At Signature Medicine, we’re here to help you accomplish your health goals. Dr. Sitapara is a recognized concierge doctor in the greater Philadelphia area who runs his practice with a compassionate and patient-focused outlook. He makes his patients a priority, providing them with around-the-clock care at their convenience. Patients of Signature Medicine are provided with a tailored treatment strategy that is designed specifically based on their health needs and goals. Our membership medicine practice specializes in three main specialties - concierge primary care, medical weight loss, and medical spa services. Families from Langhorne, PA, all the way to Richboro, PA, depend on Dr.