Dr. Lawrence Marczak recieved his bachelor's degree in Biological Science at the University of Illinois.  He is a graduate of the Illinois College of Podiatric Medicine and completed his residency working at Thorek Hospital and Medical Center.  He is board certified in Podiatric Medicine and surgery by the American Board of Podiatric Surgery.  Dr. Marczak began his practice in 1979 and two years later opened his second satellite office on the Northside.  He is affiliated with several hospitals including St. Joseph's, The Resurrection Facilities and Illinois Masonic.  He is Chief of Podiatry at Lincoln Park Hospital.

He also currently serves as one of the directors at the Veterans Administration Hospital and at the Rehabilitation Institute of Chicago.  Also, he has been published in several medical journals and lectured on many occasions.  Along with the medical and surgical care of the foot and ankle, Dr. Marczak's other areas of expertise include, geriatrics, rehabilitative sports medicine and laser surgery.