Our gastrointestinal team includes preeminent experts in the study, diagnosis and treatment of stomach 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.


Medical Oncology

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

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

Jeffrey VanDeusen, MD, PhD

I was named to the Castle Connolly list of “Regional Top Doctors” in 2018 and rated in the top 10 percent of physicians in the nation for patient satisfaction in 2017. Read More

Surgical Oncology

Sherif Abdel-Misih, MD

I’m a surgical oncologist with a focus on treating patients with a variety of gastrointestinal cancers Read More

Jordan Cloyd, MD

I am a surgical oncologist who cares for patients with gastrointestinal, hepatopancreatobiliary, neuroendocrine, and peritoneal surface malignancies 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

Andrei Manilchuk, MD

My areas of expertise include general and gastrointestinal surgery, minimally invasive surgery and surgical oncology Read More

Kyle Perry, MD

My expertise in minimally invasive surgery provides my patients with many treatment options Read More

Gastroenterology

Kristin Dittmar, MD

I am the Section Head of Body Interventional Radiology and an Associate Professor in the Department of Radiology Read More

Radiation Oncology

Dayssy Diaz Pardo, MD

I’m a radiation oncologist specializing in genitourinary and gastrointestinal cancer Read More