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Dr. Fretwell graduated from the University of South Carolina School of Medicine in 1980. Dr. Fretwell works in Houston, TX and 3 other locations and specializes in Anesthesiology. Dr. Fretwell is affiliated with West Houston Medical Center, Cornerstone Hospital Of Houston, The Woman's Hospital Of Texas, Tomball Regional Medical Center, Texas Orthopedic Hospital, Houston Methodist Willowbrook Hospital, ...