GSWC’s Providers

Meet the providers dedicated to providing you with quality surgical care.

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Stuart Ackley, MD, FACS

Dr. Ackley graduated from Baylor College of Medicine and completed his Residency in General Surgery at Santa Barbara Cottage Hospital in 1988. He is licensed by the Colorado State Board and certified by the American Board of Surgery. He is a member of the Mesa County Medical Society, Colorado Medical Society, and is a Fellow of the American College of Surgeons. Dr. Ackley has been practicing in Grand Junction since 1992.

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Craig Andersen, MD, FACS 

Dr. Andersen graduated from Harvard University School of Medicine and completed his Residency in General Surgery at the University of Colorado Health Sciences Center in 1996. He is licensed by the Colorado State Board and certified by the American Board of Surgery. He is a member of the Mesa County Medical Society and the Colorado Medical Society. Dr. Andersen has been practicing in Grand Junction since 1996.

Dallin Davies, PA-C

Dallin Davies, PA-C Graduated from Midwestern University Downers Groves College of Health Science with a Masters of medical science in Physician Assistant Studies in 2016. He is board certified with the National Commission on Certification of Physician Assistants. He is also a member of the American Academy of Physician Assistants. He has been working in Grand Junction since his graduation and has been enjoying the area with his wife and three children. He enjoys spending his free time with family and friends.

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Eric J. Hanly, MD

Dr. Hanly attended medical school at Johns Hopkins University, did his general surgery residency at The Johns Hopkins Hospital, and did a fellowship in minimally invasive & bariatric surgery at Duke University. He served for five years in the U.S. Air Force, and has served on the surgical faculty at both the Uniformed Services University and Duke University. He is licensed in Colorado and is a Board Certified fellow by the American college of Surgeons. He serves on the faculty at the University of Colorado Health Sciences Center, and joined the practice in Grand Junction in 2010.

Douglas Hirth, MD

Dr. Hirth graduated from State University of New York (SUNY) Stony Brook School of Medicine and completed his General Surgery Residency at University of Colorado Hospital in Denver, CO. He is licensed by the Colorado State Board, is Board Certified by the American Board of Surgery, and is a member of the Mesa County Medical Society and the Colorado Medical Society. He began practice in Grand Junction in August of 2018.

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Jim Hanosh, MD, FACS

Dr. Hanosh went to medical school at Creighton University. He completed a Residency in General Surgery at Kansas University School of Medicine in Wichita, Kansas in 1991 and a Fellowship in Trauma and Critical Care at the University of New Mexico in 1993. He is licensed by the state of Colorado and he is board certified in General Surgery and Critical Care. He is a member of the Mesa County Medical Society, the Colorado Medical Society and is a Fellow of the American College of Surgeons. Dr. Hanosh has been practicing in Western Colorado since 1997.

Alero Nanna, MD

Dr. Alero Tosanmiweworitse Nanna graduated from Howard University College of Medicine in 2009. There she completed the very competitive accelerated BS/MD program, with the prestigious Presidential scholarship. She proceeded to complete her residency in General Surgery at Mount Sinai Hospital in New York City in 2014. After completing residency, she worked in underserved areas in South Arkansas where she was a general surgery attending for three years. Dr. Nanna is Board Certified by the American Board of Surgery and licensed by the Colorado Medical Board. Dr. Nanna joined us in Grand Junction in January 2018.

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Steven T. O’Day, MD

Dr. O’Day graduated from Creighton University School of Medicine and completed his residency in General Surgery at Exempla St. Joseph Hospital in Denver, Colorado. He is licensed by the State Board and Certified by the American Board of Surgery. He is a member of the American College of Surgeons, The Mesa County Medical Society, and Southwestern Surgical Congress.

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Joel Schaefer, MD, FACS

Dr. Schaefer graduated from the University of New Mexico School of Medicine and completed his Residency in General Surgery at the University of Florida, Jacksonville in 2002. He is licensed by the Colorado State Board and certified by the American Board of Surgery. He is a member of the Mesa County Medical Society and the Colorado Medical Society. He is a Fellow of the American College of Surgeons. He is the Trauma Service Director at St Mary’s Hospital. Dr. Schaefer has been practicing in Grand Junction since 2002.

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Joyce Sekharan, MD, FACS

Dr. Sekharan graduated from the Medical College of Virginia School of Medicine and completed her Residency in General Surgery at the University of Florida – Jacksonville in 2002. Her most recent practice was in Newport News, VA. She is licensed by the Colorado State Board and certified by the American Board of Surgery. She is a member of the Mesa County Medical Society and the Colorado Medical Society. She is a Fellow of the American College of Surgeons. Dr. Sekharan has been practicing in Grand Junction since 2003.

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Teyen Shiao, MD

Dr. Shaio graduated from University of Colorado Health Sciences Center and completed his Residency in General Surgery at Indiana University in 2008. He is licensed by the Colorado State Board and is certified by the American Board of Surgery. Dr. Shiao has been practicing in Grand Junction since 2008.

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Chris Wibbelsman, MD, FACS

Dr. Wibbelsman graduated from the Medical College of Georgia and completed his Residency in General Surgery at Wright State University in 2004. After completing residency he spent four years as a General and Trauma Surgeon in the United States Air Force. Dr Wibbelsman is Board Certified by the American Board of Surgery, a Fellow of the American College of Surgeons and Licensed by the Colorado Medical Board. Dr. Wibbelsman has been practicing in Grand Junction since 2008.

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