Apollo Hospitals Enterprise Ltd operates a network of private hospitals in India through primary, secondary, and tertiary care facilities. The firm's tertiary care hospitals provide advanced care in a variety of specialties that include cardiology, oncology, neuroscience, orthopedics, radiology, and gastroenterology. Apollo Hospitals also operates primary care and diagnostics clinics as well as telemedicine units and offers consulting, health insurance, education and training, and research services. The firm receives the largest proportion of revenue from its core healthcare business. The firm's standalone pharmacy segment contributes the second largest proportion of revenue.