In 1957, this Central Florida Clinic began with three physicians and 5,000 square feet. In those 63 years, Gessler has grown to 38 physicians and 6 physician extenders covering 23 specialties. We are accessible to patients in five locations, including our Winter Haven Clinic, with more than 90,000 square feet of patient and office space.Providers‧Careers‧Patients & Visitors‧Areas of Practice‧Contact‧Appointments.