Dr. Mark Keldahl, MD is a Vascular Surgery Specialist in Chicago, IL. Dr. Keldahl has more experience with Carotid Artery Disease or Carotid Endarterectomy, Peripheral Vascular Procedures, and Aortic Aneurysm or Dissection than other specialists in his area. He is affiliated with Advocate Illinois Masonic Medical Center and is the Medical Director at LeMaitre Vascular, Inc.