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Radiation oncologists

Radiation oncology, also called therapeutic radiology, is the subspecialty of oncology that involves treatment of cancer with radiation. Learn more about therapeutic radiology >>

Radiation oncology is provided at Community Hospital East, Community Hospital South (off-site) and Community Regional Cancer Center - North on the Community Hospital North campus. Find locations >>

Jianan C. Graybill, M.D.Jianan C. Graybill, M.D.

Dr. Graybill is board certified in radiation oncology by the American Board of Radiology. She received her medical degree from Pritzker School of Medicine at the University of Chicago in Illinois. She was trained in radiation oncology at Rush Presbyterian St. Luke’s Hospital in Chicago.

Dr. Graybill has a special interest in treating prostate and breast cancer. She started the prostate seed program in Anderson, Indiana. She also has expertise in treating prostate cancer with high dose rate (HDR) brachytherapy. Dr. Graybill was also one of the first physicians to bring MammoSite brachytherapy, partial breast irradiation, to Indiana.

In 2013, 2012, 2011 and 2005, Dr. Graybill was selected as a “Top Doc” by Indianapolis Monthly. She is a fellow in the American College of Radiation Oncology and the past president of Radiation Oncology Society of Indiana. She is also a member of the American Society for Radiation Oncology.

Chandrika Patel, M.D.Chandrika Patel, M.D.

Dr. Patel is board certified in radiation oncology by the American Board of Radiology. She received her medical degree from Washington University School of Medicine in St. Louis, Missouri, where she graduated in the top third of her class. She completed a residency in radiation oncology at the Cleveland Clinic Foundation in Ohio.

While working towards her undergraduate degree, Dr. Patel received numerous scholastic honors. Since receiving her medical degree, Dr. Patel has written and presented numerous medical research studies. Dr. Patel is a member of the American Society for Radiation Oncology.

Darrel Ross, M.D.Darrel Ross, M.D.

Dr. Ross is board certified in radiation oncology by the American Board of Radiology. He attended Wayne State University School of Medicine in Detroit, Michigan and completed his radiation oncology residency at Henry Ford Hospital and Medical Center. He also did specialty training rotations at M.D. Anderson Cancer Center in Houston, Texas, as well as St. Jude Children’s Research Hospital in Memphis, Tennessee. He is a member of the American Society for Radiation Oncology.

In his free time, Dr. Ross enjoys cycling, tennis, kickboxing and playing the piano.

Daniel Weed, M.D.Daniel Weed, M.D.

Dr. Weed is board certified in radiation oncology by the American Board of Radiology. He received his medical degree from Indiana University School of Medicine. Dr. Weed trained in radiation oncology at William Beaumont Hospital in Royal Oak, Michigan.

Dr. Weed has broad expertise in common and uncommon malignancies. He is the past co-chair of the Hoosier Oncology Head and Neck research subdivision. He has several publications in whole breast, partial breast, prostate and intra-operative radiation therapy. Dr. Weed has enrolled patients with varying malignancies into several trial groups including Children’s Oncology Group, Gynecologic Oncology Group, NSABP-B, NSABP-C, and RTOG trials. He has years of experience with radiosurgery, stereotactic body radiotherapy, brachytherapy, rapid arc and image guidance techniques.

S. Jack Wei, M.D.S. Jack Wei, M.D.

Dr. Wei is board certified in radiation oncology by the American Board of Radiology. He graduated from medical school at Washington University in St. Louis, Missouri and received his residency training at the University of Pennsylvania where he served as chief resident. After residency, Dr. Wei practiced at the University of Arizona prior to joining Community Health Network in 2006.

Dr. Wei is a member of many professional associations, including the American Society for Radiation Oncology, American Society of Clinical Oncology and the Indiana State Medical Association.

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