The 20 Best Diarrhea Doctors Near Me in fontana, CA

Find the Top Diarrhea Experts and Specialists

Last Updated: 09/26/2026

Save doctors for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Already have a doctor?
Find A Second Opinion

MediFind found 270 doctor with experience in Diarrhea near fontana, CA. Of these, 256 are Experienced, 12 are Advanced and 2 are Distinguished.

Location
LocationClose
270 providers found
    Experienced in Diarrhea
    Experienced in Diarrhea

    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 Diarrhea. 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 Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    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 Diarrhea. 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.

    Advanced in Diarrhea
    Advanced in Diarrhea
    Referral may be required

    Kaiser Permanente Fontana Medical Center

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

    Andrea Thorp is a Pediatrics provider practicing medicine in Fontana, California. Dr. Thorp is rated as an Advanced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Genetic Epilepsy with Febrile Seizures Plus (GEFS+), Diarrhea, Croup, Asthma in Children, and Gastrostomy. Dr. Thorp is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required

    San Bernardino Gastroenterology Associates

    2006 N Riverside Ave, Ste B, 
    Rialto, CA 
     (4.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    George Saffouri is a Gastroenterologist practicing medicine in Rialto, California. Dr. Saffouri is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Diverticular Disease, Chronic Erosive Gastritis, Endoscopy, and Colonoscopy. Dr. Saffouri is board certified in Internal Medicine (Sub: Gastroenterology) and Internal Medicine. Dr. Saffouri is currently accepting new patients.

    Experienced in Diarrhea
    Experienced in Diarrhea

    San Bernardino Gastroenterology Associates

    2006 N Riverside Ave, Ste B, 
    Rialto, CA 
     (4.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Kumaravelu Balasubramaniam is a primary care provider, practicing in Internal Medicine in Rialto, California. Dr. Balasubramaniam is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Menetrier Disease, Chronic Erosive Gastritis, Painful Swallowing, Endoscopy, and Gastrostomy. Dr. Balasubramaniam is board certified in American Board Of Internal Medicine. Dr. Balasubramaniam is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required

    San Bernardino Gastroenterology Associates

    2006 N Riverside Ave, Ste B, 
    Rialto, CA 
     (4.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Victor Guharoy is a Gastroenterologist practicing medicine in Rialto, California. Dr. Guharoy is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Hemorrhoids, Diverticular Disease, Acute Pancreatitis, and Gastrectomy. Dr. Guharoy is board certified in American Board Of Internal Medicine and Internal Medicine. Dr. Guharoy is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required

    Inland Empire Liver Foundation

    2006 N Riverside Ave, Ste A, 
    Rialto, CA 
     (4.8 miles away)
    Languages Spoken:
    English, Arabic, Spanish
    Accepting New Patients

    Zeid Kayali is a Gastroenterologist practicing medicine in Rialto, California. Dr. Kayali is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Nonalcoholic Steatohepatitis (NASH), Hepatitis, Hepatitis C, Gastrostomy, and Endoscopy. Dr. Kayali is board certified in American Board Of Internal Medicine, Internal Medicine (Sub: Transplant Hepatology), Internal Medicine (Sub: Gastroenterology), and Internal Medicine. Dr. Kayali is currently accepting new patients.

    Advanced in Diarrhea
    Family Medicine
    Advanced in Diarrhea
    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 Diarrhea. 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 Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Lasalle Medical Associates

    17577 Arrow Blvd, 
    Fontana, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Cheryl Emoto is a Pediatrics provider practicing medicine in Fontana, California. Dr. Emoto is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Obesity in Children, Autism Spectrum Disorder, Delayed Growth, and Familial Short Stature (FSS).

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Lasalle Medical Associates

    17577 Arrow Blvd, 
    Fontana, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Halima Shahabuddin is a Pediatrics provider practicing medicine in Fontana, California. Dr. Shahabuddin is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Obesity in Children, Viral Gastroenteritis, Delayed Growth, and Autism Spectrum Disorder.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Kaiser Permanente Fontana

    9985 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Catherine Lee is a Pediatrics provider practicing medicine in Fontana, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Obesity in Children, Asthma in Children, Autism Spectrum Disorder, and Viral Gastroenteritis.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Kaiser Permanente Fontana Medical Center

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

    Christiana Rajasingham is a Pediatrics provider practicing medicine in Fontana, California. Dr. Rajasingham is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Genetic Epilepsy with Febrile Seizures Plus (GEFS+), Asthma in Children, Diarrhea, and Croup. Dr. Rajasingham is currently accepting new patients.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Kaiser Permanente Fontana Medical Center

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

    Stacey Ernest is a Pediatrics provider practicing medicine in Fontana, California. Dr. Ernest is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Diarrhea, Croup, Genetic Epilepsy with Febrile Seizures Plus (GEFS+), and Herpangina. Dr. Ernest is currently accepting new patients.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Kaiser Permanente Fontana Medical Center

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

    Mitzi Loubriel is a Pediatrics provider practicing medicine in Fontana, California. Dr. Loubriel is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Roseola, Viral Gastroenteritis, Asthma in Children, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).

    Experienced in Diarrhea
    Pediatric Gastroenterology
    Experienced in Diarrhea
    Pediatric Gastroenterology
    Referral may be required

    Kaiser Permanente Fontana Medical Center

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

    Mun-wah Ng is a Pediatric Gastroenterologist practicing medicine in Fontana, California. Dr. Ng is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Cardiofaciocutaneous Syndrome, Fecal Impaction, RASopathies, and Encopresis.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Kaiser Permanente Fontana Medical Center

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

    Peter Choi is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Choi is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Parinaud Oculoglandular Syndrome, Asthma, Asthma in Children, and Trichohepatoenteric Syndrome.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Southern California Permanente Medical Group

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

    Michelle Ko is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Ko is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Asthma, Asthma in Children, Parinaud Oculoglandular Syndrome, and Grass Allergy.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Kaiser Permanente Fontana Medical Center

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

    James Killeen-Iii is a Pediatrics provider practicing medicine in Fontana, California. Dr. Killeen-Iii is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Obesity in Children, Asthma in Children, Croup, and Viral Gastroenteritis.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Fontana Medical Center

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

    Richard Leon is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Leon is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Lymphangitis, Parinaud Oculoglandular Syndrome, Opisthotonos, and Muscle Spasms. Dr. Leon is currently accepting new patients.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Kaiser Permanente Fontana Medical Center

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

    Mireille Farreau is a Pediatrics provider practicing medicine in Fontana, California. Dr. Farreau is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Scarlet Fever, Asthma in Children, Croup, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP). Dr. Farreau is currently accepting new patients.

    Showing 1-20 of 270

    Last Updated: 09/26/2026

    What is the definition of Diarrhea?

    Diarrhea is when you pass loose or watery stool.

    When should I see a Diarrhea 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 a Diarrhea 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 Diarrhea 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 Diarrhea 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 a Diarrhea 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 Diarrhea doctor search results page. 

    Why is it important to get a second opinion from a different Diarrhea 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 a Diarrhea 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 Diarrhea 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 Diarrhea 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 Diarrhea doctors near fontana, CA?

    Look for the filter feature on the left side of the Diarrhea 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 a Diarrhea doctor that offers video calls?

    Look for the filter feature on the left-side of the Diarrhea 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 

    Read more about our Content Policy. 

    More Diarrhea Doctors by city