The 20 Best Diarrhea Doctors Near Me in Williamsport, PA

Find the Top Diarrhea Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 25 doctor with experience in Diarrhea near Williamsport, PA. Of these, 22 are Experienced and 3 are Advanced.

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25 providers found
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    UPMC Susquehanna Health, Digestive Disease Center

    700 High Street, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Richard Kenney, DO, specializes in gastroenterology and is board-certified by the American Board of Internal Medicine. He practices at UPMC Somerset and the Digestive Disease Center at UPMC Williamsport. Dr. Kenney received his medical degree from Midwestern University Chicago College of Osteopathic Medicine and completed his residency at Lehigh Valley Hospital, followed by a fellowship at the University of Illinois College of Medicine at Chicago. Dr. Kenney is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 62 other conditions, according to our data. His clinical expertise encompasses Acute Pancreatitis, Gastroesophageal Reflux Disease (GERD), Colitis, Gastrectomy, and Endoscopy. Dr. Kenney is board certified in American Board Of Internal Medicine. Dr. Kenney is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Susquehanna Health Digestive Disease Center

    700 High Street, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English

    David Pinn, MD, specializes in gastroenterology and is board-certified by the American Board of Internal Medicine. He is affiliated with UPMC Williamsport. Dr. Pinn received his medical degree from Yeshiva University Albert Einstein College of Medicine and completed his residency at Icahn School of Medicine at Mount Sinai, followed by a fellowship at Albert Einstein College of Medicine. Dr. Pinn 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 Necrotizing Enterocolitis, Pseudomembranous Colitis, Bacterial Gastroenteritis, Gastrectomy, and Endoscopy. Dr. Pinn is board certified in American Board Of Internal Medicine and American Board Of Internal Medicine.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    UPMC Williamsport

    700 High St, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English

    Saadullah Khan is a Gastroenterologist practicing medicine in Williamsport, Pennsylvania. Dr. Khan is rated as an Advanced 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 Angiodysplasia of the Colon, Trichohepatoenteric Syndrome, Diarrhea, Endoscopy, and Gastrectomy.

    Learn about our expert tiers
    Experienced in Diarrhea
    Experienced in Diarrhea

    Susquehanna Health Family Medicine At Montoursville

    900 Plaza Drive, 
    Montoursville, PA 
     (4.5 miles away)
    Languages Spoken:
    English

    Donna Mullarkey, MD, specializes in geriatric medicine and is board-certified in family medicine by the American Board of Family Medicine. She is affiliated with UPMC Williamsport and UPMC Muncy. Dr. Mullarkey completed her residency at Northern Light Eastern Maine Medical Center and medical degree from Mayo Clinic College of Medicine and Science. Dr. Mullarkey is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Chronic Kidney Disease, Breast Cancer, Hyperlipidemia Type 3, and Gitelman Syndrome. Dr. Mullarkey is board certified in American Board Of Family Medicine.

    Experienced in Diarrhea
    Gastroenterology | Pediatric Gastroenterology
    Experienced in Diarrhea
    Gastroenterology | Pediatric Gastroenterology

    Geisinger Gastroenterology/Endoscopy

    10 Choate Circle, 
    Montoursville, PA 
     (5.6 miles away)
    Languages Spoken:
    English

    Dr. Burns is a board-certified and fellowship-trained adult and pediatric gastroenterologist. His clinical interests include general adult and pediatric gastroenterology. Dr. Burns attended Oral Roberts University, where he received his medical degree, and completed his residencies in pediatrics & internal medicine at Geisinger Medical Center. He went on to complete his fellowships in adult and pediatric gastroenterology at Texas A&M University, Scott & White Hospital at University Medical Campus, Temple, TX. Dr. Burns is certified by the American Board of Internal Medicine in adult gastroenterology and by the American Board of Pediatrics in pediatric gastroenterology. Dr. Burns is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Crohn's Disease, Familial Adenomatous Polyposis, Gardner Syndrome, Endoscopy, and Gastrectomy. Dr. Burns is board certified in The American Board Of Internal Medicine In Adult Gastroenterology And By The American Board Of Pediatrics In Pediatric Gastroenterology.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Geisinger Gastroenterology/Endoscopy

    10 Choate Circle, 
    Montoursville, PA 
     (5.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Marika Bergenstock is a Gastroenterologist practicing medicine in Montoursville, Pennsylvania. Dr. Bergenstock is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Diarrhea, Lactose Intolerance, Tropical Sprue, and Trichohepatoenteric Syndrome. Dr. Bergenstock is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Geisinger Montoursville - Gastroenterology

    10 Choate Circle, 
    Montoursville, PA 
     (5.6 miles away)
    Languages Spoken:
    English

    Robert Purcell, MD, is a board-certified and fellowship-trained gastroenterologist, also known as a GI doctor. Dr. Purcell has a special interest in endoscopic retrograde cholangiopancreatography (ERCP), a method to diagnose and treat liver, gallbladder, pancreas and bile duct diseases, and general gastroenterology.|Dr. Purcell earned his medical degree from New York Medical College. He completed his residency in internal medicine at Danbury Hospital and his fellowship in gastroenterology at Bridgeport Hospital, both in Connecticut.|Dr. Purcell is certified by the American Board of Internal Medicine in gastroenterology. Dr. Purcell 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 Familial Adenomatous Polyposis, Morning Sickness, Crohn's Disease, Gastrectomy, and Colonoscopy. Dr. Purcell is board certified in The American Board Of Internal Medicine In Gastroenterology.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Geisinger Gastroenterology/Endoscopy

    10 Choate Circle, 
    Montoursville, PA 
     (5.6 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English, Filipino, Ilocano
    Accepting New Patients
    Offers Telehealth

    Claire Southern is a Gastroenterologist practicing medicine in Montoursville, Pennsylvania. She has been practicing medicine for over 17 years. Dr. Southern is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Sepsis, Acute Pancreatitis, Familial Adenomatous Polyposis, Childhood Pancreatitis, and Gastrostomy. Dr. Southern is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Divine Providence Hospital Of The Sisters Of Christian Charity

    471 Hepburn St, 
    Williamsport, PA 
     (0.3 miles away)
    Languages Spoken:
    English

    William Bartlow is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Bartlow 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 Breast Cancer, Prothrombin Deficiency, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    UPMC Williamsport

    700 High St, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English

    Puneet Basi is a Gastroenterologist practicing medicine in Williamsport, Pennsylvania. Dr. Basi is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 29 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Angiodysplasia of the Colon, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy.

    Experienced in Diarrhea
    Experienced in Diarrhea

    UPMC Williamsport

    700 High St, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Qasim Mahmood is a Pediatrics provider practicing medicine in Williamsport, Pennsylvania. Dr. Mahmood 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 Obesity in Children, Developmental Dysphasia Familial, Umbilical Hernia, and Croup.

    Experienced in Diarrhea
    Emergency Medicine
    Experienced in Diarrhea
    Emergency Medicine

    UPMC Williamsport Emergency Department

    700 High Street, 
    Williamsport, PA 
     (0.8 miles away)
    Languages Spoken:
    English

    James Freeman, MD, specializes in emergency medicine and is board-certified in family medicine by the American Board of Family Medicine. He is affiliated with UPMC Williamsport. Dr. Freeman received his medical degree from Thomas Jefferson University Sidney Kimmel Medical College and completed his residency at UPMC in Central Pa. Dr. Freeman 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 Anemia, Headache, Labyrinthitis, and Familial Neurocardiogenic Syncope. Dr. Freeman is board certified in American Board Of Family Medicine.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Susquehanna Physician Services

    145 Shaffer St, 
    Williamsport, PA 
     (2.2 miles away)
    Languages Spoken:
    English

    Thomas Wallace is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Wallace is rated as an Experienced 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 Unstable Angina, Lung Nodules, Familial Colorectal Cancer, and Colorectal Cancer.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    UPMC Digestive Health Care

    700 High Street, Floor 2, 
    Williamsport, PA 
     (10.4 miles away)
    Languages Spoken:
    English, Hindi, Punjabi
    Accepting New Patients
    Offers Telehealth

    Vivek Kumar, MD, specializes in gastroenterology and is certified by the American Board of Internal Medicine. He practices at UPMC Susquehanna Health Digestive Disease Center and is affiliated with UPMC Muncy and UPMC Williamsport. He completed his medical degree at Delhi University Maulana Azad Medical College. Dr. Kumar is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Acute Pancreatitis, Hereditary Pancreatitis, Chronic Erosive Gastritis, Endoscopy, and Gastrectomy. Dr. Kumar is board certified in American Board Of Internal Medicine. Dr. Kumar is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    UPMC Digestive Health Care

    10 Shady Lane, Suite 180, 
    Muncy, PA 
     (13.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Stacy Prall, DO, specializes in gastroenterology and is certified in gastroenterology by the American Board of Internal Medicine. She practices in Lewisburg, and at UPMC Williamsport, and UPMC Muncy. She completed her medical degree at the University of New England College of Osteopathic Medicine and residency and fellowship at Geisinger Medical Center. Dr. Prall 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 Gas Bloat Syndrome, Familial Adenomatous Polyposis, Gardner Syndrome, Endoscopy, and Gastrectomy. Dr. Prall is board certified in American Board Of Internal Medicine. Dr. Prall is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Office

    1500 Broad St, 
    Montoursville, PA 
     (5.3 miles away)
    Languages Spoken:
    English

    Robert Muller is a primary care provider, practicing in Family Medicine in Montoursville, Pennsylvania. Dr. Muller 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 Breast Cancer, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Office

    900 Plaza Dr Ste A, 
    Montoursville, PA 
     (7.6 miles away)
    Languages Spoken:
    English

    Ingrid Ockenhouse is a primary care provider, practicing in Internal Medicine in Montoursville, Pennsylvania. Dr. Ockenhouse is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Juvenile Primary Osteoporosis, Chronic Obstructive Pulmonary Disease (COPD), Type 2 Diabetes (T2D), and Maturity Onset Diabetes of the Young.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    UPMC Susquehanna Health, Internal Medicine

    700 High Street, Floor 9, 
    Williamsport, PA 
     (10.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Daniel Glunk, MD, is certified by the American Board of Internal Medicine. He practices at UPMC Susquehanna Health, Internal Medicine and is affiliated with UPMC Williamsport. He completed his residency at the University of Pittsburgh School of Medicine and medical degree at Hahnemann University Hospital. Dr. Glunk 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 Chronic Kidney Disease, Hyperlipidemia Type 3, Chronic Cough, and Type 2 Diabetes (T2D). Dr. Glunk is board certified in American Board Of Internal Medicine. Dr. Glunk is currently accepting new patients.

    Experienced in Diarrhea
    Experienced in Diarrhea

    UPMC Primary Care

    175 Pine Street, 
    Williamsport, PA 
     (10.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michelle Cavanaugh, MD, specializes in family medicine and is certified by the American Board of Family Medicine. She is affiliated with UPMC Williamsport. She completed her medical degree at Penn State College of Medicine - Hershey. Dr. Cavanaugh 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 Hyperlipidemia Type 3, Osteoarthritis, Urinary Tract Infection in Children, and Kidney Stones. Dr. Cavanaugh is board certified in American Board Of Family Medicine. Dr. Cavanaugh is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Geisinger Medical Center Muncy - Community Medicine

    255 Route 220 Highway, 
    Muncy, PA 
     (13.8 miles away)
    Languages Spoken:
    English, Spanish
    Accepting New Patients
    Offers Telehealth

    Eddie Rodriguez-Lopez, MD, is a board-certified family medicine physician, also called a primary care doctor. His clinical interests include diabetes and chronic health conditions.|Dr. Rodriguez-Lopez earned his medical degree from the Ponce School of Medicine and completed his residency at Penn State Good Samaritan Hospital. He speaks both English and Spanish. Dr. Rodriguez is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Rodriguez is currently accepting new patients.

    Showing 1-20 of 25

    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 Williamsport, PA?

    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 Williamsport, PA?

    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 Williamsport, PA?

    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 Williamsport, PA?

    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 Williamsport, PA?

    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 Williamsport, PA?

    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 Williamsport, PA?

    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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