1939
Dr. Maddrey is born in Roanoke Rapids to Milner Crocker and Sara Jean Maddrey.
1960
Dr. Maddrey graduates summa cum laude from Wake Forest University, receiving a Bachelor of Science.
1964
Dr. Maddrey receives a Doctor of Medicine from The Johns Hopkins University School of Medicine, a license to practice medicine in the state of Maryland, and becomes an intern in the Osler Medical Residency Training Program.
1965
Dr. Maddrey becomes an assistant resident in the Osler Medical Residency Training Program.
1968
Dr. Maddrey becomes a senior assistant resident in the Osler Medical Residency Training Program.
1969
Dr. Maddrey is appointed chief resident in the Osler Medical Residency Training Program.
1970
Dr. Maddrey becomes a Fellow in liver disease at the Yale School of Medicine.
1971
Dr. Maddrey is certified as a Diplomate by the American Board of Internal Medicine and becomes an assistant professor of medicine at The Johns Hopkins University School of Medicine.
1975
Dr. Maddrey is promoted to associate professor of medicine and becomes assistant dean of Postdoctoral Programs and Faculty Development at The Johns Hopkins University School of Medicine.
1979
Dr. Maddrey becomes associate director and associate physician-in-chief in the Department of Medicine at The Johns Hopkins University School of Medicine.
1980
Dr. Maddrey is promoted to full professor at the Johns Hopkins University.
1982
Dr. Maddrey receives a license to practice medicine in the state of Pennsylvania and is named a Magee Professor and chairman of the Department of Medicine at Jefferson Medical College (now Sidney Kimmel Medical College) at Thomas Jefferson University in Philadelphia, Pennsylvania.
1990
Dr. Maddrey receives a license to practice medicine in the state of Texas and becomes vice president of clinical affairs and professor of internal medicine at The University of Texas Southwestern Medical Center in Dallas, Texas.
1992
Dr. Maddrey is appointed president of the American College of Physicians.
1993
Dr. Maddrey becomes a Fellow of the Royal College of Physicians in London, England and a Master of the American College of Physicians.
1993
Dr. Maddrey is promoted to executive vice president of clinical affairs at The University of Texas Southwestern Medical Center.
1994
Dr. Maddrey is presented with an honorary Doctor of Science from the Medical College of Ohio (now the College of Medicine and Life Sciences at The University of Toledo).
1998
Dr. Maddrey receives the Distinguished Educator Award from the American Gastroenterological Association.
2000
Dr. Maddrey receives the Distinguished Service Award from the American Association for the Study of Liver Diseases.
2009
Dr. Maddrey is appointed assistant to the president of The University of Texas Southwestern Medical Center.