Department Colorectal Surgery
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English, French, German, Greek, Italian, Latin, Spanish
Surgeon Yes
Locations Specialties & Treatments

Treatment & Services

  • Cancer Center
  • J Pouch
  • Laparoscopic Colorectal Surgery
  • Minimally Invasive Colorectal Surgery
  • Ostomy Reversal and Creation
  • Pelvic J-pouch Creation
  • Reoperative Abdominal and Pelvic Surgery
  • Reoperative Abdominal Surgery
  • Reoperative Pelvic Surgery
  • Robotic Colorectal Surgery
  • Sphincter Sparing Surgery
  • Surgery For Crohn's Disease
  • Surgery for Crohn's Disease and Ulcerative Colitis
  • Surgical Treatment for Mucosal Ulcerative Colitis
View all 14 Treatment & Services +

Specialty in Diseases & Conditions

  • Cancer of the Colon, Rectum and Anus
  • Carcinoma of the Colon
  • Carcinoma of the small and large bowel
  • Colon Cancer
  • Colon Polyps
  • Colonic Neoplasia
  • Colorectal Cancer
  • Colorectal Cancer Screening Strategies
  • Crohn's Disease
  • Diverticulitis
  • Diverticulosis
  • Familial Adenomatous Polyposis
  • Inflammatory Bowel Disease (IBD)
  • Intestinal Endometriosis
  • Intestinal Fistula
  • Intestinal Fistulae
  • Polyps of the Colon and Rectum
  • Rectal Cancer
  • Ulcerative Colitis
View all 19 Specialties +


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About Hermann Kessler, MD, PhD

Hermann Kessler, MD, PhD, F.A.C.S is currently the Section Head of Minimally Invasive Surgery in the Department of Colorectal Surgery at Cleveland Clinic in Cleveland, Ohio.

Dr. Kessler obtained his medical degree and Ph.D. from the University Erlangen-Nürnberg, Germany.  There he completed his surgical training with board exams and certifications in General Surgery, Comprehensive Visceral Surgery, and Proctology. He finished two years of clinical and research fellowships for advanced laparoscopic colorectal surgery in the United States: the Cleveland Clinic and the Mount Sinai Medical Center in New York City. During these years, he participated and completed numerous scientific studies. In May 2007, Dr. Kessler was appointed Professor of Surgery at the University Erlangen-Nürnberg, Germany.

Dr. Kessler joined the Cleveland Clinic, Department of Colorectal Surgery as Section Head, Minimally Invasive Surgery in April 2013. On May 12, 2015, Dr. Kessler was appointed Professor of Surgery in the Department of Medicine in the Cleveland Clinic Lerner College of Medicine of Case Western Reserve University. Dr. Kessler is active in many other professional groups, including the American Society of Colon and Rectal Surgeons, International Society of Digestive Surgery, International Society of Laparoscopic Colorectal Surgery, Society of American Gastrointestinal & Endoscopic Surgeons, International Association of Surgeons, Gastroenterologists, & Oncologists, Society for Surgery of the Alimentary Tract, and the American College of Surgeons. Dr. Kessler’s specialty interests include laparoscopic and robotic surgery, colon and rectal carcinoma, Crohn’s disease, ulcerative colitis, inflammatory bowel disease, diverticulitis, pouch surgery, familial adenomatous polyposis, pelvic surgery, bowel fistula surgery, and intestinal endometriosis.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Mount Sinai Medical Center
Colorectal Surgery
New York, NY USA

Fellowship - Cleveland Clinic
Colorectal Surgery
Cleveland, OH USA

Medical Education - Medical School University of Erlangen-Nuremberg

Specialty Interests

Laparoscopic and robotic surgery, Crohn’s disease, ulcerative colitis, inflammatory bowel disease, familial adenomatous polyposis, pelvic surgery, intestinal endometriosis

Research & Publications

Research & Publications

See publications for Hermann Kessler, 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 12/3/2019, Dr. Kessler 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.

Patient Satisfaction Reviews

150 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
4.7 out of 5
Explains 4.6
Listens 4.8
Courtesy, Respect & Concern 4.8
Patient Rating of Doctor 4.7

15 Patient Comments

Reviewed on Oct 16, 2020

Dr. Kessler and his Fellow were both very caring and considerate.

Reviewed on Sep 29, 2020

Dr. Kessler is very professional, and does not sugar coat or "dumb down" any information. Although it would be difficult for a person without medical training to understand some of his terminology, but I really appreciated that he gave me straight information and answered any questions that I had.

Reviewed on Sep 8, 2020

Dr. Kessler is the best. He is a caring, kind provider who always takes into account my ideas and concerns. He offers appropriate options for my care, and regards his patients as people first (balanced with high quality medical care).

Reviewed on Sep 4, 2020

Excellent practitioner! A professional, caring physician in every aspect.

Reviewed on Jul 31, 2020

My doctors went above and beyond I brag on them they saved my life.

Reviewed on Jun 26, 2020

Shirley was excellent. She returned messages and made sure that she kept me in the loop as to all my files getting to the doctors, as I requested.

Reviewed on Jun 26, 2020

Dr. Kessler is clearly as very smart person. My one concern is that I did have some questions after thinking about what he said that I wish I had thought of at the time. Also, I feel like I am not sure what exactly his plan of action, if any, is. I know he does not want to do surgery right now, and because of the steroids, he cannot do it right now. However, I do hope that after my tests next week, we will have more options, including surgical if necessary, to try and help alleviate the constant pain. If not, then I hope he is willing to help me find a way to manage the pain in a more effective way. Or whether he feels there may be other things I could do to alleviate the pain.

Reviewed on Jun 26, 2020

The one thing I had a problem with is that they changed which surgeon was going to assess me two days before I was to be seen. I was originally scheduled with Dr. Dionigi: however, she was apparently leaving the Cleveland Clinic and felt I should see someone else. I feel that it was foolish to schedule me with someone who was going to leave. I wish you had thought this through better...that way, I might have had an easier time getting all the scans, etc. to Dr. Kessler before my appointment.

Reviewed on May 1, 2020

Dr Kessler and team were very thorough and answered all my questions I had

Reviewed on Mar 6, 2020

Dr. Kessler's was very thorough. He explained all aspects of the exam and upcoming procedures in a very caring and professional manner.

Reviewed on Feb 14, 2020

when the appointment was made with dr kessler, i feel i should have been told when he has clinic that I could wait for hours in a treatment room before he sees you.

Reviewed on Feb 4, 2020

Dr.Kessler is a caring kind person. I think so highly of him. Great doctor.

Reviewed on Jan 17, 2020

Barbara in Dr. Kessler's office has been very helpful in answering questions for me.

Reviewed on Jan 10, 2020

Dr. Kessler was excellent. he was caring, gentle, and highly competent. Thank you.

Reviewed on Jan 3, 2020

The doctor showed up right on time! did not have to wait at all. the staff at doctor's office was very nice and friendly.

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