Mary Dillhoff, MD

The James Cancer Center
Mary Dillhoff

A physician, or doctor, is extensively trained to diagnose and treat complex medical problems. Often, physicians focus their practice on certain disease categories, treatment methods or patient types. Physicians can diagnose and treat illness, prescribe medication, offer medical consultation and advice, perform surgery and more.


  • Surgical Oncology

Clinical Expertise

  • Paraneoplastic Syndromes, Ocular
  • Gastrointestinal Cancers
  • Neuroendocrine Tumors
  • Pancreatic Cyst
  • Stomach Cancers
  • Minimally Invasive Surgical Procedures
  • Robotics
  • Carcinoma, Pancreatic Ductal
  • Pancreatic Cancers
  • Liver Cancers
  • Gallbladder Cancers
  • Small Intestine Cancer
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I’m a surgical oncologist with a specialty in diagnosing and treating patients with tumors of the liver, bile duct, pancreas and stomach. Care here at the OSUCCC – James starts with an evaluation by our multidisciplinary team to determine the best therapy, targeted treatments and possible clinical trials that may benefit the patient. I was rated in the top 10 percent of physicians in the nation for patient satisfaction in 2016.

I use robotic surgery and minimally invasive techniques as often as possible to improve recovery time for the patient. Presently I'm working to develop our robotic gastric surgery program. Additionally I serve as an assistant professor of internal medicine at The Ohio State University College of Medicine.

My passion is to help patients through their illness by giving them the very best clinical care, while also researching these diseases to better treat or prevent them in the future. I’m currently investigating circulating tumor DNA in patients with pancreatic cancer and cystic lesions of the pancreas. We’re also evaluating adjuvant systemic therapies in metastatic pancreatic neuroendocrine tumors.

It’s a privilege to be affiliated with The James. Working with this world-class team allows me to give patients the very best care. Because of our status as a National Cancer Institute (NCI)-Designated Comprehensive Cancer Center, we’re able to enroll patients in clinical trials and offer them the most advanced therapies. It’s gratifying to know we’ve helped a cancer patient through a big part of their treatment. It’s also an honor to be there in their time of need.

Education and Background


  • University of Cincinnati College of Medicine

    Cincinnati, OH


  • Ohio State University Wexner Medical Center

    Columbus, OH


  • Surgical Oncology

    Memorial Sloan-Kettering Cancer Center

    New York, NY

Board Certifications

  • American Board of Surgery

Academic Department

  • Department of Surgery
  • Division of Surgical Oncology

I see patients at

The James at Martha Morehouse Outpatient Care

2050 Kenny Road, Columbus, Ohio 43221


Consulting and Related Relationships

At The Ohio State University Wexner Medical Center, we support a faculty member’s research and consulting in collaboration with medical device, research and/or drug companies because a faculty member’s expertise can guide important advancements in the practice of medicine and improve patient care. In order to provide effective management of these relationships, the university requires annual disclosures from all faculty members with external interests related to their university responsibilities. As of 12/20/2018, Dr. Dillhoff has reported no relationships with companies or entities.


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