The 20 Best Diarrhea Doctors Near Me in Merrillville, IN

Find the Top Diarrhea Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 89 doctor with experience in Diarrhea near Merrillville, IN. Of these, 76 are Experienced, 12 are Advanced and 1 are Distinguished.

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89 providers found
    Experienced in Diarrhea
    Experienced in Diarrhea

    NorthShore Health Centers

    6091 Broadway, 
    Merrillville, IN 
     (0.2 miles away)
    Languages Spoken:
    English

    Ramadevi Sankaran is a Pediatrics provider practicing medicine in Merrillville, Indiana. Dr. Sankaran 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, Autism Spectrum Disorder, Viral Gastroenteritis, and Delayed Growth.

    Distinguished in Diarrhea
    Internal Medicine
    Distinguished in Diarrhea
    Internal Medicine

    Rudyard Smith MD And Associates, SC

    9250 Columbia Ave, 
    Munster, IN 
     (10.0 miles away)
    Languages Spoken:
    English

    Rudyard Smith is a primary care provider, practicing in Internal Medicine in Munster, Indiana. Dr. Smith is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Anemia, Trichohepatoenteric Syndrome, Diarrhea, Gastrostomy, and Endoscopy. Dr. Smith is board certified in American Board Of Internal Medicine.

    Advanced in Diarrhea
    Internal Medicine
    Advanced in Diarrhea
    Internal Medicine

    Merrillville Surgery Center LLC

    101 E 87th Ave, 
    Merrillville, IN 
     (1.7 miles away)
    Languages Spoken:
    English

    Ammar Hassan is an Internal Medicine provider practicing medicine in Merrillville, Indiana. Dr. Hassan is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 48 other conditions, according to our data. His clinical expertise encompasses Watermelon Stomach, Angiodysplasia of the Colon, Painful Swallowing, Gastrectomy, and Gastrostomy.

    Learn about our expert tiers
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Ima Endoscopy Surgicenter PC

    8895 Broadway, 
    Merrillville, IN 
     (1.8 miles away)
    Languages Spoken:
    English

    John Mirro is a Gastroenterologist practicing medicine in Merrillville, Indiana. Dr. Mirro 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 Diverticular Disease, Colitis, Benign Esophageal Stricture, Endoscopy, and Gastrostomy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Chhabra Medical Corporation PC

    7835 Grand Blvd, 
    Hobart, IN 
     (3.9 miles away)
    Languages Spoken:
    English

    Mark Fesenmyer is a Gastroenterologist practicing medicine in Hobart, Indiana. Dr. Fesenmyer is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 31 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Gastrointestinal Bleeding, Hiatal Hernia, Endoscopy, and Gastrectomy.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    NorthShore Health Centers

    2490 Central Avenue, 
    Lake Station, IN 
     (7.3 miles away)
    Languages Spoken:
    English

    Reynaldo Caluag is a primary care provider, practicing in Family Medicine in Lake Station, Indiana. Dr. Caluag is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Hypertension, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Maturity Onset Diabetes of the Young.

    Experienced in Diarrhea
    Experienced in Diarrhea

    NorthShore Health Centers

    2490 Central Avenue, 
    Lake Station, IN 
     (7.3 miles away)
    Languages Spoken:
    English

    Pablo Chagoya is a Pediatrics provider practicing medicine in Lake Station, Indiana. Dr. Chagoya 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, Roseola, Delayed Growth, and Asthma in Children.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Centers For Neurological Diseases PC

    521 E 86th Ave Ste Z, 
    Merrillville, IN 
     (0.2 miles away)
    Languages Spoken:
    English

    Chirag Patel is a primary care provider, practicing in Internal Medicine in Merrillville, Indiana. Dr. Patel is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Alzheimer's Disease, Dementia, Glucocorticoid-Remediable Aldosteronism, Hip Replacement, and Endoscopy.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Merrillville Surgery Center LLC

    101 E 87th Ave, 
    Merrillville, IN 
     (1.7 miles away)
    Languages Spoken:
    English

    Ted George is a Gastroenterologist practicing medicine in Merrillville, Indiana. Dr. George 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 Small Bowel Bacterial Overgrowth, Ascites, Viral Gastroenteritis, and Diarrhea.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Methodist Physician Group-Pavilion C, Family Medicine B

    8777 Broadway, 
    Merrillville, IN 
     (1.7 miles away)
    Languages Spoken:
    English

    Lauren Harting is a primary care provider, practicing in Family Medicine in Merrillville, Indiana. Dr. Harting 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 Acute Kidney Failure, Visceromegaly, Pleurisy, Endoscopy, and Gastrostomy.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Methodist Physician Group-Pavilion D, Family Medicine

    311 E 89th Ave, 
    Merrillville, IN 
     (1.8 miles away)
    Languages Spoken:
    English

    Fadi Alzeidan is a primary care provider, practicing in Family Medicine in Merrillville, Indiana. Dr. Alzeidan 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 Urinary Tract Infection in Children, Hypertensive Heart Disease, Memory Loss, Gastrostomy, and Endoscopy.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Ima Endoscopy Surgicenter PC

    8895 Broadway, 
    Merrillville, IN 
     (1.8 miles away)
    Languages Spoken:
    English

    Peter Mavrelis is a Gastroenterologist practicing medicine in Merrillville, Indiana. Dr. Mavrelis is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Esophagitis, Gastroesophageal Reflux Disease (GERD), Hiatal Hernia, Endoscopy, and Gastrostomy.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Family Medicine Associates LLC

    5857 Broadway, 
    Merrillville, IN 
     (1.9 miles away)
    Languages Spoken:
    English

    Augustine Izah is a primary care provider, practicing in Family Medicine in Merrillville, Indiana. Dr. Izah is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Necrosis, Hypertensive Heart Disease, Acute Kidney Failure, Gastrostomy, and Bone Marrow Aspiration.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    St Mary Medical Center Inc

    1500 S Lake Park Ave, 
    Hobart, IN 
     (4.2 miles away)
    Languages Spoken:
    English

    Jyothi Achankunju is a primary care provider, practicing in Internal Medicine in Hobart, Indiana. Dr. Achankunju is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Acute Kidney Failure, Colitis, Hypertensive Heart Disease, Endoscopy, and Ureteroscopy.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Community Care Network Inc

    7651 Harvest Dr, 
    Schererville, IN 
     (4.3 miles away)
    Languages Spoken:
    English

    John Rogers is a primary care provider, practicing in Family Medicine in Schererville, Indiana. Dr. Rogers 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 Tracheitis, Costochondritis, Tietz Syndrome, and Cellulitis.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Office

    6625 W Lincoln Hwy, 
    Crown Point, IN 
     (4.4 miles away)
    Languages Spoken:
    English

    Mary Tilak is a primary care provider, practicing in Internal Medicine in Crown Point, Indiana. Dr. Tilak is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 16 other conditions, according to our data. Her clinical expertise encompasses Hypothyroidism, Obesity in Children, Coronary Heart Disease, Colonoscopy, and Cardiac Ablation.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Dr. Erin Vicari PC

    166 S West St, 
    Crown Point, IN 
     (5.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Erin Vicari is a primary care provider, practicing in Internal Medicine in Crown Point, Indiana. Dr. Vicari is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Maturity Onset Diabetes of the Young, Chronic Cough, Postmenopausal Osteoporosis, Cardiac Ablation, and Pacemaker Implantation.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Community Care Network Gastroenterology

    10215 Broadway Ste 203, 
    Crown Point, IN 
     (5.5 miles away)
    Languages Spoken:
    English

    Kumar Venkatachalam is a Gastroenterologist practicing medicine in Crown Point, Indiana. Dr. Venkatachalam is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 43 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Visceromegaly, Trichohepatoenteric Syndrome, Gastrostomy, and Endoscopy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Community Care Network Gastroenterology

    10215 Broadway Ste 203, 
    Crown Point, IN 
     (5.5 miles away)
    Languages Spoken:
    English

    Alaa Atieh is a Gastroenterologist practicing medicine in Crown Point, Indiana. Dr. Atieh 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 Eosinophilic Esophagitis, Hemorrhoids, Chronic Erosive Gastritis, Gastrectomy, and Gastrostomy.

    Advanced in Diarrhea
    Internal Medicine
    Advanced in Diarrhea
    Internal Medicine

    Dalal Medical Corp.

    9410 Calumet Ave Ste 401, 
    Munster, IN 
     (9.9 miles away)
    Languages Spoken:
    English

    Mohsen Khan is an Internal Medicine provider practicing medicine in Munster, Indiana. Dr. Khan is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 63 other conditions, according to our data. His clinical expertise encompasses Swallowing Difficulty, Painful Swallowing, Gastritis, Gastrectomy, and Endoscopy.

    Showing 1-20 of 89

    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 Merrillville, IN?

    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 Merrillville, IN?

    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 Merrillville, IN?

    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 Merrillville, IN?

    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 Merrillville, IN?

    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 Merrillville, IN?

    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 Merrillville, IN?

    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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