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

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

Last Updated: 09/26/2026

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MediFind found 102 doctor with experience in Irritable Bowel Syndrome (IBS) near glendora, CA. Of these, 86 are Experienced, 12 are Advanced and 4 are Distinguished.

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

    City Of Hope's Helford Clinical Research Hospital

    1500 Duarte Rd, 
    Duarte, CA 
     (6.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    James Lin is a Gastroenterologist practicing medicine in Duarte, California. Dr. Lin is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 58 other conditions, according to our data. His clinical expertise encompasses Bile Duct Stricture, Bile Duct Obstruction, Cholestasis, Colonoscopy, and Gastrectomy.

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

    Genesis Healthcare Partners

    522 W Foothill Blvd, 
    Glendora, CA 
     (0.5 miles away)
    Languages Spoken:
    English

    Samuel Mourani is a Gastroenterologist practicing medicine in Glendora, California. Dr. Mourani is rated as an Advanced 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 Familial Adenomatous Polyposis, Barrett Esophagus, Gastroesophageal Reflux Disease (GERD), Gastrostomy, and Hemorrhoidectomy. Dr. Mourani is board certified in American Board Of Internal Medicine.

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

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Patrick Truong is a Gastroenterologist practicing medicine in Glendora, California. Dr. Truong is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 61 other conditions, according to our data. His clinical expertise encompasses Swallowing Difficulty, Painful Swallowing, Gastrointestinal Bleeding, Gastrectomy, and Gastrostomy. Dr. Truong is board certified in American Board Of Internal Medicine.

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

    Office

    1343 E Gladstone St Ste 100, 
    Glendora, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Yen Lai is a primary care provider, practicing in Family Medicine in Glendora, California. Dr. Lai is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Aromatase Deficiency, Renal Hypomagnesemia Type 2, Methylmalonic Acidemia with Homocystinuria, and Homocystinuria.

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

    Citrus Valley Gastroenterology A California Medical Corporation

    500 W San Bernardino Rd, 
    Covina, CA 
     (3.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ankush Sharma is a Gastroenterologist practicing medicine in Covina, California. Dr. Sharma is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 63 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Swallowing Difficulty, Painful Swallowing, Colonoscopy, and Gastrectomy. Dr. Sharma is board certified in American Board Of Internal Medicine.

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

    Citrus Valley Gastroenterology A California Medical Corporation

    500 W San Bernardino Rd, 
    Covina, CA 
     (3.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Adam Snyder is a Gastroenterologist practicing medicine in Covina, California. Dr. Snyder is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 63 other conditions, according to our data. His clinical expertise encompasses Painful Swallowing, Swallowing Difficulty, Visceromegaly, Gastrostomy, and Gastrectomy. Dr. Snyder is board certified in American Board Of Internal Medicine.

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

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Languages Spoken:
    English

    George Ferenczi is a Gastroenterologist practicing medicine in Glendora, California. Dr. Ferenczi is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Hemorrhoids, Diverticular Disease, Colonoscopy, and Gastrectomy. Dr. Ferenczi is board certified in American Board Of Internal Medicine.

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

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Osama Sidhom is a Gastroenterologist practicing medicine in Glendora, California. Dr. Sidhom is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 55 other conditions, according to our data. His clinical expertise encompasses Painful Swallowing, Swallowing Difficulty, Gastrointestinal Bleeding, Gastrostomy, and Gastrectomy. Dr. Sidhom is board certified in American Board Of Internal Medicine.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine | General Practice
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine | General Practice

    Greg K. Tomassian, MD

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Krekor Tomassian is a primary care provider, practicing in Family Medicine and General Practice in Glendora, California. Dr. Tomassian is rated as an Experienced provider 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 Maturity Onset Diabetes of the Young, High Cholesterol, Type 2 Diabetes (T2D), and Gardner-Diamond Syndrome.

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

    Office

    130 W Alosta Ave # 208, 
    Glendora, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Ruth Hamad is a primary care provider, practicing in Internal Medicine in Glendora, California. Dr. Hamad is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her clinical expertise encompasses Irritable Bowel Syndrome (IBS), Vertigo, Postmenopausal Osteoporosis, and Osteoporosis.

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

    Citrus Valley Gastroenterology A California Medical Corporation

    500 W San Bernardino Rd, 
    Covina, CA 
     (3.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sartaj Arora is a Gastroenterologist practicing medicine in Covina, California. Dr. Arora is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 66 other conditions, according to our data. His clinical expertise encompasses Painful Swallowing, Swallowing Difficulty, Gastrointestinal Bleeding, Gastrectomy, and Gastrostomy. Dr. Arora is board certified in American Board Of Internal Medicine.

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

    Dagher MD Medical Group, Inc.

    376 W Badillo St, 
    Covina, CA 
     (3.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Nadim Dagher is a primary care provider, practicing in Internal Medicine in Covina, California. Dr. Dagher is rated as an Experienced provider 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 Osteomyelitis in Children, Axillary Nerve Dysfunction, Erectile Dysfunction (ED), and Persistent Genital Arousal Disorder. Dr. Dagher is board certified in American Board Of Internal Medicine.

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

    Emanate Health Medical Group

    1125 Via Verde, 
    San Dimas, CA 
     (4.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Heather Mcdonald is a primary care provider, practicing in Family Medicine in San Dimas, California. Dr. Mcdonald is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her clinical expertise encompasses Brachial Plexopathy, Thoracic Outlet Syndrome, Pelvic Floor Dysfunction, and Costochondritis. Dr. Mcdonald is board certified in American Board Of Family Medicine.

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

    Office

    2333 Foothill Blvd Ste B, 
    La Verne, CA 
     (6.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Claudia Lopez is a primary care provider, practicing in Family Medicine in La Verne, California. Dr. Lopez is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Obesity in Children, High Cholesterol, Vaginal Cysts, Vaginal Dryness, and Intrauterine Device Insertion. Dr. Lopez is currently accepting new patients.

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

    Office

    2333 Foothill Blvd Ste B, 
    La Verne, CA 
     (6.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Justin Pegueros is a primary care provider, practicing in Family Medicine in La Verne, California. Dr. Pegueros is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Sutton Disease 2, Aphthous Stomatitis, Acrospiroma, and Sinusitis. Dr. Pegueros is currently accepting new patients.

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

    Duarte Cancer Center

    1500 Duarte Rd, 
    Duarte, CA 
     (6.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Andreas Kaiser is a Colorectal Surgeon practicing medicine in Duarte, California. Dr. Kaiser is rated as an Experienced provider 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 Colorectal Cancer, Familial Colorectal Cancer, Bowel Incontinence, Colostomy, and Hernia Surgery. Dr. Kaiser is currently accepting new patients.

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

    Pomona Valley Health Centers At La Verne

    2333 Foothill Blvd, 
    La Verne, CA 
     (6.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michael Deanda is a primary care provider, practicing in Family Medicine in La Verne, California. Dr. Deanda is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Sitosterolemia, Type 2 Diabetes (T2D), High Cholesterol, and Obesity in Children. Dr. Deanda is currently accepting new patients.

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

    Mallu C. Reddy M.D., Inc

    1196 N Park Ave, 
    Pomona, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Mallu Reddy is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Reddy 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 Type 2 Diabetes (T2D), Hypertension, Familial Hypertension, Endoscopy, and Gastrostomy. Dr. Reddy is board certified in American Board Of Internal Medicine. Dr. Reddy is currently accepting new patients.

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

    Chaparral Medical Group Inc.

    790 E Bonita Ave, 
    Pomona, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Nallely Flores-Lazcano is a primary care provider, practicing in Family Medicine in Pomona, California. Dr. Flores-Lazcano is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Obesity, Hepatic Cystic Hamartoma, Caroli Disease, and Sciatica. Dr. Flores-Lazcano is currently accepting new patients.

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

    Chaparral Medical Group Inc.

    790 E Bonita Ave, 
    Pomona, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Uzma Waraich is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Waraich is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Obesity, Obesity in Children, High Cholesterol, and Type 2 Diabetes (T2D). Dr. Waraich is currently accepting new patients.

    Showing 1-20 of 102

    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 glendora, 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 glendora, 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 glendora, 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 glendora, 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 glendora, 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 glendora, 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 glendora, 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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