Dr. Clarke's areas of expertise include the following: refractive surgery (vision correction surgery) and cataracts. He is professionally affiliated with ThedaCare. He takes Humana HMO, Humana Bronze, and Humana Catastrophic, as well as other insurance carriers. Before performing his residency at St. Louis Children's Hospital and a hospital affiliated with Medical College of Wisconsin, Dr. Clarke attended Loyola University Chicago, Stritch School of Medicine. He is conversant in Spanish.