The 20 Best Colonoscopy Doctors near Oshkosh, WI

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 09/26/2026

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MediFind found 11 doctor with experience in Colonoscopy near Oshkosh, WI. Of these, 10 are Experienced and 1 are Advanced.

Location
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11 providers found
    Advanced in Colonoscopy
    Advanced in Colonoscopy
    Referral may be required

    Aurora Medical Center Of Oshkosh

    855 N Westhaven Dr, 
    Oshkosh, WI 
     (2.5 miles away)
    Experience:
    44+ years
    Languages Spoken:
    English
    Accepting New Patients

    Christopher Magiera is a Gastroenterologist practicing medicine in Oshkosh, Wisconsin. He has been practicing medicine for over 44 years. Dr. Magiera is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Angiodysplasia of the Colon, Gastrointestinal Bleeding, Intestinal Cancer, Gastrectomy, and Colonoscopy. Dr. Magiera is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    Ascension Medical Group Wisconsin - Ninth Avenue|Suite 305

    2700 W 9th Ave, Ste 305, 
    Oshkosh, WI 
     (3.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Jeffrey Andreini is a Gastroenterologist practicing medicine in Oshkosh, Wisconsin. Dr. Andreini is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Gardner Syndrome, Turcot Syndrome, Familial Adenomatous Polyposis, Endoscopy, and Colonoscopy. Dr. Andreini is board certified in The American Board Of Internal Medicine - Gastroenterology, American Board Of Internal Medicine, Gastroenterology, and The American Board Of Internal Medicine - Internal Medicine. Dr. Andreini is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    Aurora Medical Center Of Oshkosh

    855 N Westhaven Dr, 
    Oshkosh, WI 
     (2.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Milton Johnson is a Gastroenterologist practicing medicine in Oshkosh, Wisconsin. Dr. Johnson is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Esophagitis, Hemorrhoids, Mallory-Weiss Syndrome, Endoscopy, and Colonoscopy. Dr. Johnson is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Aurora Medical Center Of Oshkosh

    855 N Westhaven Dr, 
    Oshkosh, WI 
     (2.5 miles away)
    Languages Spoken:
    English

    Rolando Espiritu is a primary care provider, practicing in Internal Medicine in Oshkosh, Wisconsin. Dr. Espiritu is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Sepsis, Atypical Pneumonia, Hospital-Acquired Pneumonia, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    Aurora Medical Center Of Oshkosh

    855 N Westhaven Dr, 
    Oshkosh, WI 
     (2.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Bennett Pastika is a Gastroenterologist practicing medicine in Oshkosh, Wisconsin. Dr. Pastika is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Esophagitis, Colitis, Viral Gastroenteritis, Endoscopy, and Gastrectomy. Dr. Pastika is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    Aurora Medical Center Of Oshkosh

    855 N Westhaven Dr, 
    Oshkosh, WI 
     (2.5 miles away)
    Languages Spoken:
    English

    Dirk Van Leeuwen is a Gastroenterologist practicing medicine in Oshkosh, Wisconsin. Dr. Van Leeuwen is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Gastrointestinal Bleeding, Portal Hypertension, Colitis, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Aurora Medical Center Of Oshkosh

    855 N Westhaven Dr, 
    Oshkosh, WI 
     (2.5 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Accepting New Patients

    Susan Nystrom is a primary care provider, practicing in Internal Medicine in Oshkosh, Wisconsin. She has been practicing medicine for over 18 years. Dr. Nystrom is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Sepsis, Lemierre Syndrome, Peptic Ulcer, Ureteroscopy, and Endoscopy. Dr. Nystrom is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Ascension NE Wisconsin Inc

    500 S Oakwood Rd, 
    Oshkosh, WI 
     (3.1 miles away)
    Languages Spoken:
    English

    Ann-marie Edwards is a primary care provider, practicing in Internal Medicine in Oshkosh, Wisconsin. Dr. Edwards is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Sepsis, Liver Failure, Gastrointestinal Bleeding, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Ascension NE Wisconsin Inc

    500 S Oakwood Rd, 
    Oshkosh, WI 
     (3.1 miles away)
    Languages Spoken:
    English

    Raul Garcia is a primary care provider, practicing in Internal Medicine in Oshkosh, Wisconsin. Dr. Garcia is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Low Blood Pressure, Sepsis, Gitelman Syndrome, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    ThedaCare GastroenterologyNeenah

    200 Theda Clark Medical Plaza, Ste 310, 
    Neenah, WI 
     (12.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Timothy Edison is a Gastroenterologist practicing medicine in Neenah, Wisconsin. Dr. Edison is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 47 other conditions, according to our data. His clinical expertise encompasses Crohn's Disease, Esophagitis, Colitis, Endoscopy, and Gastrectomy. Dr. Edison is board certified in Gastroenterology, American Board Of Internal Medicine (1993) and Internal Medicine, American Board Of Internal Medicine (1990). Dr. Edison is currently accepting new patients.

    Experienced in Colonoscopy
    Palliative Medicine
    Experienced in Colonoscopy
    Palliative Medicine
    Referral may be required

    ThedaCare Regional Medical CenterNeenah

    130 Second Street, 
    Neenah, WI 
     (12.1 miles away)
    Languages Spoken:
    English

    Atul Dogra is a Palliative Medicine provider practicing medicine in Neenah, Wisconsin. Dr. Dogra is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Heart Failure with Preserved Ejection Fraction (HFpEF), Endoscopy, and Colonoscopy. Dr. Dogra is board certified in Family Medicine, American Board Of Family Medicine (2009) and Eligible (5year Grace Period) (2025).

    Showing 1-11 of 11

    Last Updated: 09/26/2026

    What is the definition of Colonoscopy?

    A colonoscopy is an exam that views the inside of the colon (large intestine) and rectum, using a tool called a colonoscope.

    The colonoscope has a small camera attached to a flexible tube that can reach the entire length of the colon.

    When should I see a Colonoscopy doctor near Oshkosh, WI?

    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 Colonoscopy doctor near Oshkosh, WI?

    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 Colonoscopy doctors near Oshkosh, WI?

    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 Colonoscopy doctors near Oshkosh, WI?

    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 Colonoscopy doctor near Oshkosh, WI?

    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 Colonoscopy doctor search results page. 

    Why is it important to get a second opinion from a different Colonoscopy 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 Colonoscopy doctor near Oshkosh, WI?

    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 Colonoscopy 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 Colonoscopy 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 Colonoscopy doctors near Oshkosh, WI?

    Look for the filter feature on the left side of the Colonoscopy 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 Colonoscopy doctor that offers video calls?

    Look for the filter feature on the left-side of the Colonoscopy 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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