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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

  • Abdominal Surgery
  • Advanced Laparoscopic Surgery
  • Advanced Operative Laparoscopy
  • Anorectal Fistula Treatment
  • Anorectal Surgery
  • Anoscopy
  • Cancer Center
  • Colectomy
  • Colon And Rectal Surgical Procedures
  • Colon Surgery
  • Colorectal Cancer - Prevention
  • Colorectal Cancer Diagnosis
  • Colorectal Cancer Research
  • Colorectal Cancer Screening Strategies
  • Colorectal Cancer Treatment
  • Colorectal Surgery
  • Colostomy
  • Consultation for Complicated Colon and Rectal Disease
  • Fecal Diversion
  • Flexible Sigmoidoscopy
  • Hemorrhoidectomy
  • Ileoanal Pouch
  • Ileostomy
  • Intestinal Stomas
  • J Pouch
  • Laparoscopic Colectomy
  • Laparoscopic Colon Resection
  • Laparoscopic Colon Surgery
  • Laparoscopic Colorectal Surgery
  • Laparoscopic Fecal Diversion
  • Laparoscopic Ileocolectomy
  • Laparoscopic Proctosigmoidectomy
  • Laparoscopic Surgery
  • Laparoscopic Surgery for Digestive Diseases
  • Laparoscopy
  • Minimally Invasive Colorectal Surgery
  • Ostomy Reversal and Creation
  • Pelvic J-pouch Creation
  • Pouch Center
  • Rectum Reoperative Abdominopelvic Surgery
  • Re-Do Rectal Surgery
  • Reoperative Abdominal and Pelvic Surgery
  • Reoperative Abdominal Surgery
  • Reoperative Pelvic Surgery
  • Reoperative Surgery
  • Resection of Colon and Rectal Diseases
  • Rigid Sigmoidoscopy
  • Robotic Colorectal Surgery
  • Rubber Band Ligation Of Hemorrhoids
  • Second Opinion
  • Sphincter Sparing Surgery
  • Stoma Surgery
  • Surgery
  • Surgery For Carcinoma Of The Colon
  • Surgery For Crohn's Disease
  • Surgery for Crohn's Disease and Ulcerative Colitis
  • Surgical Management for Ulcerative Colitis
  • Surgical Treatment for Mucosal Ulcerative Colitis
  • Total Abdominal Colectomy
  • Treatment for Anal Fissure
  • Treatment for Anal Fistula
View all 61 Treatment & Services +

Specialty in Diseases & Conditions

  • Abdominal Abscess
  • Adenomas
  • Adenomatous Polyps
  • Anal Abscesses
  • Anal Cancer
  • Anal Fissures
  • Anal Fistula
  • Anal Itching
  • Anal Pain
  • Anorectal Disease
  • Anorectal Fistula
  • Benign Anorectal Disease
  • Cancer
  • Cancer of the Colon, Rectum and Anus
  • Carcinoma of the Colon
  • Carcinoma of the small and large bowel
  • Colon Cancer
  • Colon Diseases
  • Colon Polyps
  • Colonic Neoplasia
  • Colorectal Cancer
  • Colorectal Cancer Screening Strategies
  • Colovaginal Fistula
  • Colovesticle Fistula
  • Crohn's Disease
  • Diverticulitis
  • Diverticulosis
  • Diverticulum
  • Endometriosis
  • Enterocutaneious Fistula
  • Familial Adenomatous Polyposis
  • Fap
  • Fissure
  • Hemorrhoids
  • Inflammatory Bowel Disease (IBD)
  • Intestinal Endometriosis
  • Intestinal Fistula
  • Intestinal Fistulae
  • Intestinal Ischemic Syndrome
  • Large Bowel Cancer
  • Large Intestine Cancer
  • Lesbian Gay Bisexual and Transgender LGBT Health
  • Polyps of the Colon and Rectum
  • Rectal Cancer
  • Small Bowel Cancer
  • Small Intestine Cancer
  • Stoma Related Problems
  • Ulcerative Colitis
  • Volvulus
View all 49 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, J-pouch creation, re-do pouches, 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 12/9/2021, 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

187 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 4.7
Listens 4.7
Courtesy, Respect & Concern 4.8
Patient Rating of Doctor 4.7

29 Patient Comments

Reviewed on Nov 9, 2021

I found the doctor to be courteous, informative and prompt.

Reviewed on Nov 5, 2021

Dr. Kessler is wonderful. His attention to detail and bedside manner are a large reason I travel to Cleveland Clinic.

Reviewed on Nov 2, 2021

*Dr. Kessler was very caring and professional. *Brittany discharged me, she was very good at explaining everything. Professional.

Reviewed on Sep 14, 2021

*Dr. Sam & *Dr. Kessler were awesome!

Reviewed on Sep 3, 2021

Dr. Kessler removed a cancer tumor from my colon on April 5, 2021. This resulted in my needing an ileostomy, We chose to do chemo and other treatments at Lifeworks in Florida which use IPT, Insulin Potentiated Therapy, to deliver chemo and other cancer fighting IVs. When we contacted Dr. Kessler to discuss closure of my ileostomy he refused because he disagreed with OUR CHOICE of treatment. He said "they are lying to you". He yelled at my husband and I several times during our talk. We know a lot about this treatment which has been used for over 70 years. He was far less than professional and a real disappointment. It is none of his business what treatment we choose.

Reviewed on Aug 13, 2021

Dr. Kessler has been the best doctor I have worked with in the last 10 years for my GI issues. He is very knowledgeable, he explains things to your understanding and he goes out of his way to help the patient.

Reviewed on Aug 13, 2021

He has been the best Dr I have ever seen.

Reviewed on Aug 6, 2021

It just got a little confusing to me w/ 2 physicians and the nurse as to exactly how my scheduled procedure and prep would go. I'd had this procedure a few times before so that part was ok but I needed to message the physician about the prep d/t conflicting info. & thought I could be on a waiting list but that turned out not to be true.

Reviewed on Aug 3, 2021

Dr. Kessler and his staff were very helpful, thorough, and professional. Dr. Kessler in particular was friendly, very thorough, and informative. I was great full that he was the one to see me.

Reviewed on Jul 16, 2021

I truly cannot say enough about Dr. Kessler-Initially I was a mess with worry and he has made me comfortable and confident, that I have put my full trust Into his hands for my scheduled surgery. He truly cares and his assurance has made me relax and not worry, all will be fine.

Reviewed on Jul 16, 2021

Dr. Kessler explained everything and made sure I understood. I had a very good experience.

Reviewed on Jun 15, 2021

Outstanding care provider.

Reviewed on May 28, 2021

I called they made the appointment for the next day which was excellent. very quick. Dr. Kessler was very nice everyone was very nice and informative I was very pleased

Reviewed on May 28, 2021

I am feeling at ease with having my consultation w/Dr. Kessler. His manner in explaining surgery, introducing his, RN assistant, fellow and scheduler made me feel part of his team. Not saying I want to have surgery, but I can say, I know I will be in the best hands. Blessings for all of them!

Reviewed on May 14, 2021

Dr Kessler and his resident doctor were beyond super nice. I give them both A++++

Reviewed on May 7, 2021

Dr. Kessler is a great doctor and made sure to hear out my concerns and really let me feel very involved in my care

Reviewed on Apr 30, 2021

Dr Kessler is by far one of the most considerate, informative, kind-hearted physicians I have ever had the pleasure of being treated by. He has a kind disposition, warm sense of humor and is undeniably gifted in his role as a Colorectal Surgeon at the Cleveland Clinic.

Reviewed on Apr 23, 2021

Dr. Kessler was very informative and reassuring, I felt he cared about me.

Reviewed on Apr 21, 2021

*Dr. Kessier and his team *Dr. Leeds & *Dr. Rawl Fellows & PA *Taylor Boice were amazing they spent so much time answering questions & explaining things to me.

Reviewed on Apr 16, 2021

I have never had a better experience with a health care provider. Very good as a answer to these questions is not a high enough praise.

Reviewed on Apr 9, 2021

my interaction with the doctor was probably the best I've had with any provider in terms of answering questions, showing care of my concerns, and making me feel at ease regarding my upcoming procedures.

Reviewed on Mar 30, 2021

Dr. Kessler saved my life 4.75 years ago and continues to monitor my post surgical care! I have the highest regard for his professionalism and expertise.

Reviewed on Mar 7, 2021

I could not have been in better hands for surgery. Doctor & team excellent!

Reviewed on Mar 5, 2021

I have a high regard for Dr. Kessler trust his judgment

Reviewed on Feb 23, 2021

Dr Kessler and Dr Click have great bedside manners.

Reviewed on Feb 16, 2021

I literally cannot say enough great things about Dr. Kessler. He is my hero!

Reviewed on Feb 9, 2021

very comfortable and was well informed and I felt like he's the right doctor for me .

Reviewed on Jan 21, 2021

*Dr. Kessler and PA *Taylor Boice were very attentive & helpful.

Reviewed on Jan 15, 2021

I saw Dr. Kessler in the hallway before my surgery. I know I see him in the operating room as well but this meeting in the hallway really made me feel good about my surgery. It was just that personal interaction. Dr. Kessler is great 10/10 definitely recommend.

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