William was born July 19, 1922 to Pauline Sams McLaughlin-Allen and Lewis George Allen Sr, M.D. in Kansas City, Kansas at the old Providence Hospital.

William was born July 19, 1922 to Pauline Sams McLaughlin-Allen and Lewis George Allen Sr, M.D. in Kansas City, Kansas at the old Providence Hospital. William died May 19, 2018. He grew up in Kansas City, Kansas at 1051 Kimball, attending Hawthorn Grade School. The rank of Eagle was achieved as a Boy Scout. He was an accomplished horseman and received a number of awards participating in the American Royal in Kansas City. He attended High School and Junior College at Wentworth Military Academy in Lexington Missouri from 1937 to 1942.  During his last year at Wentworth he served as Corp Commander with rank of Cadet Colonel.  
He entered University of Kansas as a junior in 1942. In June of 1943 he enlisted in the U.S. Army as a Private 1st Class and entered the medical school track. Undergraduate BA degree was completed in 1944 and he graduated from Medical School in 1946 from the University of Kansas Medical School. Internship was completed at Philadelphia General Hospital in Philadelphia, Pennsylvania followed by Radiology Residency at the University of Pennsylvania under Eugene Pendergrass, M.D. In June 1948 he was called to active duty. Basic Medical Officers Training was completed at Fort Sam Huston in Huston, Texas June through August of 1948. In August of 1948 active duty began at Fitzsimmons Army Hospital in Denver, Colorado. He was deployed to Tokyo Japan in May 1949. He separated from the U.S. Army in July 1951 having attained the rank of Major in the Medical Corp.
Dr. Allen started private practice in Diagnostic and Therapeutic Radiology in Kansas City, Kansas as part of his father’s radiology practice in 1951. His partners were Peter Hiebert, MD; Doris Kubin, MD; and Lewis Allen Jr. MD. Private practice in Diagnostic and Therapeutic Radiology continued in Kansas City, Kansas eventually becoming the Radiology Chartered group with outpatient imaging and treatment facilities as well as providing radiology service to Kansas City, Kansas Hospitals - Bethany Medical Center; St. Margaret’s Hospital; and Providence Hospital.  
In 1975 Dr. Allen left Radiology Chartered and joined William Strutz, MD in Leavenworth providing radiology service at St. John’s Hospital and Cushing Memorial Hospital in Leavenworth, Kansas. In 1976 he opened an outpatient imaging center in Kansas City, Kansas at 9201 parallel, ALLEN RADIOLOGY. Son Timothy joined him in practice in 1980 and son William Jr. joined him in practice in 1983 forming the ALLEN/ALLEN/ALLEN RADIOLOGY practice. His diagnostic radiology practice continued in Kansas City, Kansas and Leavenworth until his retirement in 1996, completing 50 years in active medical practice.  
William married Dorothy Lee Miller on December 23, 1944. She preceded him in death in 2009.  They had three boys, Mark L Allen MD of Poland Ohio; Timothy E Allen MD of Topeka Kansas, and William R. Allen Jr MD of Pratt Kansas.  
Dr. Allen had a close lifelong friendship with his brother Lewis G. Allen Jr. MD who preceded him in death.  
He is survived by his three sons and five grandchildren - Gwendolyn Eakes of Salida, Colorado; Sara Desert of Carlsbad, California; Todd Allen of Huntington Beach, California; Amy Miljavac of St. Joseph, Missouri; Austin Allen of Chagrin Falls, Ohio, eight great-grandchildren - Gianna Desert, Isaac Desert, Maria Desert, Dean Desert, Cecilia Desert, Sydney Miljavac, Makenna Miljavac, and Makayla Miljavac,
William and Dorothy lived in Kansas City, Kansas from 1951 until 1981 when they moved to a vintage home in Leavenworth, Kansas. They loved the vintage home and had many tours and social events at their vintage residence. Dr. Allen devoted much of his time to maintaining and enhancing the home after his retirement. He was extremely proud of the home and the historical preservation. He became an accomplished stain glass artisan after retirement, making many stain glass windows for the house.  
He was a devoted husband and it would not be possible to find a pair more in love with each other. As a loving father he was dedicated to supporting his sons and instilled all the good qualities of life by his example.
As a physician he was the consummate radiologist and diagnostician always staying abreast of the latest develops in medicine and radiology. He possessed the ability to connect immediately with his patients, young and old, with true concern and compassion.  
Those who know him appreciated his loyal friendship, outgoing style, and great sense of humor.  He generally had an opinion about everything and was not shy about sharing his point of view.
Friends and family will all miss him deeply. Arrangements entrusted to Davis Funeral Chapel. Condolences may be left on Dr. Allen’s online guestbook at www.davisfuneralchapelinc.com
Memorial service planned for Saturday, May 26, 2018 at 11 a.m. at the Leavenworth First Methodist Church, 422 Chestnut Street Leavenworth, Kansas 66048
In lieu of flowers please send donations to the Leavenworth First Methodist Church.