Roger T. Crenshaw, M.D., is a graduate of the University of California, Irvine, Medical School, and  a Fellow of the Masters and Johnson Institute of St. Louis.  He is a past chairperson of the Western Region of the  American Association of Sex Educators, Counselors and Therapists, and has numerous publications in the field of Human Sexuality.  He is a Life Fellow of the American Academy of Family Practice, American Psychiatric Association, and a Life Member of the American Association of Sex Educators, Counselors and Therapists.