The 20 Best Diarrhea Doctors Near Me in Highland, CA

Find the Top Diarrhea Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 148 doctor with experience in Diarrhea near Highland, CA. Of these, 143 are Experienced and 5 are Advanced.

Location
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148 providers found
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Unilab Corporation

    7000 Boulder Ave, 
    Highland, CA 
     (0.5 miles away)
    Languages Spoken:
    English

    Hin Lee is a Gastroenterologist in Highland, California. Dr. Lee is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Endoscopy, and Gastrostomy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Javed N. Sadiq MD Inc

    26021 Business Center Dr, 
    Redlands, CA 
     (4.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Javed Sadiq is a Gastroenterologist in Redlands, California. Dr. Sadiq is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Familial Adenomatous Polyposis, Gas Bloat Syndrome, Gastritis, Endoscopy, and Gastrostomy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    J. Robert Evans, M.D., P.C.

    355 E 21st St, 
    San Bernardino, CA 
     (4.5 miles away)
    Experience:
    48+ years
    Languages Spoken:
    English

    J Evans is a Gastroenterologist in San Bernardino, California. Dr. Evans has been practicing medicine for over 48 years and is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Hemorrhoids, Gardner Syndrome, Swallowing Difficulty, Painful Swallowing, and Gastrostomy.

    Learn about our expert tiers
    George B. Saffouri
    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    San Bernardino Gastroenterology Associates

    2006 N Riverside Ave, Ste B, 
    Rialto, CA 
     (9.7 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.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Optum - Highland Boulder

    7000 Boulder Ave, 
    Highland, CA 
     (0.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Hung Nguyen is a primary care provider, practicing in Family Medicine in Highland, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Infant Hyperglycemia, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Optum - Highland Boulder

    7000 Boulder Ave, 
    Highland, CA 
     (0.5 miles away)
    Languages Spoken:
    English

    Philip Lee is a primary care provider, practicing in Family Medicine in Highland, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gardner-Diamond Syndrome, Purpura, Autoerythrocyte Sensitivity, and Type 2 Diabetes (T2D).

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Optum - Highland Boulder

    7000 Boulder Ave, 
    Highland, CA 
     (0.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Yi Liu is a primary care provider, practicing in Family Medicine in Highland, California. Dr. Liu is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Togaviridae Disease, Viral Pharyngitis, Cellulitis, and Bronchitis.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Unilab Corporation

    7000 Boulder Ave, 
    Highland, CA 
     (0.5 miles away)
    Languages Spoken:
    English

    Marian Beshara is a primary care provider, practicing in Internal Medicine in Highland, California. Dr. Beshara is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Infant Hyperglycemia, Vitamin D Deficiency, Type 2 Diabetes (T2D), and High Cholesterol.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Scpmg Laboratory-Redlands

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Usanee Sanders is a Pediatrics provider in Redlands, California. Dr. Sanders is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Obesity in Children, Autism Spectrum Disorder, Asthma in Children, and Zoon Vulvitis.

    Experienced in Diarrhea
    Pediatrics
    Experienced in Diarrhea
    Pediatrics

    Scpmg Laboratory-Redlands

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

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

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Redlands Medical Offices

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    John Samples is a primary care provider, practicing in Internal Medicine in Redlands, California. Dr. Samples is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Lung Cancer, High Cholesterol, Headache, and Anemia.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Scpmg Laboratory-Redlands

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Teri Boon is a primary care provider, practicing in Family Medicine in Redlands, California. Dr. Boon is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Bronchitis, Vulvovaginitis, Acne, and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Kaiser Permanente Redlands Medical Offices

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Joshua Imperio is a primary care provider, practicing in Internal Medicine in Redlands, California. Dr. Imperio is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Autoimmune Hepatitis, Hepatitis, Lung Metastases, and High Cholesterol.

    Experienced in Diarrhea
    Family Medicine | Internal Medicine
    Experienced in Diarrhea
    Family Medicine | Internal Medicine

    Redlands Medical Offices

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Joumana Toumeh is a primary care provider, practicing in Internal Medicine and Family Medicine in Redlands, California. Dr. Toumeh is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are High Cholesterol, Type 2 Diabetes (T2D), Familial Hypertension, and Hypertension.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Scpmg Laboratory-Redlands

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Javier Sanchez is a primary care provider, practicing in Family Medicine in Redlands, California. Dr. Sanchez is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Streptococcal Group B Infection, Breast Infection, Acrospiroma, and Strep Throat.

    Experienced in Diarrhea
    Pediatrics
    Experienced in Diarrhea
    Pediatrics

    Scpmg Laboratory-Redlands

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Loan Lu is a Pediatrics provider in Redlands, California. Dr. Lu 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 Diarrhea.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Redlands Medical Offices

    1301 California St, 
    Redlands, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Sunnyline Vendiola is a primary care provider, practicing in Family Medicine in Redlands, California. Dr. Vendiola is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Bronchitis, Vertigo, Chronic Cough, and Vulvovaginitis.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Inland Empire Pain Management

    754 E Highland Ave, 
    San Bernardino, CA 
     (4.1 miles away)
    Languages Spoken:
    English

    Donald Underwood is a primary care provider, practicing in Family Medicine in San Bernardino, California. Dr. Underwood is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Obesity in Children, Food Allergy, Kerion Celsi, and Vitamin D Deficiency.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Optum - Redlands Citrus

    1600 E Citrus Ave Ste A, 
    Redlands, CA 
     (4.1 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Nancy Lin is a primary care provider, practicing in Internal Medicine in Redlands, California. Dr. Lin has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Osteomyelitis in Children, High Cholesterol, Familial Combined Hyperlipidemia, and Xanthoma.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Office

    1910 Orange Tree Ln Ste 344, 
    Redlands, CA 
     (4.1 miles away)
    Languages Spoken:
    English

    Grace Hecker is a primary care provider, practicing in Family Medicine in Redlands, California. Dr. Hecker is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Multiple Carboxylase Deficiency, Folate Deficiency, Vitamin B12 Deficiency Anemia, and Subacute Combined Degeneration.

    Showing 1-20 of 148

    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 Highland, 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 Highland, 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 Highland, 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 Highland, 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 Highland, 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 Highland, 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 Highland, 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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