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Daniel R. Possehn, D.O.
Dr. Daniel R. Possehn began with Cheyenne Radiology Group in 2005, after finishing a neuroradiology fellowship in California. Although Dr. Possehn can usually be found with a cup of coffee in his hand, don’t try to offer him a mug of instant joe—he’s more of a coffee connoisseur than a caffeine junky. When he’s not at work or traveling to remote destinations, he can be found jamming on the drums or enjoying a walk with his wife and their four-legged child Bear, a golden retriever.
Education
Fellowship
Neuroradiology Fellowship, University of California, Davis
Residency
Diagnostic Radiology, Michigan State University
Internship
Long Beach Medical Center, Long Beach, NY
Medical School
Kirksville College of Osteopathic Medicine, Kirksville, MO (1984)
William D. Ketcham, M.D.
In 2002, Dr. Ketcham moved from Texas to begin offering his medical services at Cheyenne Radiology. In his spare time, you can find Dr. Ketcham piloting small planes through the Wyoming sky or rescuing pit bulls from animal shelters. Recently, he has become more interested in hockey and likes to watch Cheyenne’s minor league team play. He spends most of his time off, however, enjoying the small pleasures of life with his wife and two children.
Education
Internship
Internal Medicine, University of Nevada Affiliated Hospitals
Residency
Radiology, Baylor College of Medicine; Physical Medicine and Rehabilitation, Baylor College of Medicine
Medical School
University of Nevada, Reno, NV (1996)
James G. Hubbard, M.D.
A native of Utah, Dr. Hubbard has been living in Cheyenne and practicing with Cheyenne Radiology for over 20 years. Dr. Hubbard is a daily runner, a volunteer doctor for Cheyenne Frontier Days and a yearly visitor to Alaska for the hunting and fishing. He and his wife are also proud to be the parents of five children and the grandparents of several little ones growing up in homes throughout Wyoming and Utah.
Education
Fellowship
Body Imaging, University of Colorado Health Sciences Center
Internship
LDS Hospital
Residency
University of Colorado Health Sciences Center; LDS Hospital
Undergraduate and Graduate Degrees
B.S., Biology, M.S., Anatomy, University of Utah, Salt Lake City, UT
Medical School
University of Utah, Salt Lake City, UT (1984)
Eric Hoyer, M.D.
Dr. Hoyer grew up in Laramie, did most of his schooling in Colorado and became a part of Cheyenne Radiology in 2007. The son of a University of Wyoming professor, Dr. Hoyer has deep ties to the communities in the state and loves taking advantage of all Wyoming has to offer. Friends know him as a passionate outdoorsman and an excellent angler. At home, Dr. Hoyer enjoys riding horses along with cultivating his classical piano skills and spending time with his wife and four children.
Education
Undergraduate Degree
B.S., Molecular Biology, University of Colorado, Boulder, CO
Residency
Diagnostic Radiology, Fitzsimons Army Hospital
Medical School
University of Colorado, Boulder, CO (1991)
Mark E. Howshar, M.D.
Dr. Howshar’s schooling and professional experience have taken him to California, Tennessee, Missouri and elsewhere, but he’s happy to be back in his home state working with Cheyenne Radiology. A native of Wheatland, Dr. Howshar was accepted to medical school immediately after high school in a combined BA/MD program at the University of Missouri in Kansas City. Thus, following his father into the world of medicine. He started with Cheyenne Radiology when he moved to the city in 2010.
Dr. Howshar was appointed to the Wyoming State Board of Radiologic Technologists in 2015 by the Governor of WY. He also serves on the CRMC Foundation Board and is an associate clinical professor of Medicine at the University of Wyoming.
Education
Fellowship
Osteoradiology/Musculoskeletal Imaging, University of California
Residency
Diagnostic Radiology, Baptist Memorial Hospital
Medical School
University of Missouri, Kansas City, MO (1993)
John W. Wright, M.D.
Dr. Wright has been a radiologist with Cheyenne Radiology since 1990. When he’s not riffing on his guitar, he enjoys sailing over the powder in Steamboat or traveling the world with his family.
Education
Residency
Diagnostic Radiology, Baylor College of Medicine; Neurosurgery, University of Texas at Galveston
Medical School
Baylor College of Medicine, Houston, TX (1984)
D. Wesley Cain, M.D.
Raised in a military family and with a prior career in business and technology, Dr. Cain has lived all over the country and traveled throughout the world, but made Cheyenne his home after completing his medical training because of its small city appeal and his fondness of the outdoors and open spaces. An avid hunter, hockey player and enthusiast, frequent traveler, mechanic hobbyist, aspiring chef, and habitual exerciser, Dr. Cain spends his time in motion when not scrutinizing a complex brain MRI or analyzing medical literature.
Education
Fellowship
Neuroradiology, University of Colorado
Residency
Diagnostic Radiology, University of Colorado
Internship
Internal Medicine, University of Kansas
Medical School
University of Colorado School of Medicine