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

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

Last Updated: 09/26/2026

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MediFind found 141 doctor with experience in Irritable Bowel Syndrome (IBS) near diamond bar, CA. Of these, 124 are Experienced, 13 are Advanced and 4 are Distinguished.

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141 providers found
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    22716 Mountain Laurel Way, 
    Diamond Bar, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Yuan Liu is a primary care provider, practicing in Family Medicine in Diamond Bar, California. Dr. Liu is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 117 other conditions, according to our data. Her clinical expertise encompasses Lung Adenocarcinoma, Arthritis, Lung Cancer, Tissue Biopsy, and Endoscopy. Dr. Liu is currently accepting new patients.

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

    Office

    3110 Chino Ave Ste 150A, 
    Chino Hills, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ryan Agena is a primary care provider, practicing in Family Medicine in Chino Hills, California. Dr. Agena is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses High Cholesterol, Hypertension, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Agena is currently accepting new patients.

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

    Premier Family Medicine Associates Inc

    2140 Grand Ave Ste 125, 
    Chino Hills, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Erik Olsen is a primary care provider, practicing in Family Medicine in Chino Hills, California. Dr. Olsen 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 Sepsis, High Cholesterol, Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, and Pacemaker Implantation. Dr. Olsen is currently accepting new patients.

    Learn about our expert tiers
    Distinguished in Irritable Bowel Syndrome (IBS)
    Internal Medicine
    Distinguished in Irritable Bowel Syndrome (IBS)
    Internal Medicine

    Office

    5475 Walnut Ave Ste H, 
    Chino, CA 
     (7.3 miles away)
    Languages Spoken:
    English

    Sudhir Reddy is a primary care provider, practicing in Internal Medicine in Chino, California. Dr. Reddy is rated as a Distinguished provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 34 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Anemia, Gastrostomy, and Endoscopy.

    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine
    253 South Diamond Bar Boulevard, 
    Diamond Bar, CA 
     (1.2 miles away)
    Languages Spoken:
    English

    Douglas Starr is a primary care provider, practicing in Family Medicine in Diamond Bar, California. Dr. Starr 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 Hypertensive Heart Disease, Enlarged Liver, High Cholesterol, and Type 2 Diabetes (T2D).

    Experienced in Irritable Bowel Syndrome (IBS)
    Pediatrics | Internal Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Pediatrics | Internal Medicine
    Referral may be required
    2707 South Diamond Bar Boulevard, Suite 104, 
    Diamond Bar, CA 
     (1.2 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jonathan Ou is a primary care provider, practicing in Pediatrics and Internal Medicine in Diamond Bar, California. He has been practicing medicine for over 17 years. Dr. Ou is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Osteomyelitis in Children, High Cholesterol, Febrile Neutropenia, and Vitamin D Deficiency. Dr. Ou is currently accepting new patients.

    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Experienced in Irritable Bowel Syndrome (IBS)
    Gastroenterology
    Referral may be required
    15855 Pomona Rincon Road, 
    Chino Hills, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Vijay Prabhakar is a Gastroenterologist practicing medicine in Chino Hills, California. Dr. Prabhakar is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Hemorrhoids, Familial Adenomatous Polyposis, Diverticular Disease, and Intestinal Cancer. Dr. Prabhakar 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 
     (5.8 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)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    MDVIP - Brea, CA

    3000 E Birch St Ste 107, 
    Brea, CA 
     (6.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    John Mitchell is a primary care provider, practicing in Family Medicine in Brea, California. Dr. Mitchell is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His clinical expertise encompasses Menopause, Familial Combined Hyperlipidemia, Cirrhosis, and Xanthoma. Dr. Mitchell is currently accepting new patients.

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

    Chino Medical Group Inc

    5475 Walnut Ave, 
    Chino, CA 
     (7.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Venkata Pulakanti is a primary care provider, practicing in Internal Medicine in Chino, California. Dr. Pulakanti 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 Obesity, Obesity in Children, Type 2 Diabetes (T2D), and Familial Hypertension. Dr. Pulakanti 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, Inc.

    5562 Philadelphia St, 
    Chino, CA 
     (7.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jesse Minguez is a primary care provider, practicing in Family Medicine in Chino, California. Dr. Minguez is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 49 other conditions, according to our data. His clinical expertise encompasses Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and Alcoholic Neuropathy. Dr. Minguez is board certified in American Board Of Family Medicine. Dr. Minguez is currently accepting new patients.

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

    Caduceus Medical Group

    18200 Yorba Linda Blvd Ste 104, 
    Yorba Linda, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Essam Quraishi is a Gastroenterologist practicing medicine in Yorba Linda, California. Dr. Quraishi is rated as an Advanced 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 Chronic Erosive Gastritis, Gastritis, Nonalcoholic Steatohepatitis (NASH), Gastrectomy, and Gastrostomy.

    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.

    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 
     (8.3 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)
    Family Medicine
    Experienced in Irritable Bowel Syndrome (IBS)
    Family Medicine

    Pilgrim Place Health Services Center

    721 Harrison Ave, 
    Claremont, CA 
     (8.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    James Meyers is a primary care provider, practicing in Family Medicine in Claremont, California. Dr. Meyers is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Obesity, Sepsis, Familial Hypertension, and Endoscopy. Dr. Meyers is currently accepting new patients.

    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 
     (12.8 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

    Our Family Medical Group

    1866 N Orange Grove Ave Ste 104, 
    Pomona, CA 
     (7.1 miles away)
    Languages Spoken:
    English

    Nischita Merla is a Gastroenterologist practicing medicine in Pomona, California. Dr. Merla is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). She is also highly rated in 36 other conditions, according to our data. Her clinical expertise encompasses Attenuated Familial Adenomatous Polyposis, Cronkhite-Canada Disease, Juvenile Polyposis Syndrome, Endoscopy, and Gastrostomy.

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

    Platinum Digestive Health

    250 W Bonita Ave, 
    Pomona, CA 
     (7.4 miles away)
    Languages Spoken:
    English

    Bhaveshkumar Patel is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Patel is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 67 other conditions, according to our data. His clinical expertise encompasses Painful Swallowing, Swallowing Difficulty, Bile Duct Obstruction, Endoscopy, and Gastrostomy. Dr. Patel 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

    Caduceus Physicians Medical Group

    18200 Yorba Linda Blvd, 
    Yorba Linda, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Brian Riff is a Gastroenterologist practicing medicine in Yorba Linda, California. Dr. Riff is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). He is also highly rated in 30 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Chronic Erosive Gastritis, Campylobacter Infection, Gastrostomy, and Gastrectomy. Dr. Riff is board certified in American Board Of Internal Medicine.

    Showing 1-20 of 141

    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 diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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 diamond bar, 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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