Dr. Grainger is a board-certified reproductive endocrinologist who completed his fellowship at Yale University in New Haven, Connecticut.  He is Kansas educated, as well, receiving a Bachelor of Science in Chemistry degree at Wichita State and his medical degree from University of Kansas School of Medicine-Kansas City.  He completed his residency training in OB-GYN at the University of Kansas School of Medicine in Wichita.  Dr. Grainger practiced general obstetrics and gynecology in Hays, Kansas, from 1985 to 1988.

In addition to REI, Dr. Grainger is board-certified in obstetrics and gynecology.  Dr.Grainger obtained a Master's Degree in Public Health from the University of Kansas.  He is active at the national level in our specialty, is a past-president of the Society of Assisted Reproductive Technology (SART), and has been a member of their Executive Council.  He has held the position of Associate Dean of Research at the University of Kansas School of Medicine - Wichita.  Currently, he is a professor in the Department of Obstetrics and Gynecology, the Director of the Division of Reproductive Endocrinology and holds a joint appointment in the Department of Preventative Medicine.