & Sports Medicine, IncCarolina Specialty Care, PACarolina Urology PartnersCarolinaEast Health SystemCarolinas Center for Oral & Facial SurgeryCarolinas Emergency PhysiciansCarolinas Oral and Facial Surgery CenterCarolyn Jones MD PCCaroMont HealthCarroll HospitalCarson Tahoe HealthCarson Tahoe HealthCary Cardiology, PACasas Adobes Oral & Maxillofacial SurgeryCascade Aids ProjectCascade Eye & Skin CentersCascade Eye and SkinCascade Medical AssociatesCascade Orthopedics and Sports Medicine CenterCascadia HealthCase Recruiters, Inc.Cass Street Ear, Nose, & ThroatCatholic HealthCatholic Health Services of Long IslandCatholic Health SystemCatholic Medical CenterCayuga Addiction Recovery ServicesCayuga Health SystemCCNCCedar DermatologyCedars-Sinai Medical CenterCedars-Sinai Medical NetworkCelebration Obstetrics & Gynecology Associates PACenter for Cosmetic and Clinical DermatologyCenter For Digestive MedicineCenter for New Medicine & Cancer Center for HealingCenter for Oral Surgery & Dental ImplantsCenter for Orthopaedic SpecialistsCenter for Specialty SurgeryCenter For Weight Loss SurgeryCenter For Women's HealthCenters for GastroenterologyCentra HealthCentra Medical GroupCentraCareCentral Arizona Heart SpecialistsCentral California Faculty Medical GroupCentral City ConcernCentral Coast Foot ClinicsCentral Connecticut Cardiologists, LLCCentral Dermatology Center, PACentral Florida Cardiovascular Consultants, PLCentral Florida Oral & Maxillofacial Surgery