The 20 Best Diarrhea Doctors Near Me in Rialto, CA

Find the Top Diarrhea Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 226 doctor with experience in Diarrhea near Rialto, CA. Of these, 216 are Experienced and 10 are Advanced.

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226 providers found
    George B. Saffouri
    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    San Bernardino Gastroenterology Associates

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

    George Saffouri is a Gastroenterologist in Rialto, California. Dr. Saffouri is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Hemorrhoids, Diverticular Disease, Chronic Erosive Gastritis, Endoscopy, and Colonoscopy. Dr. Saffouri is currently accepting new patients.

    Advanced in Diarrhea
    Pediatrics
    Advanced in Diarrhea
    Pediatrics

    Kaiser Permanente Fontana Medical Center

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

    Andrea Thorp is a Pediatrics provider in Fontana, California. Dr. Thorp is rated as an Advanced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Genetic Epilepsy with Febrile Seizures Plus (GEFS+), Diarrhea, Croup, Asthma in Children, and Gastrostomy.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Kaiser Permanente Fontana Medical Center

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

    Christiana Rajasingham is a Pediatrics provider in Fontana, California. Dr. Rajasingham is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Genetic Epilepsy with Febrile Seizures Plus (GEFS+), Asthma in Children, Diarrhea, and Croup.

    Learn about our expert tiers
    Experienced in Diarrhea
    Experienced in Diarrhea

    Kaiser Permanente Fontana Medical Center

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

    Mireille Farreau is a Pediatrics provider in Fontana, California. Dr. Farreau is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Scarlet Fever, Asthma in Children, Croup, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).

    Victor Guharoy
    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    San Bernardino Gastroenterology Associates, Inc.

    2006 N Riverside Ave, 
    Rialto, CA 
     (2.1 miles away)
    Experience:
    12+ years
    Languages Spoken:
    English

    Victor Guharoy is a Gastroenterologist in Rialto, California. Dr. Guharoy has been practicing medicine for over 12 years and is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gastrointestinal Bleeding, Hemorrhoids, Diverticular Disease, Acute Pancreatitis, and Gastrectomy.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Lasalle Medical Associates Rialto

    790 E Foothill Blvd, 
    Rialto, CA 
     (0.8 miles away)
    Languages Spoken:
    English

    Andrew Benin is a primary care provider, practicing in Family Medicine in Rialto, California. Dr. Benin is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Obesity in Children, Type 2 Diabetes (T2D), Food Allergy, and Obesity.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Rialto Pharmacy

    1851 N Riverside Ave, 
    Rialto, CA 
     (1.9 miles away)
    Languages Spoken:
    English

    Jocelyn Mcgrath is a Pediatrics provider in Rialto, California. Dr. Mcgrath is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Anemia, Obesity in Children, Developmental Dysphasia Familial, and Vascular Birthmark.

    Experienced in Diarrhea
    Pediatrics
    Experienced in Diarrhea
    Pediatrics

    Rialto Pharmacy

    1851 N Riverside Ave, 
    Rialto, CA 
     (1.9 miles away)
    Languages Spoken:
    English

    Olga Adan is a Pediatrics provider in Rialto, California. Dr. Adan is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Asthma in Children, Obesity in Children, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), and Autism Spectrum Disorder.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Arrowhead Regional Medical Center

    400 N Pepper Ave, 
    Colton, CA 
     (2.5 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English

    Farbod Farmand is a primary care provider, practicing in Nephrologist in Colton, California. Dr. Farmand has been practicing medicine for over 18 years and is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Sepsis, End-Stage Renal Disease (ESRD), Gastrointestinal Bleeding, Gastrostomy, and Endoscopy.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Arrowhead Regional Medical Center

    400 N Pepper Ave, 
    Colton, CA 
     (2.5 miles away)
    Languages Spoken:
    English
    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. Her top areas of expertise are Diabetic Retinopathy, Type 2 Diabetes (T2D), Gastroparesis, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Arrowhead Regional Medical Center

    400 N Pepper Ave, 
    Colton, CA 
     (2.5 miles away)
    Languages Spoken:
    English

    Timothy Yaopruke is a primary care provider, practicing in Internal Medicine in Colton, California. Dr. Yaopruke is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Sepsis, Maturity Onset Diabetes of the Young, Anemia, and Type 2 Diabetes (T2D).

    Experienced in Diarrhea
    Experienced in Diarrhea

    Lasalle Medical Associates

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

    Halima Shahabuddin is a Pediatrics provider in Fontana, California. Dr. Shahabuddin is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Obesity in Children, Viral Gastroenteritis, Delayed Growth, and Autism Spectrum Disorder.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Lasalle Medical Associates

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

    Cynthia Cheng is an Internal Medicine provider in Fontana, California. Dr. Cheng is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Obesity in Children, Delayed Growth, Idiopathic Short Stature (ISS), and Familial Short Stature (FSS).

    Experienced in Diarrhea
    Pediatrics
    Experienced in Diarrhea
    Pediatrics

    Lasalle Medical Associates 17TH St.

    1505 W 17th St, 
    San Bernardino, CA 
     (3.4 miles away)
    Languages Spoken:
    English

    Alwin Louie is a Pediatrics provider in San Bernardino, California. Dr. Louie is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Obesity in Children, Autism Spectrum Disorder, Delayed Growth, and Idiopathic Short Stature (ISS).

    Experienced in Diarrhea
    Experienced in Diarrhea

    Unicare Community Health Center Inc.

    308 N La Cadena Dr, 
    Colton, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Genesis Zamora is a Pediatrics provider in Colton, California. Dr. Zamora is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Obesity in Children, Anemia, Autism Spectrum Disorder, and Vascular Birthmark.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Joseph M Molina MD Professional Corporation-Southern California

    1181 N Mount Vernon Ave, 
    Colton, CA 
     (3.8 miles away)
    Languages Spoken:
    English

    Victor Salib is a primary care provider, practicing in Family Medicine in Colton, California. Dr. Salib is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Otitis, Parinaud Oculoglandular Syndrome, Lymphangitis, and Cellulitis.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Kaiser Permanente Fontana

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

    Catherine Lee is a Pediatrics provider in Fontana, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Obesity in Children, Asthma in Children, Autism Spectrum Disorder, and Viral Gastroenteritis.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Kaiser Foundation Hospital Home Health Agency

    17284 Slover Ave, 
    Fontana, CA 
     (4.4 miles away)
    Languages Spoken:
    English

    Marcelino Latina is a Pediatrics provider in Fontana, California. Dr. Latina is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Viral Gastroenteritis, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Croup, and Diarrhea.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Kaiser Permanente Fontana Medical Center

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

    Mitzi Loubriel is a primary care provider, practicing in Pediatrics in Fontana, California. Dr. Loubriel is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Otitis, Bronchitis, Asthma, and Roseola.

    Experienced in Diarrhea
    Pediatric Gastroenterology
    Experienced in Diarrhea
    Pediatric Gastroenterology

    Kaiser Permanente Fontana Medical Center

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

    Mun-wah Ng is a Pediatric Gastroenterologist in Fontana, California. Dr. Ng is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Cardiofaciocutaneous Syndrome, Fecal Impaction, RASopathies, and Encopresis.

    Showing 1-20 of 226

    Last Updated: 04/28/2026

    What is the definition of Diarrhea?

    Diarrhea is when you pass loose or watery stool.

    When should I see a Diarrhea doctor near Rialto, 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 Rialto, 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 Rialto, 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 Rialto, 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 Rialto, 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 Rialto, 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 Rialto, 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 

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