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David Dietz, MD


David Dietz, MD
Department: Colorectal Surgery
Vice Chair
Location: Cleveland Clinic Main Campus
Mail Code A30
9500 Euclid Avenue
Cleveland, OH 44195
Type of Doctor:
Both Adults and Children & Adolescents

Biographical Sketch

David W. Dietz, MD, is Vice Chairman of the Department of Colorectal Surgery. He also serves as the Program Director for the Cleveland Clinic Colorectal Surgery Fellowship Program and holds the Thomas C. and Sandra S. Sullivan Family Endowed Chair in Colorectal Surgery.

His specialty interests include surgical treatment of both recurrent and locally-advanced rectal cancer, Crohn’s disease, ulcerative colitis, reoperative abdominal and pelvic surgery, and continent ileostomy procedures.

Dr. Dietz earned his medical degree from Jefferson Medical College of Thomas Jefferson University in Philadelphia, PA. He completed a residency in general surgery and fellowship in colon and rectal surgery at the Cleveland Clinic in Cleveland, OH.

He is certified by the American Board of Surgery and the American Board of Colon and Rectal Surgery.

He is a Fellow in both the American Society of Colon and Rectal Surgeons and the American College of Surgeons. He is a member of the Society for Surgery of the Alimentary Tract, the Society of American Gastrointestinal Endoscopic Surgeons, the Association for Academy Surger,y and the International Society for Gastrointestinal Hereditary Tumors.

He has published a number of articles in peer-reviewed journals on topics such as rectal cancer, Crohn’s disease, ileal pouch anal anastomosis, and reoperative surgery. He has also written chapters in several colorectal surgery textbooks and has been an invited speaker in his areas of expertise at both national and international meetings.

Dr. Dietz also serves as a Council Member and leader in the Consortium for Optimizing the Surgical Treatment of Rectal Cancer (OSTRiCh), a national consortium of healthcare institutions that was formed in 2011 to improve the quality of rectal cancer care in the U.S.(www. The OSTRiCh group is currently collaborating with the American College of Surgeon’s Commission on Cancer to create the National Rectal Cancer Accreditation Program (NRCAP).

Education & Fellowships

Fellowship - Cleveland Clinic
Colorectal Surgery
Cleveland, OH USA
Residency - Cleveland Clinic
General Surgery
Cleveland, OH USA
Internship - Allegheny General Hospital
General Surgery
Pittsburgh, PA USA
Medical School - Jefferson Medical College of Thomas Jefferson University
Philadelphia, PA USA
Undergraduate - Washington and Lee University
Lexington, VA USA


  • Colon & Rectal Surgery
  • Surgery

Specialty Interests

Carcinoma of the small bowel and large bowel, colon and rectal cancer, colon and rectal surgery, Colon Cancer, continent ileostomy procedure, Crohn's Disease, inflammatory bowel disease, rectal cancer, reoperative abdominal and pelvic surgery, surgery for Crohn's Disease and ulcerative colitis


  • Fellow, American Society of Colon and Rectal Surgeons
  • Fellow, American College of Surgeons
  • Member,  Society of Surgical Oncology
  • Member, The Society for Surgery of the Alimentary Tract
  • Member, Association for Academic Surgery

Treatment & Services

Specialty in Diseases and Conditions

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 12/9/2015, Dr. Dietz has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers’ discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Languages Spoken

  • English

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