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

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

Last Updated: 09/26/2026

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MediFind found 117 doctor with experience in Irritable Bowel Syndrome (IBS) near Fontana, CA. Of these, 110 are Experienced, 4 are Advanced and 3 are Distinguished.

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117 providers found
    Experienced in Irritable Bowel Syndrome (IBS)
    Experienced in Irritable Bowel Syndrome (IBS)

    Optum - Rialto

    1851 N Riverside Ave, 
    Rialto, CA 
     (4.7 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Camille De S Chano is a primary care provider, practicing in Family Medicine in Rialto, California. She has been practicing medicine for over 17 years. Dr. De S Chano is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Obesity, Osteomyelitis in Children, Type 2 Diabetes (T2D), and Obesity in Children. Dr. De S Chano is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Experienced in Irritable Bowel Syndrome (IBS)

    Cucamonga Valley Medical Group, Inc.

    16465 Sierra Lakes Pkwy, 
    Fontana, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Kimberly Bekemeier is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Bekemeier is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 28 other conditions, according to our data. Her clinical expertise encompasses Obesity, Obesity in Children, Cirrhosis, and High Cholesterol. Dr. Bekemeier is board certified in American Board Of Family Medicine. Dr. Bekemeier is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine

    Arrowhead Regional Medical Center

    400 N Pepper Ave, 
    Colton, CA 
     (5.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Tam Huynh is a primary care provider, practicing in Internal Medicine in Colton, California. Dr. Huynh is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 15 other conditions, according to our data. Her clinical expertise encompasses Diabetic Retinopathy, Type 2 Diabetes (T2D), Gastroparesis, and Glucocorticoid-Remediable Aldosteronism. Dr. Huynh is currently accepting new patients.

    Learn about our expert tiers
    Advanced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Advanced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Ravinder Singh, Md, Inc.

    8231 Rochester Ave, 
    Rancho Cucamonga, CA 
     (6.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ravinder Singh is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Singh is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 121 other conditions, according to our data. His clinical expertise encompasses Hypercalcemia, Milk-Alkali Syndrome, Type 2 Diabetes (T2D), Hormone Replacement Therapy (HRT), and Parathyroidectomy. Dr. Singh is board certified in American Board Of Family Medicine. Dr. Singh is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Referral may be required

    Fontana Medical Center

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Blanca Viramontes is a Gastroenterologist practicing medicine in Fontana, California. Dr. Viramontes is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her clinical expertise encompasses Hemorrhoids, Diverticular Disease, Banti's Syndrome, Esophageal Varices, and Endoscopy.

    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Referral may be required

    Fontana Medical Center

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Alexander Han is a Gastroenterologist practicing medicine in Fontana, California. Dr. Han is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Esophageal Varices, Hemorrhoids, Banti's Syndrome, Mallory-Weiss Syndrome, and Endoscopy. Dr. Han is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine

    Southern California Permanente Medical Group

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Angeline Liu is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Liu is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her clinical expertise encompasses Irritable Bowel Syndrome (IBS).

    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Referral may be required

    Fontana Medical Center

    9961 Sierra Avenue, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Timothy Kuo is a Gastroenterologist practicing medicine in Fontana, California. Dr. Kuo is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Bile Acid Malabsorption, Hemorrhoids, Visceromegaly, Alcoholic Cirrhosis, and Endoscopy. Dr. Kuo is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Referral may be required

    Fontana Medical Center

    9961 Sierra Avenue, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Robert Kung is a Gastroenterologist practicing medicine in Fontana, California. Dr. Kung is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Gastritis, Esophageal Varices, Alcoholic Cirrhosis, Hemorrhoids, and Endoscopy. Dr. Kung is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine

    Radiology/Diagnostic Imaging At Rancho Cucamonga Medical Offices

    10850 Arrow Rte, 
    Rancho Cucamonga, CA 
     (7.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Rishu Marwaha is a primary care provider, practicing in Internal Medicine in Rancho Cucamonga, California. Dr. Marwaha is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Obesity, Axillary Nerve Dysfunction, Obesity in Children, and High Cholesterol. Dr. Marwaha is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Fagan, John A. Family Practice, Inc.

    10787 Laurel St, 
    Rancho Cucamonga, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    John Fagan is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Fagan is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 45 other conditions, according to our data. His clinical expertise encompasses Ehlers-Danlos Syndrome (EDS), Hypertension, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Fagan is board certified in American Board Of Family Medicine. Dr. Fagan is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Optum - Colton Cooley

    1300 E Cooley Dr, 
    Colton, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Kelvin Ma is a primary care provider, practicing in Family Medicine in Colton, California. Dr. Ma is rated as an Experienced provider 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 Osteomyelitis in Children, Type 2 Diabetes (T2D), Obesity, and Sciatica. Dr. Ma is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Optum - Colton Cooley

    1300 E Cooley Dr, 
    Colton, CA 
     (7.8 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Amandip Birdi is a primary care provider, practicing in Family Medicine in Colton, California. She has been practicing medicine for over 10 years. Dr. Birdi is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her clinical expertise encompasses Cirrhosis, Familial Combined Hyperlipidemia, Xanthoma, and Osteomyelitis in Children. Dr. Birdi is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Aureus Medical Group, Inc.

    7974 Haven Ave, 
    Rancho Cucamonga, CA 
     (8.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Steven Barag is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Barag is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Vitamin D Deficiency, Sciatica, Eunuchoidism Familial Hypogonadotropic, and Male Pseudohermaphroditism with Gynecomastia. Dr. Barag is board certified in American Osteopathic Board Of Family Practice. Dr. Barag is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    9190 Haven Ave

    9190 Haven Ave Ste 102, 
    Rancho Cucamonga, CA 
     (8.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Ani Berberyan is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Berberyan is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 11 other conditions, according to our data. Her clinical expertise encompasses Obesity, Axillary Nerve Dysfunction, Sciatica, and High Cholesterol. Dr. Berberyan is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Cucamonga Valley Medical Group

    7777 Milliken Ave Ste 240, 
    Rancho Cucamonga, CA 
     (8.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Eric Bekemeier is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Bekemeier is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Obesity, Cirrhosis, Familial Combined Hyperlipidemia, and Xanthoma. Dr. Bekemeier is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Optum - San Bernardino Medical Group

    1700 N Waterman Ave, 
    San Bernardino, CA 
     (9.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Nesib Ali is a primary care provider, practicing in Family Medicine in San Bernardino, California. Dr. Ali is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 31 other conditions, according to our data. His clinical expertise encompasses Osteomyelitis in Children, Type 2 Diabetes (T2D), High Cholesterol, and Cirrhosis. Dr. Ali is board certified in American Board Of Family Medicine. Dr. Ali is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    San Bernardino Medical Group, Inc

    1700 N Waterman Ave, 
    San Bernardino, CA 
     (9.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Faith Lee is a primary care provider, practicing in Family Medicine in San Bernardino, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Type 2 Diabetes (T2D), Osteomyelitis in Children, High Cholesterol, and Diabetic Neuropathy. Dr. Lee is board certified in Family Medicine and American Board Of Family Medicine. Dr. Lee is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Behavior Matters

    3634 Elizabeth St, 
    Riverside, CA 
     (9.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Vicente Vazquez is a primary care provider, practicing in Family Medicine in Riverside, California. Dr. Vazquez is rated as an Experienced provider 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 Insomnia, Obesity, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension. Dr. Vazquez is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Internal Medicine

    Riverside Medical Clinic Inc.

    6405 Day St, 
    Riverside, CA 
     (14.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ennis Zaitoon is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Zaitoon is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Sitosterolemia, Obesity in Children, Obesity, and High Cholesterol.

    Showing 1-20 of 117

    Last Updated: 09/26/2026

    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 near Fontana, 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 near Fontana, 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 does MediFind rank Irritable Bowel Syndrome (IBS) doctors near Fontana, 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 near Fontana, 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 near Fontana, 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 near Fontana, 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 near Fontana, 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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