- C-Reactive Protein Test
- C-Section
- CA 125 Test
- CAD Screening Test
- Canalth Repositioning
- Cancer Detection
- Capsule Endoscopy
- Cardiac Ablation
- Cardiac Catheterization
- Cardiac Rehabilitation
- Cardioversion
- Carotid Angioplasty
- Carotid Endarterectomy
- Carotid Ultrasound
- CAT And CT Scans
- Cataract Surgery
- Cervical Cap
- Cervical Cerclage
- Cervical Mucus Method
- Cheek Implant
- Chemical Peel
- Chemo For Breast Cancer
- Chemo Infusion and Chemoembolization of Liver
- Chemotherapy
- Chest X-Rays
- Childbirth Class Options
- Childhood Vaccination Schedule
- Chiropractic Adjustment
- Cholecystectomy
- Cholesterol Test
- Choline C-11 Pet Scan
- Chorionic Villus Sampling
- Circumcision (Male)
- Clinical Trials
- Cochlear Implants
- Cognitive Behavioral Therapy (CBT)
- Colectomy
- Colon Cancer Screening and Surveillance
- Colposcopy
- Complementary and Alternative Medicine
- Complete Blood Count
- Computer-Assisted Brain Surgery
- Concussion Testing
- Contraceptive Implant
- Contraceptive Sponge
- Cordocentesis
- Cornea Transplant
- Coronary Angiogram
- Coronary Angioplasty
- Coronary Artery Bypass Graft (CABG)
- Coronary Bypass Surgery
- Corpus Callostomy
- Cortisone Injection
- Cortisone Shots
- Cosmetic Surgery
- Creatinine Test
- Cryoablation For Cancer
- Cryotherapy
- Cryotherapy for Prostate Cancer
- Ct Coronary Angiogram
- CT Scan
- CT Urogram
- Cystectomy
- Cystoscopy
- Cystoscopy and Ureteroscopy
- Cytochrome P450 Test