About Us

Dr. Robert (Rob) Hoyer has practiced medical oncology in Colorado Springs, CO since 2008. Dr. Hoyer is board-certified in internal medicine, medical oncology and hematology. He received his medical degree from Georgetown University School of Medicine. He went on to complete his residency in internal medicine and his fellowship in hematology and oncology at Mayo Graduate School of Medicine.

Dr. Hoyer has a strong interest in lifestyle medicine and the convergence of technology for disease prevention and improved healthspan. He also has an interest in slowing and reversing aging as a primary means of disease prevention.

In his free time, Dr. Hoyer enjoys spending time with his family, skiing and biking.

Dr. Abbass Shafii is a board certified gastroenterologist who has been practicing gastroenterology in Colorado Springs since 1995. During this time he has taken care of over 100,000 patients and has done more than 40,000 successful endoscopies.

Dr. Shafii is passionate about medicine and patient care. He treats each patient as his family should be treated by any physician. He completed his fellowship at Louisiana State University and further postdoctoral training in Asia.

He is interested in preventive medicine and patient education. He sees many patients with different gastrointestinal problems such as Gastroesophageal reflux disease, peptic ulcer disease, malnutrition, malabsorption, irritable bowel syndrome, Inflammatory bowel disease, colon polyp and colon cancer, etc.

Dr. Shafii loves the outdoors and spends many hours hiking, snowshoeing as well as playing pickle ball.