The 20 Best Diarrhea Doctors Near Me in o fallon, MO

Find the Top Diarrhea Experts and Specialists

Last Updated: 09/26/2026

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MediFind found 78 doctor with experience in Diarrhea near o fallon, MO. Of these, 72 are Experienced and 3 are Advanced.

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78 providers found
    Experienced in Diarrhea
    Experienced in Diarrhea

    SSM Health Medical Group

    1101 Highway K, 
    O Fallon, MO 
     (1.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michael Hemmersmeier is a primary care provider, practicing in Family Medicine in O Fallon, Missouri. Dr. Hemmersmeier is rated as an Experienced 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 Hypertension, Coronary Heart Disease, Sacroiliac Joint Disease, Hypothyroidism, and Endoscopy. Dr. Hemmersmeier is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , American Board Of Family Medicine , Missouri State Board Of Registration, and Drug Enforcement Administration . Dr. Hemmersmeier is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Contemporary Womens Healthcare

    20 Progress Point Pkwy Ste 108, 
    O Fallon, MO 
     (6.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jamie Tueth is a primary care provider, practicing in Internal Medicine in O Fallon, Missouri. Dr. Tueth 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 Thrombocytopenia, Hypothyroidism, Type 2 Diabetes (T2D), and Obesity in Children. Dr. Tueth is currently accepting new patients.

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

    SSM Health Medical Group

    300 Medical Plaza, Suite 310, 
    Lake St. Louis, MO 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Joseph Rodemann is a Gastroenterologist practicing medicine in Lake St. Louis, Missouri. Dr. Rodemann 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 Morning Sickness, Esophagitis, Painful Swallowing, Endoscopy, and Colonoscopy. Dr. Rodemann is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , Missouri State Board Of Registration, Drug Enforcement Administration , and American Board Of Internal Medicine/Gastroenterology . Dr. Rodemann is currently accepting new patients.

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

    SSM Health Medical Group

    300 Medical Plaza, Suite 310, 
    Lake St. Louis, MO 
     (4.1 miles away)
    Languages Spoken:
    English, Punjabi, Urdu
    Accepting New Patients
    Offers Telehealth

    Syed Tariq is a Gastroenterologist practicing medicine in Lake St. Louis, Missouri. Dr. Tariq is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Crohn's Disease, Familial Adenomatous Polyposis, Colonoscopy, and Endoscopy. Dr. Tariq is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , Missouri State Board Of Registration, Drug Enforcement Administration , and American Board Of Internal Medicine/Gastroenterology . Dr. Tariq is currently accepting new patients.

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

    SSM Health Medical Group

    300 Medical Plaza, Suite 310, 
    Lake St. Louis, MO 
     (4.1 miles away)
    Languages Spoken:
    English, Arabic
    Accepting New Patients

    Louay Omran is a Gastroenterologist practicing medicine in Lake St. Louis, Missouri. Dr. Omran is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Choledocholithiasis, Childhood Pancreatitis, Acute Pancreatitis, Endoscopy, and Colonoscopy. Dr. Omran is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , Missouri State Board Of Registration, Drug Enforcement Administration , and American Board Of Internal Medicine/Gastroenterology . Dr. Omran is currently accepting new patients.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    SSM Health Medical Group

    300 Medical Plaza, Suite 310, 
    Lake St. Louis, MO 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Elizabeth Marsicano is a Gastroenterologist practicing medicine in Lake St. Louis, Missouri. Dr. Marsicano 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 Ascites, Diverticular Disease, Hemorrhoids, Endoscopy, and Gastrectomy. Dr. Marsicano is board certified in American Board Of Internal Medicine/Gastroenterology , Missouri Dept Of Health/Narcotics&Dangerous Drugs , Missouri State Board Of Registration, American Board Of Internal Medicine , and Drug Enforcement Administration . Dr. Marsicano is currently accepting new patients.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology
    Referral may be required

    Office

    2 Progress Point Pkwy Ste 206, 
    O Fallon, MO 
     (4.4 miles away)
    Languages Spoken:
    English, Arabic
    Accepting New Patients

    Chaudhary Khan is a Gastroenterologist practicing medicine in O Fallon, Missouri. Dr. Khan is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Esophagitis, Heartburn, Gastrectomy, and Colonoscopy. Dr. Khan is currently accepting new patients.

    Pediatric Gastroenterology | Pediatrics
    Pediatric Gastroenterology | Pediatrics
    Referral may be required

    SSM Health Cardinal Glennon Pediatrics Specialty Services

    301 Caledonia Parkway, Suite 220, 
    O Fallon, MO 
     (4.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Helen Pappa is a Pediatric Gastroenterologist and a Pediatrics provider practicing medicine in O Fallon, Missouri. Dr. Pappa is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Viral Gastroenteritis, Crohn's Disease, Malnutrition, Ulcerative Colitis, and Endoscopy. Dr. Pappa is board certified in American Board Of Pediatrics , Missouri Dept Of Health/Narcotics&Dangerous Drugs , American Board Of Pediatrics/Gastroenterology , Illinois Department Of Financial & Professional Regulation , Missouri State Board Of Registration, and Drug Enforcement Administration . Dr. Pappa is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    BJC Medical Group At O'Fallon

    2630 Highway K, 
    O Fallon, MO 
     (2.7 miles away)
    Languages Spoken:
    English

    Judith Dibble is a primary care provider, practicing in Internal Medicine in O Fallon, Missouri. Dr. Dibble 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 Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, Breast Cancer, and Nephrosclerosis.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Office

    300 Winding Woods Dr Ste 218, 
    O Fallon, MO 
     (3.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    James Ketchum is a primary care provider, practicing in Internal Medicine in O Fallon, Missouri. Dr. Ketchum 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 Sitosterolemia, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension. Dr. Ketchum is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Ssm Health St. Joseph Hospital-Lake Saint Louis

    100 Medical Plz, 
    Lake Saint Louis, MO 
     (4.1 miles away)
    Languages Spoken:
    English

    Scott Landry is a primary care provider, practicing in Internal Medicine in Lake Saint Louis, Missouri. Dr. Landry 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 Acute Myeloblastic Leukemia without Maturation, Acute Myeloid Leukemia (AML), Familial Neurocardiogenic Syncope, Fainting, and Endoscopy.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Ssm Health St. Joseph Hospital-Lake Saint Louis

    100 Medical Plz, 
    Lake Saint Louis, MO 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    David Lickerman is a primary care provider, practicing in Internal Medicine in Lake Saint Louis, Missouri. Dr. Lickerman 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 Dehydration, Interstitial Nephritis, Acute Cystitis, Lymphangitis, and Endoscopy. Dr. Lickerman is currently accepting new patients.

    Experienced in Diarrhea
    Pediatrics | Internal Medicine
    Experienced in Diarrhea
    Pediatrics | Internal Medicine
    Referral may be required
    100 Medical Plaza, Hospitalist, 
    Lake St. Louis, MO 
     (4.1 miles away)
    Languages Spoken:
    English

    Deborah Goldberg is a primary care provider, practicing in Pediatrics and Internal Medicine in Lake St. Louis, Missouri. Dr. Goldberg 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 Sepsis, Peptic Ulcer, Necrosis, Endoscopy, and Colonoscopy. Dr. Goldberg is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , Illinois Department Of Financial & Professional Regulation , American Board Of Pediatrics , Missouri State Board Of Registration, American Board Of Internal Medicine , and Drug Enforcement Administration .

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

    Premier Infectious Disease Consultants-O'Fallon

    20 Progress Point Pkwy Ste 206, 
    O Fallon, MO 
     (4.4 miles away)
    Languages Spoken:
    English, Hindi, Punjabi, Urdu
    Accepting New Patients

    Qaiser Jawaid is a Gastroenterologist practicing medicine in O Fallon, Missouri. Dr. Jawaid is rated as an Experienced 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 Choledocholithiasis, Diverticular Disease, Menetrier Disease, Endoscopy, and Gastrectomy. Dr. Jawaid is currently accepting new patients.

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

    Office

    5551 Winghaven Blvd Ste 250, 
    O Fallon, MO 
     (4.4 miles away)
    Languages Spoken:
    English, Spanish
    Accepting New Patients

    David Lotsoff is a Gastroenterologist practicing medicine in O Fallon, Missouri. Dr. Lotsoff 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 Lower Esophageal Ring, Benign Esophageal Stricture, Painful Swallowing, Gastrectomy, and Gastrostomy. Dr. Lotsoff is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    St. Luke's Internal Medicine At WingHaven

    5551 Winghaven Blvd Ste 290, 
    O Fallon, MO 
     (4.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Gary Gray is a primary care provider, practicing in Internal Medicine in O Fallon, Missouri. Dr. Gray 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 Hereditary Neuralgic Amyotrophy, Chronic Cough, Anemia, and Congenital Hemolytic Anemia. Dr. Gray is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    SSM Health Medical Group

    6994 Mexico Road, 
    St. Peters, MO 
     (5.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Joy Stowell is a primary care provider, practicing in Family Medicine in St. Peters, Missouri. Dr. Stowell is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 11 other conditions, according to our data. Her clinical expertise encompasses Ringworm, Atrial Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), and Paroxysmal Supraventricular Tachycardia (PSVT). Dr. Stowell is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , American Board Of Family Medicine , Missouri State Board Of Registration, and Drug Enforcement Administration . Dr. Stowell is currently accepting new patients.

    Advanced in Diarrhea
    Internal Medicine
    Advanced in Diarrhea
    Internal Medicine

    Office

    200 Brevco Plz Ste 208, 
    Lake Saint Louis, MO 
     (5.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Michael Zerega is a primary care provider, practicing in Internal Medicine in Lake Saint Louis, Missouri. Dr. Zerega is rated as an Advanced 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 Collagenous Colitis, Colitis, Diverticular Disease, Gastrostomy, and Endoscopy. Dr. Zerega is currently accepting new patients.

    Family Medicine
    Family Medicine

    SSM Health Medical Group

    1475 Kisker Road, Suite 200, 
    St. Charles, MO 
     (6.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Thomas Lord is a primary care provider, practicing in Family Medicine in St. Charles, Missouri. Dr. Lord 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 Chronic Obstructive Pulmonary Disease (COPD), Lung Metastases, Type 2 Diabetes (T2D), Familial Hypertension, and Endoscopy. Dr. Lord is board certified in Missouri Dept Of Health/Narcotics&Dangerous Drugs , American Board Of Family Medicine , Missouri State Board Of Registration, and Drug Enforcement Administration . Dr. Lord is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    SSM Health Medical Group

    2024 Dorsett Village, 
    Maryland Heights, MO 
     (14.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Timothy Jennings is a primary care provider, practicing in Family Medicine in Maryland Heights, Missouri. Dr. Jennings 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 Migraine, Chronic Obstructive Pulmonary Disease (COPD), Maturity Onset Diabetes of the Young, and Type 2 Diabetes (T2D). Dr. Jennings is board certified in American Osteopathic Board Of Family Physicians , Missouri Dept Of Health/Narcotics&Dangerous Drugs , Missouri State Board Of Registration, and Drug Enforcement Administration . Dr. Jennings is currently accepting new patients.

    Showing 1-20 of 78

    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 o fallon, MO?

    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 o fallon, MO?

    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 o fallon, MO?

    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 o fallon, MO?

    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 o fallon, MO?

    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 o fallon, MO?

    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 o fallon, MO?

    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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