Our Providers
William J. Salyers, Jr., MD, MPH, FACP
Professor and Chair, Department of Internal Medicine
Division Chief – Gastroenterology
University of Kansas School of Medicine – Wichita
Nathan Tofteland, MD
Associate Professor, Departments of Internal Medicine and Pediatrics
Program Director – Gastroenterology Fellowship
Division Director – Internal Medicine/Pediatrics
Division – Gastroenterology
University of Kansas School of Medicine – Wichita
Kyle Rowe, MD
Assistant Professor, Department of Internal Medicine
Associate Program Director – Gastroenterology Fellowship
Division – Gastroenterology
University of Kansas School of Medicine-Wichita
Sarah Rooker, DNP, APRN
Sarah Rooker, DNP, APRN is a board-certified nurse practitioner by the American Association of Nurse Practitioners.
To reach Sarah Rooker after hours please call 316-262-6262 to page her.
Andrew Osbeck, PA-C, MPA
Andrew Osbeck, PA-C is a board certified Physician Assistant. He earned his Master of Physician Assistant degree from Wichita State University in 2006. He has 10 years of clinical Gastroenterology experience and joined Dr. Salyers at KU-Wichita Gastroenterology in February of 2013.
To reach Andrew Osbeck after hours please call 316-262-6262 to page him.
Cynthia Jantzen, APRN
Cynthia Jantzen, APRN-C is a board certified Nurse Practitioner. She earned her Bachelor of Science in Nursing from Bethel College and her Masters in Nursing from Wichita State University. She joined Dr. Tofteland at KU-Wichita Gastroenterology in April of 2016.
To reach Cindy Jantzen after hours please call 316-262-6262 to page her.
Daly Al-Hadeethi, MD (Fellow)
Daly Al-Hadeethi, MD is a Gastroenterology fellow. She earned her medical degree from Al-Nahrain University College of Medicine in Baghdad, Iraq and graduated residency in Internal Medicine at the University of Kansas School of Medicine-Wichita.
To reach Dr. Al-Hadeethi after hours please call 316-262-6262 to page her.
Stephanie Melquist, MD (Fellow)
Stephanie Melquist, MD is a Gastroenterology fellow. She earned her medical degree from Trinity School of Medicine in the Caribbean and graduated residency in Internal Medicine at the University of North Dakota School of Medicine and Health Sciences.
To reach Dr. Melquist after hours please call 316-262-6262 to page her.
Rahul Shekhar, MD (Fellow)
Rahul Shekhar, MD is a Gastroenterology fellow. He earned his medical degree from Government Medical College Nagpur in India and graduated residency in Internal Medicine at the University of Missouri-Columbia.
To reach Dr. Shekhar after hours please call 316-262-6262 to page him.
Kevin Singh, MD (Fellow)
Kevin Singh, MD is a Gastroenterology fellow. He earned his medical degree from St. George’s University School of Medicine in Grenada, West Indies and graduated in Internal Medicine at Woodhull Medical and Mental Health Center in New York.
To reach Dr. Singh after hours please call 316-262-6262 to page him.
Kevin Kadado, DO (Fellow)
Kevin Kadado, DO is a Gastroenterology fellow. He earned his medical degree from University of North Texas Health Science Center Texas College of Osteopathic Medicine and graduated residency in Internal Medicine at the University of Kansas School of Medicine-Wichita.
To reach Dr. Kadado after hours please call 316-262-6262 to page him.
Wael Mohamed, MD (Fellow)
Wael Mohamed, MD is a Gastroenterology fellow. He earned his medical degree from University of Cairo Faculty of Medicine in Egypt and graduated residency in Internal Medicine at the University of Missouri-Kansas City School of Medicine.
To reach Dr. Mohamed after hours please call 316-262-6262 to page him.
Sandra Chehayeb, MD (Research Fellow)
Sandra Chehayeb, MD is a Research fellow. She earned her medical degree from the University of Balamand Faculty of Medicine and Medical Sciences.
Mohamed Omar, MD (Research Fellow)
Mohamed Omar, MD is a Research fellow. He earned his medical degree from the University of Nairobi School of Medicine.