Physicians

The June E. Nylen Cancer Center has a caring and capable medical staff, dedicated to providing personal care to their patients. Below are the biographies outlining their extensive educations, past experiences, as well as memberships in a variety of cancer-related organizations.

Siouxland Hematology Oncology Associates

The physicians of Siouxland Hematology-Oncology Associates have been providing expert medical oncology care and chemotherapy to the Iowa, Nebraska and South Dakota region since 1980. Located at the June E. Nylen Cancer Center, Siouxland Hematology-Oncology Associates also brings state-of-the-art cancer treatment to 14 satellite clinics located throughout the region. Locations include: Cherokee, Hawarden, Ida Grove, Onawa, LeMars, Orange City, Pocahontas, Primghar, Sac City, Sioux Center, Spirit Lake, and Storm Lake, Iowa as well as Pender and Wayne, Nebraska.

Donald B. Wender, Ph.D., MD
Dr. Wender received his medical degree from Ohio State University and a Ph.D. in biochemistry from Case Western Reserve University. He completed his internship, residency and fellowship at the University of Pittsburgh Health Center. He is a member of the American College of Physicians, the Iowa Oncology Society and the American Society of Clinical Oncology. He is board-certified in medical oncology by the American Board of Internal Medicine and currently serves as principal investigator in the North Central Cancer Treatment Group, a national clinical research group sponsored by the National Cancer Institute.
Radha M. Rao, MD
Dr. Rao earned her medical degree from the Kurnool Medical School and completed her internship at Kurnool General Hospital, both in Kurnool, India. She completed a residency at the State University of New York and a fellowship at Case Western Reserve University. Dr. Rao is a member of the North Central Cancer Treatment Group, the American Society of Clinical Oncology and the Iowa Oncology Society. She is board-certified in medical oncology by the American Board of Internal Medicine.
Stephen P. Kahanic, MD
Dr. Kahanic received his medical degree from Case Western Reserve University and completed his residency and fellowship at the University of Iowa. He is a member of the Iowa Oncology Society and the American Society of Clinical Oncology. He is currently involved in Hospice of Siouxland and the Woodbury County Medical Society. Dr. Kahanic was an associate faculty member in Oncology and Hematology at the University of Iowa School of Medicine. He is board-certified in medical oncology by the American Board of Internal Medicine.
Sudarshan R. Doddabele, MD
Dr. Doddabele received his medical degree from Karnatak Medical College in India in 1990. He completed his Internal Medicine Residency training and Medical Oncology Fellowship training at East Tennessee State University in Johnson City, Tennessee. He obtained his Hematology Fellowship training from Baylor College of Medicine in Houston, Texas. Dr. Doddabele is Board Certified in both Medical Oncology and Hematology. He is a member of the American Medical Association and American College of Physicians.

bala_physicians_pageKamalesh K. Bala, MD, Ph.D

Dr. Bala received his medical degree from the Madras Medical College in Chennai, India, and a Ph.D in Microbiology and Immunology from the University of Maryland. He completed his residency in Internal Medicine at St. Luke’s – Roosevelt Hospital in New York, and his Hematology-Oncology fellowship at the Montefiore Medical Center, Albert Einstein College of Medicine in Bronx, New York. He is board certified in Hematology and Medical Oncology. He joined Siouxland Hematology-Oncology Associates in October 2012.
Shariblack.genelliShari Black, CNP
Ms. Black received her nursing degree from Gustavus Adolpus College in St. Peter, Minn., and her master’s degree from The College of St. Catherine in St. Paul, Minn. She has extensive experience as a certified nurse practitioner working with cancer patients at the Cleveland Clinic and Mayo Clinic. She is a member of the Local and National Oncology Nursing Society and Sigma Theta Tau.

Roth Department of Radiation Oncology

Greg Naden, MD
Dr. Naden is a native of Cedar Rapids, a graduate of the University of South Dakota and the University of Iowa Medical School, and is board-certified in Radiation Therapy. After serving his internship in Michigan and residency in California, Dr. Naden practiced in Madison, Wisconsin from 1988-2005.


murphy_physicians_pageCharles Murphy, MD

Dr. Murphy is from Clermont, Iowa, and received his undergraduate degree from the University of Northern Iowa and his medical degree from the University of Iowa Carver College of Medicine. He completed his Internal Medicine Internship and Radiation Oncology Residency at the University of Iowa, where he served as Chief Resident. He is a member of the American Society of Therapeutic Radiation Oncology, the Iowa Society of Therapeutic Radiation Oncology, American Brachytherapy Society, and the Woodbury Medical Society. He is Board Certified in Radiation Oncology by the American Board of Radiology.

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June E. Nylen Cancer Center
230 Nebraska St.
Sioux City, IA 51101
712-252-0088
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About Us

June E. Nylen Cancer Center is a non-profit organization, locally owned by UnityPoint Health - St. Luke's and Mercy Medical Center - Sioux City.