The 20 Best Irritable Bowel Syndrome (IBS) Doctors Near Me in Ontario, CA

Find the Top Irritable Bowel Syndrome (IBS) Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 54 doctor with experience in Irritable Bowel Syndrome (IBS) near Ontario, CA. Of these, 40 are Experienced, 7 are Advanced, 4 are Elite and 3 are Distinguished.

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54 providers found
    Elite in Irritable Bowel Syndrome (IBS)

    Stephen J. Vanner
    Elite in Irritable Bowel Syndrome (IBS)

    Stephen J. Vanner
    Kingston, ON, CA 

    Stephen Vanner practices practicing medicine in Kingston, Canada. Mr. Vanner is rated as an Elite expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Acute Pain, Viral Gastroenteritis, Colonoscopy, and Endoscopy.

    Elite in Irritable Bowel Syndrome (IBS)

    Premysl Bercik
    Elite in Irritable Bowel Syndrome (IBS)

    Premysl Bercik
    Hamilton, ON, CA 

    Premysl Bercik practices practicing medicine in Hamilton, Canada. Bercik is rated as an Elite expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). They are also highly rated in 9 other conditions, according to our data. Their clinical expertise encompasses Irritable Bowel Syndrome (IBS), Celiac Disease, Malabsorption, Vagotomy, and Colonoscopy.

    Elite in Irritable Bowel Syndrome (IBS)

    Paul M. Moayyedi
    Elite in Irritable Bowel Syndrome (IBS)

    Paul M. Moayyedi
    Hamilton, ON, CA 

    Paul Moayyedi practices practicing medicine in Hamilton, Canada. Mr. Moayyedi is rated as an Elite expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 19 other conditions, according to our data. His clinical expertise encompasses Indigestion, Irritable Bowel Syndrome (IBS), Viral Gastroenteritis, Endoscopy, and Colonoscopy.

    Learn about our expert tiers
    Elite in Irritable Bowel Syndrome (IBS)

    Stephen M. Collins
    Elite in Irritable Bowel Syndrome (IBS)

    Stephen M. Collins
    Hamilton, ON, CA 

    Stephen Collins practices practicing medicine in Hamilton, Canada. Mr. Collins is rated as an Elite expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Viral Gastroenteritis, Colitis, and Generalized Anxiety Disorder (GAD).

    Distinguished in Irritable Bowel Syndrome (IBS)

    Giada De Palma
    Distinguished in Irritable Bowel Syndrome (IBS)

    Giada De Palma
    Hamilton, ON, CA 

    Giada De Palma practices practicing medicine in Hamilton, Canada. Ms. De Palma is rated as a Distinguished expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Irritable Bowel Syndrome (IBS), Generalized Anxiety Disorder (GAD), Intestinal Pseudo-Obstruction, Colitis, and Endoscopy.

    Distinguished in Irritable Bowel Syndrome (IBS)

    David E. Reed
    Distinguished in Irritable Bowel Syndrome (IBS)

    David E. Reed
    Kingston, ON, CA 

    David Reed practices practicing medicine in Kingston, Canada. Mr. Reed is rated as a Distinguished expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Acute Pain, Viral Gastroenteritis, and Colitis.

    Distinguished in Irritable Bowel Syndrome (IBS)

    Elena F. Verdu
    Distinguished in Irritable Bowel Syndrome (IBS)

    Elena F. Verdu
    Hamilton, ON, CA 

    Elena Verdu practices practicing medicine in Hamilton, Canada. Ms. Verdu is rated as a Distinguished expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Celiac Disease, Malabsorption, Irritable Bowel Syndrome (IBS), Colitis, and Colonoscopy.

    Advanced in Irritable Bowel Syndrome (IBS)

    Nestor N. Vargas-Jimenez
    Advanced in Irritable Bowel Syndrome (IBS)

    Nestor N. Vargas-Jimenez
    Kingston, ON, CA 

    Nestor Vargas-Jimenez practices practicing medicine in Kingston, Canada. Mr. Vargas-Jimenez is rated as an Advanced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Acute Pain, Viral Gastroenteritis, and Colitis.

    Advanced in Irritable Bowel Syndrome (IBS)

    Alan E. Lomax
    Advanced in Irritable Bowel Syndrome (IBS)

    Alan E. Lomax
    76 Stuart Street, 
    Kingston, ON, CA 

    Alan Lomax practices practicing medicine in Kingston, Canada. Mr. Lomax is rated as an Advanced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Acute Pain, Irritable Bowel Syndrome (IBS), Viral Gastroenteritis, and Colitis.

    Advanced in Irritable Bowel Syndrome (IBS)

    Maria I. Sanchez-Pinto
    Advanced in Irritable Bowel Syndrome (IBS)

    Maria I. Sanchez-Pinto
    Hamilton, ON, CA 

    Maria Sanchez-Pinto practices practicing medicine in Hamilton, Canada. Ms. Sanchez-Pinto is rated as an Advanced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Celiac Disease, Malabsorption, Irritable Bowel Syndrome (IBS), Indigestion, and Endoscopy.

    Advanced in Irritable Bowel Syndrome (IBS)

    Gaston H. Rueda
    Advanced in Irritable Bowel Syndrome (IBS)

    Gaston H. Rueda
    Hamilton, ON, CA 

    Gaston Rueda practices practicing medicine in Hamilton, Canada. Mr. Rueda is rated as an Advanced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Celiac Disease, Malabsorption, Irritable Bowel Syndrome (IBS), and Viral Gastroenteritis.

    Advanced in Irritable Bowel Syndrome (IBS)

    David M. Rodrigues
    Advanced in Irritable Bowel Syndrome (IBS)

    David M. Rodrigues
    27 Kings College Circle, 
    Toronto, ON, CA 

    David Rodrigues practices practicing medicine in Toronto, Canada. Mr. Rodrigues is rated as an Advanced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Spontaneous Bacterial Peritonitis, Indigestion, Secondary Peritonitis, and Endoscopy.

    Advanced in Irritable Bowel Syndrome (IBS)

    Alberto F. Caminero
    Advanced in Irritable Bowel Syndrome (IBS)

    Alberto F. Caminero
    Hamilton, ON, CA 

    Alberto Caminero practices practicing medicine in Hamilton, Canada. Mr. Caminero is rated as an Advanced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Celiac Disease, Malabsorption, Irritable Bowel Syndrome (IBS), and Viral Gastroenteritis.

    Advanced in Irritable Bowel Syndrome (IBS)

    Cintya D. Lopez
    Advanced in Irritable Bowel Syndrome (IBS)

    Cintya D. Lopez
    Kingston, ON, CA 

    Cintya Lopez practices practicing medicine in Kingston, Canada. Ms. Lopez is rated as an Advanced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Irritable Bowel Syndrome (IBS), Acute Pain, Grass Allergy, and Colitis.

    Experienced in Irritable Bowel Syndrome (IBS)

    Michael G. Surette
    Experienced in Irritable Bowel Syndrome (IBS)

    Michael G. Surette
    Hamilton, ON, CA 

    Michael Surette practices practicing medicine in Hamilton, Canada. Mr. Surette is rated as an Experienced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Cystic Fibrosis, Pseudomonas Stutzeri Infections, Colitis, Generalized Anxiety Disorder (GAD), and Colonoscopy.

    Experienced in Irritable Bowel Syndrome (IBS)

    Philip M. Sherman
    Experienced in Irritable Bowel Syndrome (IBS)

    Philip M. Sherman
    Toronto, ON, CA 

    Philip Sherman practices practicing medicine in Toronto, Canada. Mr. Sherman is rated as an Experienced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Necrotizing Enterocolitis, Viral Gastroenteritis, Necrosis, and Vitamin D Deficiency.

    Experienced in Irritable Bowel Syndrome (IBS)

    John K. Marshall
    Experienced in Irritable Bowel Syndrome (IBS)

    John K. Marshall
    Hamilton, ON, CA 

    John Marshall practices practicing medicine in Hamilton, Canada. Mr. Marshall is rated as an Experienced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Viral Gastroenteritis, Hemorrhagic Proctocolitis, Crohn's Disease, Colonoscopy, and Endoscopy.

    Experienced in Irritable Bowel Syndrome (IBS)

    Carolina Bolino
    Experienced in Irritable Bowel Syndrome (IBS)

    Carolina Bolino
    Hamilton, ON, CA 

    Carolina Bolino practices practicing medicine in Hamilton, Canada. Ms. Bolino is rated as an Experienced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her clinical expertise encompasses Irritable Bowel Syndrome (IBS), Barrett Esophagus, Diarrhea, Endoscopy, and Colonoscopy.

    Experienced in Irritable Bowel Syndrome (IBS)

    Josue O. Polanco-Jaramillo
    Experienced in Irritable Bowel Syndrome (IBS)

    Josue O. Polanco-Jaramillo
    Kingston, ON, CA 

    Josue Polanco-Jaramillo practices practicing medicine in Kingston, Canada. Mr. Polanco-Jaramillo is rated as an Experienced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Acute Pain, Grass Allergy, and Colitis.

    Experienced in Irritable Bowel Syndrome (IBS)

    Melanie G. Gareau
    Experienced in Irritable Bowel Syndrome (IBS)

    Melanie G. Gareau
    555 University Ave, 
    Toronto, ON, CA 

    Melanie Gareau practices practicing medicine in Toronto, Canada. Ms. Gareau is rated as an Experienced expert by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her clinical expertise encompasses Angelman Syndrome, Colitis, Viral Gastroenteritis, and Irritable Bowel Syndrome (IBS).

    While we make every effort to provide the best results possible, data is currently limited outside of the United States. Doctors listed may include both clinicians and researchers, and individuals relocate frequently. We recommend contacting doctors directly to confirm their location and areas of focus. Contact information is provided when available. Learn more about our expert tiers.
    Showing 1-20 of 54

    Last Updated: 04/28/2026

    What is the definition of Irritable Bowel Syndrome (IBS)?

    Irritable bowel syndrome (IBS) is a disorder that leads to pain in abdomen and changes in bowel movements.

    IBS is not the same as inflammatory bowel disease (IBD).

    When should I see an Irritable Bowel Syndrome (IBS) doctor in Ontario, CA?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing an Irritable Bowel Syndrome (IBS) doctor in Ontario, CA?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How do I find the best Irritable Bowel Syndrome (IBS) doctor in Ontario, CA?

    You can find an Irritable Bowel Syndrome (IBS) doctor in any of the 10 largest U.S. cities by clicking below:

    Irritable Bowel Syndrome (IBS) doctor near New York, NY
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    Irritable Bowel Syndrome (IBS) doctor near Atlanta, GA
    Irritable Bowel Syndrome (IBS) doctor near Boston, MA
    Irritable Bowel Syndrome (IBS) doctor near Dallas, TX
    Irritable Bowel Syndrome (IBS) doctor near San Jose, CA

    How does MediFind rank Irritable Bowel Syndrome (IBS) doctors in Ontario, CA?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Irritable Bowel Syndrome (IBS) doctors in Ontario, CA?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with an Irritable Bowel Syndrome (IBS) doctor in Ontario, CA?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Irritable Bowel Syndrome (IBS) doctor search results page. 

    Why is it important to get a second opinion from a different Irritable Bowel Syndrome (IBS) doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with an Irritable Bowel Syndrome (IBS) doctor in Ontario, CA?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Irritable Bowel Syndrome (IBS) doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Irritable Bowel Syndrome (IBS) doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Irritable Bowel Syndrome (IBS) doctors in Ontario, CA?

    Look for the filter feature on the left side of the Irritable Bowel Syndrome (IBS) doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find an Irritable Bowel Syndrome (IBS) doctor that offers video calls?

    Look for the filter feature on the left-side of the Irritable Bowel Syndrome (IBS) doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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