His areas of expertise include arrhythmias (irregular heartbeats), implantable cardioverter-defibrillator (ICD) insertion, and pacemaker. He accepts Humana HMO, Humana Bronze, and Humana Catastrophic, in addition to other insurance carriers. Dr. Sarmiento attended medical school at Northwestern University, Feinberg School of Medicine. Dr. Sarmiento is professionally affiliated with OSF Saint Francis Medical Center (Peoria, IL), OSF Saint Elizabeth Medical Center, and OSF Cardiovascular Institute.