Ambulatory care means medical services offered on an outpatient basis without admission in hospital for treatment. However some outpatient services are excluded from ambulatory care. Ambulatory care is delivered by physicians like specialists in family medicine, internal medicine, obstetrics, gynecology, cardiology, gastroenterology, endocrinology, ophthalmology, and dermatology. Physician offices are the most common site of ambulatory care. Medical investigations like blood tests, X-rays, endoscopy and biopsy procedures of superficial organs can be performed on an ambulatory basis. Ambulatory care can be given either in a medical institution based settings like clinics, ambulatory surgery centers and emergency medical services or in a non-medical institution based settings like school and prison health centres, vision, dental and pharmaceutical care.