New Search Gerald Winnan M.D. (301) 695-6800 Department Medicine Specialty Gastroenterology Primary Office Address: 310 West Ninth Dr Frederick, MD 21702 Phone: (301) 695-6800 Recommend this Physician Get Directions Education Medical School - University of Illinois College of Medicine Internship - Hahnemann University Hospital Residency - Hahnemann University Hospital Fellowship - Yale University School of Medicine Board Certifications American Board of Internal Medicine American Board of Internal Medicine