Dr. Killen has been my primary care physician for over 40 years. I stayed with him when he moved to MDVIP because of his caring and conservative approach to medical care. If I come in with a problem he listens carefully to completely understand the issue then prudently applies his extensive knowledge about me to determine the least invasive approach of addressing the problem without subjecting me to extensive tests. If he determines more investigation is needed he will bring in a specialist as appropriate, talking directly with the specialist to ensure a complete understanding of the issue prior to my visit. Having direct access to him via his cell phone is very comforting. I rarely use this service but, if needed, he is always available.