Timothy J. Crimmins received his BS and MD from The George Washington University. He completed residency in internal medicine at The University of Washington in Seattle and board certification in internal medicine in 2001. He completed training in Vascular Medicine at Columbia University through the informal pathway and completed board certification in Vascular Medicine in 2008.

Dr. Crimmins serves as Medical Director of the Non-Invasive Vascular Medicine Lab where ultrasound is used for the diagnosis of vascular disorders. Clinical interests include vascular medicine, non-invasive vascular diagnosis, general internal medicine and medical education. He has a master's certificate in Leadership Development having completed the Master Teacher in Medical Education Program at The George Washington University.

His clinical goals of care include patient education, patient-centered care and use of systems to enable high-quality patient care. His education goals include enabling independent thinking and the use of metacongnition to foster an understanding of the underlying thought processes involved in medical decision-making.