His areas of expertise include the following: spinal decompression, spinal cancer, and spine reconstruction. Patient reviews placed Dr. Kalfas at an average of 4.5 stars out of 5. He takes Coventry, Coventry Bronze, and Coventry Silver, in addition to other insurance carriers. Before performing his residency at Allegheny General Hospital and Cleveland Clinic, Dr. Kalfas attended Northeast Ohio Medical University for medical school. He is professionally affiliated with Cleveland Clinic Main Campus.