The OSUCCC – James colon cancer treatment team includes internationally recognized colon cancer experts and world-renowned cancer specialists in the prevention, diagnosis, genetic sequencing and treatment of individual colon cancers.

Working together and across medical disciplines, this specialized team develops individualized, highly targeted treatment plans that specifically target the molecular and biological makeup of each patient’s own individual colon cancer.

To make an appointment, please call The James Line at 614-293-5066 or 800-293-5066. The James Line is a free, confidential telephone service staffed by oncology nurses to provide callers with cancer information and physician referrals. The James Line is available weekdays from 8 a.m. to 4:30 p.m.


Samer El-Dika, MD

Director of Endoscopic Quality and Outcomes Skilled in advanced therapeutic endoscopy Special interest in pancreatic and biliary disorders . Read More

Somashekar Krishna, MBBS, MPH

Advanced endoscopy training at MD Anderson Cancer Center, 2012 Director of Clinical Research, Gastroenterology, Hepatology and Nutrition Department, 2013. Read More

Jon Walker, MD

Rated in the top 10 percent of physicians in the nation for patient satisfaction, 2014, 2015, 2016. Read More

Medical Oncology

Kristen Ciombor, MD

I’m a medical oncologist who treats patients with all types of gastrointestinal cancers, which include colorectal, small bowel, esophageal, gastric, liver, pancreatic, biliary, anal and neuroendocrine tumors. Read More

John Hays, MD, PhD

I specialize in treating peritoneal cancers stemming from gastrointestinal and gynecological origins such as ovarian, colorectal cancer and cancers of the appendix and small intestine. Read More

Anne Noonan, MBBCh

I’m a medical oncologist focusing on breast cancer and gastrointestinal malignancies such as esophageal, pancreatic and colorectal cancers, as well as hepatocellular carcinoma. Read More

Sameek Roychowdhury, MD, PhD

As a medical oncologist I specialize in treating patients with advanced prostate and colorectal cancers, including soft tissue sarcoma. Read More

Manisha Shah, MD

I’m a medical oncologist specializing in treating patients with neuroendocrine, thyroid and adrenal cancers. Read More

Surgical Oncology

Sherif Abdel-Misih, MD

Rated in the top 10 percent of physicians in the nation for patient satisfaction, 2016. Read More

Carl Schmidt, MD

Rated in the top 10 percent of physicians in the nation for patient satisfaction, 2014, 2016. Read More

Mary Dillhoff, MD

I’m a surgical oncologist with a specialty in diagnosing and treating patients with tumors of the liver, bile duct, pancreas and stomach. Read More

Timothy Pawlik, MD, MPH, PhD

I’m a surgical oncologist with a focus on treating patients with liver, gallbladder, pancreatic and neuroendocrine tumors. Read More

Colorectal Surgery

William Cirocco, MD

First recipient American Society of Colon and Rectal Surgeons (ASCRS) Victor W. Fazio, MB, MS Award for Editorial Excellence, 2007 Associate Editor, Diseases of the Colon and Rectum, 2003-present Program Director, Colon & Rectal Surgery Residency Examination Committee American Board of Colon and Rectal Surgeons, 2010-present . Read More