The 20 Best Colonoscopy Doctors near Clackamas, OR

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 02/22/2026

Save doctors for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Already have a doctor?
Find A Second Opinion

MediFind found 63 doctor with experience in Colonoscopy near Clackamas, OR. Of these, 59 are Experienced, 2 are Advanced, 1 are Distinguished and 1 are Elite.

Location
LocationClose
63 providers found
    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    University Andrology Lab LLC

    3303 S Bond Ave, 
    Portland, OR 
     (8.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Seth Crockett is a Gastroenterologist in Portland, Oregon. Dr. Crockett is rated as an Elite provider by MediFind in Colonoscopy. His top areas of expertise are Colorectal Cancer, Colorectal Polyps, Sclerosing Mesenteritis, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy
    10150 Southeast 32nd Avenue, 
    Milwaukie, OR 
     (3.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Kimya-anhcina Nguyen is a Gastroenterologist in Milwaukie, Oregon. Dr. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Diverticular Disease, Esophagitis, Hemorrhoids, Gastrectomy, and Colonoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Kaiser Foundation Health Plan Of The Northwest

    9900 SE Sunnyside Rd, 
    Clackamas, OR 
     (1.8 miles away)
    Languages Spoken:
    English

    Theodore Tollivoro is a Gastroenterologist in Clackamas, Oregon. Dr. Tollivoro is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Acute Pancreatitis, Intestinal Cancer, Childhood Pancreatitis, Gastrectomy, and Colonoscopy.

    Learn about our expert tiers
    Distinguished in Colonoscopy
    Gastroenterology
    Distinguished in Colonoscopy
    Gastroenterology

    Office

    3710 SW US Veterans Hospital Rd, 
    Portland, OR 
     (8.3 miles away)
    Languages Spoken:
    English

    Amnon Sonnenberg is a Gastroenterologist in Portland, Oregon. Dr. Sonnenberg is rated as a Distinguished provider by MediFind in Colonoscopy. His top areas of expertise are Helicobacter Pylori Infection, Gastritis, Viral Gastroenteritis, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Sunnybrook Medical Office

    9900 SE Sunnyside Road, 
    Clackamas, OR 
     (1.7 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients

    John Randles is a Gastroenterologist in Clackamas, Oregon. Dr. Randles has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Crohn's Disease, Gardner Syndrome, Turcot Syndrome, Endoscopy, and Gastrectomy. Dr. Randles is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Kaiser Sunnyside Medical Center

    10180 SE Sunnyside Rd, 
    Clackamas, OR 
     (1.7 miles away)
    Languages Spoken:
    English

    David Gevorgyan is a primary care provider, practicing in Internal Medicine in Clackamas, Oregon. Dr. Gevorgyan is rated as an Experienced provider by MediFind in Colonoscopy. His top area of expertise is Colonoscopy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy

    Sunnybrook Medical Office

    9900 SE Sunnyside Rd, 
    Clackamas, OR 
     (1.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Rajasekhara Mummadi is a Gastroenterologist in Clackamas, Oregon. Dr. Mummadi is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Colorectal Cancer, Cholangitis, Sclerosing Cholangitis, Colonoscopy, and Endoscopy. Dr. Mummadi is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Kaiser Foundation Health Plan Of The Northwest

    9900 SE Sunnyside Rd, 
    Clackamas, OR 
     (1.8 miles away)
    Languages Spoken:
    English

    Stuart Thomas is a Gastroenterologist in Clackamas, Oregon. Dr. Thomas is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Visceromegaly, Macroamylasemia, Enlarged Liver, Colonoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Kaiser Permanente Sunnybrook Medical Office - Gastroenterology Department

    9900 SE Sunnyside Rd, 
    Clackamas, OR 
     (1.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Vikas Garg is a Gastroenterologist in Clackamas, Oregon. Dr. Garg is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Hepatitis C, Familial Adenomatous Polyposis, Gardner Syndrome, Gastrectomy, and Endoscopy. Dr. Garg is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Kaiser Permanente Sunnybrook Medical Office - Gastroenterology

    9900 SE Sunnyside Rd, 
    Clackamas, OR 
     (1.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Noel Lee is a Gastroenterologist in Clackamas, Oregon. Dr. Lee is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Turcot Syndrome, Gardner Syndrome, Familial Adenomatous Polyposis, Gastrectomy, and Endoscopy. Dr. Lee is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    The Oregon Clinic Gastroenterology South - Oregon City

    1508 Division St, 
    Oregon City, OR 
     (3.6 miles away)
    Languages Spoken:
    English

    Amelie Tiritilli is a Gastroenterologist in Oregon City, Oregon. Dr. Tiritilli is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Familial Adenomatous Polyposis, Hemorrhoids, Diverticular Disease, Turcot Syndrome, and Colonoscopy.

    Experienced in Colonoscopy
    General Surgery
    Experienced in Colonoscopy
    General Surgery

    OHSU Hospital

    3181 SW Sam Jackson Park Rd, 
    Portland, OR 
     (8.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sandy Fang is a General Surgeon in Portland, Oregon. Dr. Fang is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Anal Cancer, Colorectal Cancer, Familial Colorectal Cancer, Ileostomy, and Ureteroscopy.

    Experienced in Colonoscopy
    General Surgery
    Experienced in Colonoscopy
    General Surgery

    OHSU Hospital

    3181 SW Sam Jackson Park Rd, 
    Portland, OR 
     (8.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Vassiliki Tsikitis is a General Surgeon in Portland, Oregon. Dr. Tsikitis is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Crohn's Disease, Familial Colorectal Cancer, Colorectal Cancer, Hernia Surgery, and Colonoscopy.

    Experienced in Colonoscopy
    Colorectal Surgery
    Experienced in Colonoscopy
    Colorectal Surgery

    OHSU Hospital

    3181 SW Sam Jackson Park Rd, 
    Portland, OR 
     (8.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Daniel Herzig is a Colorectal Surgeon in Portland, Oregon. Dr. Herzig is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Anal Cancer, Colorectal Cancer, Familial Colorectal Cancer, Hernia Surgery, and Colostomy.

    Experienced in Colonoscopy
    General Surgery
    Experienced in Colonoscopy
    General Surgery

    Northwest Minimally Invasive Surgery LLC

    5050 NE Hoyt St Ste 610, 
    Portland, OR 
     (8.5 miles away)
    Languages Spoken:
    English

    Carey Wickham is a General Surgeon in Portland, Oregon. Dr. Wickham is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Gastrointestinal Perforation, Rectal Prolapse, Hemorrhoids, Colostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy
    4805 Northeast Glisan Street, Suite 11N-1, 
    Portland, OR 
     (8.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Alison Conlin is an Oncologist in Portland, Oregon. Dr. Conlin is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Breast Cancer, Paget Disease of the Breast, Angiosarcoma, Endoscopy, and Tissue Biopsy. Dr. Conlin is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    19250 Southwest 90th Avenue, 
    Tualatin, OR 
     (9.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Ryan Childers is a Gastroenterologist in Tualatin, Oregon. Dr. Childers is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Ulcerative Colitis, Turcot Syndrome, Endoscopy, and Colonoscopy. Dr. Childers is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    19250 Southwest 90th Avenue, 
    Tualatin, OR 
     (9.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Paul Anderson is a Gastroenterologist in Tualatin, Oregon. Dr. Anderson is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Ulcerative Colitis, Gardner Syndrome, Colonoscopy, and Endoscopy. Dr. Anderson is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine
    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine
    19250 Southwest 90th Avenue, 
    Tualatin, OR 
     (9.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Monina Pascua is an Internal Medicine specialist and a Gastroenterologist in Tualatin, Oregon. Dr. Pascua is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Ulcerative Colitis, Familial Adenomatous Polyposis, Gardner Syndrome, Gastrectomy, and Endoscopy. Dr. Pascua is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine | Gastroenterology
    Experienced in Colonoscopy
    Internal Medicine | Gastroenterology
    19250 Southwest 90th Avenue, 
    Tualatin, OR 
     (9.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Zibing Woodward is an Internal Medicine specialist and a Gastroenterologist in Tualatin, Oregon. Dr. Woodward is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Familial Adenomatous Polyposis, Turcot Syndrome, Gardner Syndrome, Endoscopy, and Gastrectomy. Dr. Woodward is currently accepting new patients.

    Showing 1-20 of 63

    Last Updated: 02/22/2026

    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 Clackamas, OR?

    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 Clackamas, OR?

    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 Clackamas, OR?

    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 Clackamas, OR?

    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 Clackamas, OR?

    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 Clackamas, OR?

    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 Clackamas, OR?

    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 

    Read more about our Content Policy