Esse Health is a registered trademark of American Multispecialty Group and is located in St. Louis. It is an independent group of more than 75 physicians practicing in nearly 25 different locations throughout the St. Louis metropolitan area. Its doctors work together, meet regularly to monitor and improve patient care. Its services include Purkinje used everyday by its physicians for patient care and increasing office efficiency. Its Excel Imaging is a full-service imaging center with a customer-service focus. It offers services to adult patients, such as blood and other lab tests and also provides routine X-rays. It dispenses common medications, such as antibiotics. It works with insurers as a group to assist patients.