Department Digestive Disease and Surgery Institute
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English
Surgeon Yes
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus


Additional Locations

Specialties & Treatments

Treatment & Services

  • Abdominal Perineal Resection
  • Cancer Center
  • Colectomy
  • Colon And Rectal Surgical Procedures
  • Colon Surgery
  • Laparoscopic Abdominal Perineal Resection
  • Laparoscopic and Robotic-Assisted Laparoscopy
  • Laparoscopic Colectomy
  • Laparoscopic Colon Resection
  • Laparoscopic Colorectal Surgery
  • Laparoscopic Surgery
  • Laparoscopic Surgery for Digestive Diseases
  • Laparoscopic Surgery for Prolapse
  • Minimally Invasive Cancer Surgery
  • Minimally Invasive Colorectal Surgery
  • Minimally Invasive Surgery
  • Rectal Cancer Surgery
  • Rectal Surgery
  • Rectal-Sparing Operations For Carcinoma Of The Rectum
  • Resection of Colon and Rectal Diseases
  • Robotic Colorectal Surgery
  • Surgery For Carcinoma Of The Colon
  • Surgery For Crohn's Disease
  • Surgery for Rectal Prolapse
View all 24 Treatment & Services +

Specialty in Diseases & Conditions

  • Cancer
  • Colon Diseases
  • Colorectal Cancer
  • Crohn's Disease
  • Diverticulosis
  • Inflammatory Bowel Disease (IBD)
  • Large Bowel Cancer
  • Rectal Cancer
  • Rectal Prolapse
  • Ulcerative Colitis
View all 10 Specialties +


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About Conor Delaney, MD, PhD

Conor P. Delaney, MD, PhD, is Chairman of the Digestive Disease and Surgery Institute at Cleveland Clinic since 2015, and holds the Victor W. Fazio MD Endowed Chair in Colorectal Surgery. He holds a Master of Surgery degree and PhD from the University College Dublin in Ireland. His postgraduate education included a residency through the Royal College of Surgeons in Ireland, and fellowships at the University of Pittsburgh, and the Cleveland Clinic.

Dr. Delaney was a Staff surgeon at Cleveland Clinic in the Departments of Colorectal and Minimally Invasive Surgery from 2000-2005. He was recruited to University Hospitals Case Medical Center in Cleveland, where he spent 10 years as Chief of the Division of Colorectal Surgery and Vice-Chair of Surgery. He was also named as Surgical Director of the Digestive Health Institute, and was honored with the inaugural Murdough Master Clinician Award in Colorectal Surgery, and the Jeffrey L. Ponsky MD endowed Professorship in Surgical Education.

Dr. Delaney has received a number of prizes, scholarships and awards over the course of his career in training, education and research. He is a member and serves on administrative committees of many national and international professional societies, serves on the editorial board of eight national and international journals, and is the founder and past-president of the International Society of Laparoscopic Colorectal Surgery, and the Midwest Surgical Association.

Dr. Delaney has given many lectures nationally and internationally and has published seven books and three hundred other manuscripts in scientific journals on topics relating to surgical education, colon and rectal cancer surgery, minimally invasive colorectal surgery and peri-operative care for intestinal surgery. His clinical interests include laparoscopic colorectal surgery; carcinoma of the colon, rectum and anus; Crohn’s disease and ulcerative colitis, sphincter-saving surgery; re-operative abdominal surgery and colonoscopy. His research interests include various aspects of colorectal surgery, techniques of surgery, optimization of post-operative recovery, optimization of value in clinical care, and surgical education.

Dr. Delaney has been listed for inclusion in Cleveland Magazine Top Docs, Cleveland Super Docs, Northern Ohio Live Top Docs, Best Doctors in America, Castle Connolly's America's Top Doctors and America's Top Doctors for Cancer, Patients Choice Award, as well as Who's Who in Medicine, Who's Who in America, Who's Who in the World, and Who's Who for Executives and Health Care Professionals, Strathmore's Who's Who, Compassionate Doctor Award (Patients Choice), American Top Physicians for Cancer, and in US News Top 1% of Doctors.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Graduate School - University College Dublin (National University of Ireland)

Fellowship - Cleveland Clinic
Colorectal Surgery
Cleveland, OH USA

Fellowship - Royal College of Surgeons Ireland
General/Colorectal Surgery
Dublin, Ireland

Graduate School - University College Dublin (National University of Ireland)

Residency - Royal College of Surgeons Ireland
General Surgery
Dublin, Ireland

Internship - Mater Misericordiade Hospital

Medical Education - University College of Dublin, Faculty of Medicine


  • General Surgery

Specialty Interests

laparoscopic colorectal surgery, carcinoma of the colon, rectum and anus, crohn's disease and ulcerative colitis, sphincter-saving surgery, reoperative abdominal surgery, colonoscopy

Awards & Honors

  • 1987 Henderson Prize. Best undergraduate research, Mater Misericordiae Hospital.
  • 1988 Leonard Prize. Best undergraduate dissertation at the Mater Misericordiae Hospital
  • 1989 Gold Medal in Surgery. Final medical prize examination, Mater Misericordiae Hospital
  • 1994 Ph.D. scholarship. Graduate School of Medicine, University of Pittsburgh.
  • 1995 Ortho-Biotech Transplant Fellow. Best presentation at Annual Transplant Fellow’s Meeting, American Society of Transplant Physicians, New Orleans.
  • 1996 European School of Oncology Fellowship
  • 1997 Ethicon Foundation Travel Grant. Award to travel to RCSE - Pelvic Surgery course.
  • 1998 Irish Travelling Fellowship. To Royal Society of Medicine, Section of Coloproctology.
  • 1998 Ethicon Foundation Travel Grant
  • 1999 Surgical Travelling Fellowship of the Royal College of Surgeons in Ireland
  • 2000 Outstanding Clinical Fellow, Dept. Colorectal Surgery, Cleveland Clinic Foundation
  • 2000 ‘KIWI’ Award - Best Endoscopist in Training. Dept. of Colorectal Surgery, Cleveland Clinic
  • 2000 ACG/Astra Zeneca Senior Fellow Award. Amer. Coll. Gastroenterology, NY, Nov 2000.
  • 2001 24th Millin Medal. Medal with named lectureship, Royal College of Surgeons in Ireland
  • 2003 Best of the Best – 2002. Delaney CP et al, Ann Surg 2002; 236: 203-7 awarded as best colorectal paper of international literature by Archives of Surgery (2003; 138: 1266).
  • 2004 Associacio Brasileira de Colite Ulcerativa e Doenca de Crohn (Brazilian Association for Ulcerative Colitis and Crohns Disease). Honorary Membership. Presented by Dr Flavio Steinwurz, San Paulo, May 6th, 2004.
  • 2004 David Dunn Medal for best oral presentation. Awarded by the Association of Endoscopic Surgeons of Great Britain and Ireland, ASGBI Scientific Meeting, April 2004. “Conversion rates in laparoscopic colorectal surgery – a predictive model on 1253 patients”.
  • 2004 New England Society of Colon and Rectal Surgeons Award for best oral presentation (presenter and first author). ASCRS May 2004. “Prospective, randomized, double-blind, multicenter, placebo-controlled study of alvimopan, a novel peripherally acting mu opioid receptor antagonist, for postoperative ileus after major abdominal surgery (Study 14CL302).”
  • 2006 Colorectal Surgical Society of Australia and New Zealand. Honorary Membership. Presented by Dr Michael Levitt, Queenstown, Sept 29th, 2006.
  • 2007 Northwest Society of Colon and Rectal Surgeons Award for best oral presentation (presenter; sole author). ASCRS 2007. “Outcome of discharge within 24-72 hours of laparoscopic colorectal surgery.”
  • 2009 Inaugural Jeffrey L. Ponsky Professor of Surgical Education, Case Western Reserve University School of Medicine, Cleveland, Ohio
  • 2009 Honorary Fellowship of the American Society of Colon and Rectal Surgeons
  • 2011 Inaugural Murdough Master Clinician in Colorectal Surgery Award, University Hospitals Case Medical Center. Inaugural endowed Master Clinician Award.
  • 2012 Mexican Society of Rectum and Colon Surgeons and Mexican College of Specialists in Coloproctology. Honorary International Fellowship.
  • 2012 Midwest Surgical Association Best Paper Award for best oral presentation. “Extraction site incision and incisional hernias after laparoscopic colorectal surgery: Should we be avoiding the midline?”

Innovations & Patents

  • “Anoscope for inspection and/or surgery.” US 8097002 B2. Issue date 1/17/2012. Chinese patent #: 200880017588.4 Issue date 12/16/2011
  • “Headset with laser pointer”. US 9039224. Issue date 5/26/2015.
  • “Method and System for Extraction and Analysis of Inpatient and Outpatient Encounters from One or More Healthcare Related Information Systems”. UH-Socrates™ Knowledge Management System. US Provisional Application Serial No. 61/443,853.
  • “Subcutaneous hydration system, method and device”. US Provisional Application Serial No. 14/211,006.
  • Socrates Analytics Inc. Founder. November 2011
Research & Publications

Research & Publications

See publications for Conor Delaney, MD, PhD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

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 1/5/2019, Dr. Delaney has reported the financial relationships with the companies listed below. 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.

Royalty Payments. Dr. Delaney receives or has the right to receive royalty payments for inventions or discoveries commercialized through the companies shown below:

  • Socrates Analytics, Inc.

Equity Dr. Delaney owns stock or stock options in the following companies for activities as a founder, inventor, discover, developer:

  • Socrates Analytics, Inc.

Fiduciary Role. Dr. Delaney serves in a fiduciary capacity, such as an elected officer, director or chief medical officer, for the following companies or other entities:

  • Socrates Analytics, Inc.

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.

Patient Satisfaction Reviews

90 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.9
Listens 4.9
Courtesy, Respect & Concern 4.9
Knows Medical History 4.7
Time Spent with Patient 5
Patient Rating of Doctor 4.9

16 Patient Comments

Reviewed on Sep 16, 2019

Alicia in Dr. Delaney's office is awesome! She returns all of my calls the same day or next at the latest and has been able to answer every question I have.

Reviewed on Sep 16, 2019

Dr. Delaney was extremely kind and thorough. He explained all risks and benefits of the surgery he will be performing and answered all of my questions.

Reviewed on Sep 9, 2019

I could not have been happier with my consultation with Dr Delaney. He asked questions about my condition but didn't stop there. He did an exam and collected biopsies to gather information on the best path forward. His process was first to determine whether surgery would be beneficial and if so what was the minimal surgery required for a successful outcome. He then drew pictures of the possible surgeries to help us understand. I thought I was only going to get 20 minutes to talk to him and that would be it. I got so much more.

Reviewed on Jul 2, 2019

*Dr. Delaney was phenomenal & very attentive.

Reviewed on Apr 29, 2019

Dr. Delaney was great but his fellow Dr. Smith was also great!

Reviewed on Apr 22, 2019

As usual, the care and treatment provided by everyone at the clinic involved in my visit was super.Sr Delaney is an extraordinary physician and person. I am privileged to be under his care.

Reviewed on Feb 25, 2019

Dr. Delaney is excellent, with a very comforting "bedside manner."

Reviewed on Feb 4, 2019

We are very thankful for the cleveland clinic and for the wonderful care and treatment of all involved, especially Dr Delaney

Reviewed on Jan 14, 2019

Dr.Delaney, his fellow, and nurse were not only highly professional and skilled, but also provided a reassuring and calming milieu. Dr. Delany is truly a gifted surgeon with a bedside manner unlike anyone I'v encountered as a patient or as a consulting University psychologist.

Reviewed on Jan 7, 2019

My provider is timely, personable and accommodates any questions I present to him. I am very thankful for his services and expertise.

Reviewed on Dec 20, 2018

*Dr. Delaney is awesome!

Reviewed on Dec 17, 2018

very good, thankful that my Doctor is very thorough!

Reviewed on Dec 17, 2018

My doctor is thorough, and I like his manner.

Reviewed on Dec 17, 2018

long wait before seeing the doctor in the exam room, very busy Doctor, and delay of final report from ct scan!

Reviewed on Oct 18, 2018

*Dr. Delaney was excellent in every way.

Reviewed on Oct 1, 2018

Waited for Dr Delaney for over an hour and twenty minutes. He said he had to give a second opinion that took longer than anticipated. We waited in the exam room for all that time and no one informed us as to the delay and they made no effort to allow us a more comfortable area to wait. This is the only time this has happened and we recommend the staff have patient info and comfort in mind with this long wait.

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