Treatment & Services
- 24-Hour Esophageal pH Test
- Abnormal Liver Tests
- Anorectal Manometry
- Argon Plasma Coagulation (APC)
- Blood Tests
- Cancer Screening
- Capsule Endoscopy
- Endoscopic Mucosal Resection
- Endoscopic Ultrasound
- Endoscopic Ultrasound-guided Celiac Block
- Enteral Stent Placement
- Esophageal Band Ligation
- Esophageal Dilation
- Esophageal Manometry Test
- Esophageal Motility Testing
- Flexible Sigmoidoscopy
- Hydrogen Breath Test
- Lactose and Glucose Hydrogen Breath Test
- Motility Catheter Placement
- Nasojejunal Tube Placement
Specialty in Diseases & Conditions
- Abdominal Pain
- Alpha-1 Antitrypsin Deficiency
- Anal Cancer
- Anal Fissures
- Angiodysplasia of Small Bowel
- Autoimmune Chronic Hepatitis
- Avoiding Dehydration, Proper Hydration
- Barrett's Esophagus
- Bile Duct Cancer
- Bile Duct Diseases
- Bile Duct Obstruction
- Bile Duct Stones
- Bowel Incontinence
- Caustic Ingestion
- Celiac Disease (Celiac Sprue)
- Clostridium Difficile Colitis
- Collagenous Colitis
- Colon Polyps
- Colorectal Cancer
- Crohn's Disease
- Diseases of the Liver Biliary Tract and Pancreas
- Duodenal Polyps
- Eosinophilic Esophagitis
- Eosinophilic Gastroenteritis
- Esophageal Cancer
- Esophageal Varices
- Extrahepatic Bile Duct Cancer
- Failure To Thrive
- Familial Adenomatous Polyposis
- Fatty Liver Disease
- Food Borne Illness
- Foreign Body Ingestion
- Fundic Gland Polyps
- Gallbladder Cancer
- Gallbladder Disease
- Gas (Digestive)
- Gastroesophageal Reflux (GERD)
- Gastrointestinal Tract
- General Gastroenterological Disorders
- GI Bleeding
- Heliocobactor Pylori
- Hepatitis A
- Hepatitis B
- Hepatitis C
- Hereditary Non Polyposis Colorectal Cancer
- Hiatal Hernia
- Hirschsprung's Disease
- Inflammatory Bowel Disease (IBD)
- Intestinal Ischemic Syndrome
- Intestinal Pseudo-Obstruction
- Irritable Bowel Syndrome (IBS)
- Juvenile Polyposis
- Lactose Intolerance
- Large Intestine Cancer
- Liver Cancer
- Liver Disease
- Metabolic Syndrome
- Microscopic Colitis
- Milk Allergies
- Pancreatic Cancer
- Pancreatic Cysts
- Pancreatic Disease
- Pancreatic Stones
- Peptic Ulcer Disease
- Peutz- Jeghers Syndrome
- Polyposis Syndromes
- Portal Hypertension
- Post-Gastrectomy Syndrome
- Primary Biliary Cirrhosis
- Primary Sclerosing Cholangitis
- Proctitis - Care & Treatment
- Radiation Enteritis
- Rectal Prolapse
- Short Bowel Syndrome
- Small Bowel Bacterial Overgrowth
- Small Bowel Disease
- Small Intestine Cancer
- Stomach Cancer
- Strictures Of The Gi Tract
- Swallowing Disorders
- Tracheoesophageal Fistula
- Trichinosis Overview
- Ulcerative Colitis
- Whipple's Disease
- Wilson Disease
- Zollinger-Ellison Syndrome
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Education & Professional Highlights
Education & Fellowships
Graduate - University of Michigan Ross School of Business
Ann Arbor, MI USA
Fellowship - University of Iowa Hospitals and Clinics
Iowa City, IA USA
Residency - University of Illinois at Chicago Hospitals
Chicago, IL USA
Medical School - Wayne State University School of Medicine
Detroit, MI USA
Undergraduate - Wayne State University
Detroit, MI USA
- Internal Medicine - Gastroenterology
patient reported outcomes, quality in endoscopy, 30-day readmissions, operations, business development
Research & Publications
(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.)
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 12/13/2017, Dr. Rizk 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.
Donation of Financial Interest. Dr. Rizk has consulted for, received compensation for serving as a fiduciary from, or received royalties from the following companies but instructed them to donate all compensation to not-for-profit causes or to the Cleveland Clinic to support research and education:
- AbbVie, 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.
178 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.
|Courtesy, Respect & Concern||4.9|
|Knows Medical History||4.5|
|Time Spent with Patient||4.8|
|Patient Rating of Doctor||4.7|
14 Patient Comments
Reviewed on May 22, 2018
the doctor was really nice & very helpful! the treatment plan is working and I'm feeling better
Reviewed on May 3, 2018
One of the best doctors I have ever met ! He is compassionate and understanding ! I would recommend him to anyone ! He's the greatest !
Reviewed on Apr 19, 2018
Dr Rizk and his staff were excellent
Reviewed on Apr 19, 2018
I would recommend to family friends and others to come to Cleveland clinic and see dr.Rezik.
Reviewed on Mar 29, 2018
Doctor was extremely helpful! Very professional and knowledgeable. Eased my fears and changed my day! I would totally recommend him to anyone!
Reviewed on Mar 6, 2018
Dr Rizk was very easy to speak with and really listened to me. He spent time going over a CT scan that my primary doctor had ordered.
Reviewed on Mar 5, 2018
My only complaint was how quickly Dr. Rizk spoke to me when preparing for my colonoscopy. He seemed rigid and a bit too "business-like".
Reviewed on Feb 26, 2018
Dr Rizk explained everything and put me at ease. It was over before I knew it.
Reviewed on Jan 11, 2018
It was not one of my better visits with a provider. It was not well organized in that there was no medical history to review before I was put in an exam room. It was more like winging it. When I left I was not sure of everything that happened other than I was to have a SMART pill test. Getting it done in Columbus was a lot of effort on my part. It took several emails to this provider to finally agree to send a referral to The Ohio State University to have the testing performed there thus saving me time so I would not have to travel back to Cleveland to have it performed. I live in Columbus. I will have to travel back to Cleveland to get the results of the test, hopefully a diagnosis & a treatment plan. I hope my next visit is better than this one.
Reviewed on Jan 11, 2018
I did not really check out. There was no return appointment set up. I will have to call after I get the SMART pill testing done. Communication & organization of the whole process was off compared to other visits I have had in the past with other medical specialists outside of the Cleveland Clinic.
Reviewed on Oct 31, 2017
No follow-up care necessary. The most important aspect of Dr. Rizk is that he listens and gives time. (Not rushed to get on to the next pt.)
Reviewed on Oct 24, 2017
he set up for me to message him with how the medications are working rather than waste both our time with me comming in unless it is needed because the medication is not as effective as we both hope it will be
Reviewed on Sep 7, 2017
Dr. Rizk was very attentive, caring, knowledgeable, and concerned about my condition and truly wants to help me with my ongoing IBS discomfort. His complete attention to my past health issues made me very happy to be able to be under his care! His evaluation of my condition and his suggestions made me feel better about this condition I deal with often, and I am so glad I am now his patient. This appointment was a very good experience!
Reviewed on Jun 22, 2017
This was my first visit with Dr. Risk, and from the moment he walked in the door he put me at ease. Very friendly, respectful, kind, and caring. He listened and acknowledged what I had to say, and also made sure I understood what he was saying.
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