The 20 Best Diarrhea Doctors Near Me in Rancho Santa Margarita, CA

Find the Top Diarrhea Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 156 doctor with experience in Diarrhea near Rancho Santa Margarita, CA. Of these, 141 are Experienced, 13 are Advanced and 2 are Distinguished.

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156 providers found
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Douglas Nguyen is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Nguyen is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Ulcerative Colitis, Colitis, Crohn's Disease, Endoscopy, and Colonoscopy. Dr. Nguyen is currently accepting new patients.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jack Feng is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Feng is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Diverticular Disease, Gardner Syndrome, and Turcot Syndrome. Dr. Feng is currently accepting new patients.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Edward Block is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Block is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Gastroesophageal Reflux Disease (GERD), Diverticular Disease, and Chronic Erosive Gastritis.

    Learn about our expert tiers
    Experienced in Diarrhea
    Experienced in Diarrhea
    Rancho Santa Margarita, CA 
     (1.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Rosette Yson is a Pediatrics provider practicing medicine in Rancho Santa Margarita, California. Dr. Yson 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 Obesity in Children, Asthma in Children, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), and Croup. Dr. Yson is currently accepting new patients.

    Experienced in Diarrhea
    Pediatrics
    Experienced in Diarrhea
    Pediatrics
    Rancho Santa Margarita, CA 
     (1.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Kenson Lo is a Pediatrics provider practicing medicine in Rancho Santa Margarita, California. Dr. Lo is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Obesity in Children, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Herpangina, and Croup. Dr. Lo is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Daniald Rodrigues is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Rodrigues is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Familial Adenomatous Polyposis, Chronic Erosive Gastritis, Gastrectomy, and Endoscopy. Dr. Rodrigues is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English

    Michael Santoro is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Santoro is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Esophagitis, Familial Adenomatous Polyposis, Barrett Esophagus, Turcot Syndrome, and Gastrectomy.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Eric Chu is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Chu is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Hemorrhoids, Diverticular Disease, Gastrectomy, and Colonoscopy. Dr. Chu is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Daniel Kim is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Kim 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 Tenesmus, Familial Adenomatous Polyposis, Heartburn, and Hiatal Hernia. Dr. Kim is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    MemorialCare Medical Group - Mission Viejo

    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Saghi Rokhshadfar is a primary care provider, practicing in Internal Medicine in Mission Viejo, California. Dr. Rokhshadfar 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 Diabetic Nephropathy, Type 2 Diabetes (T2D), High Cholesterol, and Congenital Sucrase-Isomaltase Deficiency. Dr. Rokhshadfar is currently accepting new patients.

    Advanced in Diarrhea
    Family Medicine
    Advanced in Diarrhea
    Family Medicine

    Kolvita Family Medical Group Inc.

    25982 Pala Ste 180, 
    Mission Viejo, CA 
     (4.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Matthew Zeller is a primary care provider, practicing in Family Medicine in Mission Viejo, California. Dr. Zeller is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 35 other conditions, according to our data. His clinical expertise encompasses Cellulitis, Tracheitis, Neuralgia, and Papular Urticaria.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Mj Medical Group Inc

    26501 Rancho Pkwy S, 
    Lake Forest, CA 
     (4.8 miles away)
    Experience:
    41+ years
    Languages Spoken:
    English

    Mohammad Jamal is a Gastroenterologist practicing medicine in Lake Forest, California. He has been practicing medicine for over 41 years. Dr. Jamal is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 105 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Diverticular Disease, Gastrointestinal Bleeding, Endoscopy, and Colonoscopy. Dr. Jamal is board certified in American Board Of Internal Medicine.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Mj Medical Group Inc

    26501 Rancho Pkwy S, 
    Lake Forest, CA 
     (4.8 miles away)
    Experience:
    12+ years
    Languages Spoken:
    English

    Eric Szu is a Gastroenterologist practicing medicine in Lake Forest, California. He has been practicing medicine for over 12 years. Dr. Szu is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 54 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Gastritis, Hereditary Pancreatitis, Gastrectomy, and Colonoscopy. Dr. Szu is board certified in American Board Of Internal Medicine.

    Distinguished in Diarrhea
    Gastroenterology
    Distinguished in Diarrhea
    Gastroenterology

    Digestive Disease Consultants Of Orange County Inc.

    113 Waterworks Way Ste 155, 
    Irvine, CA 
     (9.4 miles away)
    Languages Spoken:
    English

    Shahrooz Bemanian is a Gastroenterologist practicing medicine in Irvine, California. Dr. Bemanian is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. He is also highly rated in 59 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Chronic Erosive Gastritis, Menetrier Disease, Gastrectomy, and Colonoscopy.

    Distinguished in Diarrhea
    Gastroenterology
    Distinguished in Diarrhea
    Gastroenterology

    Digestive Disease Consultants Of Orange County Inc.

    113 Waterworks Way Ste 155, 
    Irvine, CA 
     (9.4 miles away)
    Languages Spoken:
    English

    Matthew Oman is a Gastroenterologist practicing medicine in Irvine, California. Dr. Oman is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. He is also highly rated in 74 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Hemorrhoids, Painful Swallowing, Endoscopy, and Gastrectomy.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Optum - Rancho Santa Margarita

    29873 Santa Margarita Pkwy, 
    Rancho Santa Margarita, CA 
     (0.5 miles away)
    Experience:
    34+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Shaparak Kamarei is a primary care provider, practicing in Internal Medicine in Rancho Santa Margarita, California. She has been practicing medicine for over 34 years. Dr. Kamarei is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Insomnia, Familial Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Kamarei is board certified in American Board Of Internal Medicine. Dr. Kamarei is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Optum - Rancho Santa Margarita

    29873 Santa Margarita Pkwy, 
    Rancho Santa Margarita, CA 
     (0.5 miles away)
    Experience:
    16+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Faranak Ghazi is a primary care provider, practicing in Family Medicine in Rancho Santa Margarita, California. She has been practicing medicine for over 16 years. Dr. Ghazi 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 Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and High Cholesterol. Dr. Ghazi is board certified in American Board Of Family Medicine. Dr. Ghazi is currently accepting new patients.

    Experienced in Diarrhea
    Pediatrics
    Experienced in Diarrhea
    Pediatrics

    Southern Orange County Pediatric Associates-Rsm

    30212 Tomas Ste 220, 
    Rancho Santa Margarita, CA 
     (1.5 miles away)
    Languages Spoken:
    English

    Stephen Tang is a Pediatrics provider practicing medicine in Rancho Santa Margarita, California. Dr. Tang 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 Obesity in Children, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Croup, and Asthma in Children.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Shahram Javaheri MD Inc.

    26691 Plaza Ste 150, 
    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English

    Nader Mirhoseni is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Mirhoseni is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Acute Pancreatitis, Gallstones, Endoscopy, and Gastrectomy.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Allen A Jahroumi, MD

    Mission Viejo, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Allen Jahroumi is a primary care provider, practicing in Family Medicine in Mission Viejo, California. Dr. Jahroumi is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Purpura, Gardner-Diamond Syndrome, Autoerythrocyte Sensitivity, and Cellulitis.

    Showing 1-20 of 156

    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 Rancho Santa Margarita, 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 Rancho Santa Margarita, 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 Rancho Santa Margarita, 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 Rancho Santa Margarita, 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 Rancho Santa Margarita, 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 Rancho Santa Margarita, 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 Rancho Santa Margarita, 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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