The 20 Best Colonoscopy Doctors near claremont, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 09/26/2026

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MediFind found 117 doctor with experience in Colonoscopy near claremont, CA. Of these, 102 are Experienced, 14 are Advanced and 1 are Distinguished.

Location
LocationClose
117 providers found
    Advanced in Colonoscopy
    Advanced in Colonoscopy
    Referral may be required

    Ryotaro Nakamura, M.D.

    1500 Duarte Rd, 
    Duarte, CA 
     (14.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ryotaro Nakamura is an Oncologist practicing medicine in Duarte, California. Dr. Nakamura is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Chronic Graft Versus Host Disease (cGvHD), Myelodysplastic Syndrome (MDS), Acute Myeloid Leukemia (AML), Bone Marrow Aspiration, and Colonoscopy.

    Advanced in Colonoscopy
    Internal Medicine
    Advanced in Colonoscopy
    Internal Medicine

    Pomona Valley Hospital Medical Center

    1798 N Garey Ave, 
    Pomona, CA 
     (2.2 miles away)
    Languages Spoken:
    English

    Krishan Malhotra is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Malhotra 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 Gastrointestinal Bleeding, Diverticular Disease, Esophageal Varices, Gastrostomy, and Endoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    Referral may be required

    City Of Hope's Helford Clinical Research Hospital

    1500 Duarte Rd, 
    Duarte, CA 
     (14.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    James Lin is a Gastroenterologist practicing medicine in Duarte, California. Dr. Lin is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 58 other conditions, according to our data. His clinical expertise encompasses Bile Duct Stricture, Bile Duct Obstruction, Cholestasis, Colonoscopy, and Gastrectomy.

    Learn about our expert tiers
    Experienced in Colonoscopy
    Hematology | Oncology
    Experienced in Colonoscopy
    Hematology | Oncology
    Referral may be required

    City Of Hope Comprehensive Cancer Center-Duarte

    1500 Duarte Rd, 
    Duarte, CA 
     (14.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Stephen Forman is a Hematologist and an Oncologist practicing medicine in Duarte, California. Dr. Forman is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 55 other conditions, according to our data. His clinical expertise encompasses Non-Hodgkin Lymphoma, Acute Myeloid Leukemia (AML), Graft Versus Host Disease (GvHD), Bone Marrow Transplant, and Bone Marrow Aspiration.

    Experienced in Colonoscopy
    Experienced in Colonoscopy
    Referral may be required

    City Of Hope Comprehensive Cancer Center-Duarte

    1500 Duarte Rd, 
    Duarte, CA 
     (14.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Joanne Mortimer is an Oncologist practicing medicine in Duarte, California. Dr. Mortimer is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Triple-Negative Breast Cancer, Inflammatory Breast Cancer, HER-2 Positive Breast Cancer, and Colonoscopy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy
    Referral may be required

    City Of Hope - Duarte Main Campus

    1500 E Duarte Rd, 
    Duarte, CA 
     (14.7 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Alex Herrera is an Oncologist practicing medicine in Duarte, CA. He has been practicing medicine for over 17 years. Dr. Herrera is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Hodgkin Lymphoma, Classical Hodgkin Lymphoma, Diffuse Large B-Cell Lymphoma (DLBCL), Bone Marrow Aspiration, and Colonoscopy. Dr. Herrera is board certified in American Board Of Internal Medicine, Hematology and American Board Of Internal Medicine, Oncology.

    Experienced in Colonoscopy
    Experienced in Colonoscopy
    Referral may be required

    Chaparral Medical Group Inc.

    138 Harvard Ave, 
    Claremont, CA 
     (0.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Hla Maung-Hwang is a Nephrologist practicing medicine in Claremont, California. Dr. Maung-Hwang is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Acute Kidney Failure, End-Stage Renal Disease (ESRD), Necrosis, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Foothill Accountable Care Medical Group Inc.

    840 Towne Center Dr, 
    Pomona, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Lay Tun is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Tun is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Sepsis, Hepatitis, Apoplexy, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Foothill Accountable Care Medical Group Inc.

    840 Towne Center Dr, 
    Pomona, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Omied Samiee is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Samiee is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Sepsis, Gastrointestinal Bleeding, Peptic Ulcer, Gastrostomy, and Endoscopy.

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

    Office

    210 W Bonita Ave Ste 140, 
    Pomona, CA 
     (1.4 miles away)
    Languages Spoken:
    English

    Kenneth Lee is a Gastroenterologist practicing medicine in Pomona, California. Dr. Lee is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Hepatitis, Visceromegaly, Enlarged Liver, Endoscopy, and Gastrectomy.

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

    Our Family Medical Group

    1866 N Orange Grove Ave Ste 104, 
    Pomona, CA 
     (1.4 miles away)
    Languages Spoken:
    English

    Nischita Merla is a Gastroenterologist practicing medicine in Pomona, California. Dr. Merla is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 36 other conditions, according to our data. Her clinical expertise encompasses Attenuated Familial Adenomatous Polyposis, Cronkhite-Canada Disease, Juvenile Polyposis Syndrome, Endoscopy, and Gastrostomy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Vinod Kumar Garg MD Inc.

    250 W Bonita Ave Ste 250, 
    Pomona, CA 
     (1.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jagtar Dhadwal is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Dhadwal 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 End-Stage Renal Disease (ESRD), Sepsis, Pneumonia, Gastrostomy, and Endoscopy.

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

    Sympathy Home Health Care Inc

    1818 N Orange Grove Ave Ste 202, 
    Pomona, CA 
     (1.4 miles away)
    Languages Spoken:
    English

    Subhash Varshney is a Pulmonary Medicine provider practicing medicine in Pomona, California. Dr. Varshney is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Pneumonia, Gallbladder Disease, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Office

    1818 N Orange Grove Ave Ste 302, 
    Pomona, CA 
     (1.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Wilbert Tsai is a primary care provider, practicing in Family Medicine in Pomona, California. Dr. Tsai is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Essential Thrombocythemia, Sepsis, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy
    Referral may be required

    J.Singh D.O. Inc

    4959 Palo Verde St Ste 206A-5, 
    Montclair, CA 
     (1.7 miles away)
    Languages Spoken:
    English

    Jhujhar Singh is a Geriatrics provider practicing medicine in Montclair, California. Dr. Singh 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 Sepsis, Pneumonia, Necrosis, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Nagasamudra Ashok, M.D.

    5000 San Bernardino St, 
    Montclair, CA 
     (1.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Anika Muthiah is a primary care provider, practicing in Family Medicine in Montclair, California. Dr. Muthiah is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Sepsis, Peptic Ulcer, Necrosis, Acute Tubular Necrosis, and Colonoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Montclair Hospital Medical Center

    5000 San Bernardino St, 
    Montclair, CA 
     (1.8 miles away)
    Languages Spoken:
    English

    David Nguyen is a primary care provider, practicing in Family Medicine in Montclair, California. Dr. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Sepsis, Anemia, Retroperitoneal Inflammation, Bladder Reconstruction, and Thymectomy.

    Experienced in Colonoscopy
    General Surgery | Colorectal Surgery
    Experienced in Colonoscopy
    General Surgery | Colorectal Surgery
    Referral may be required

    Anthony S. Oh, MD A Medical Corporation

    4950 San Bernardino St, 
    Montclair, CA 
     (1.8 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients

    Jared Wong is a General Surgeon and a Colorectal Surgeon practicing medicine in Montclair, California. He has been practicing medicine for over 17 years. Dr. Wong is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Anal Fissure, Familial Colorectal Cancer, Hemorrhoidectomy, and Colonoscopy. Dr. Wong is board certified in American Board Of Colon & Rectal Surgery. Dr. Wong is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Platinum Digestive Health

    250 W Bonita Ave, 
    Pomona, CA 
     (1.8 miles away)
    Languages Spoken:
    English

    Bhaveshkumar Patel is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Patel is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 67 other conditions, according to our data. His clinical expertise encompasses Painful Swallowing, Swallowing Difficulty, Bile Duct Obstruction, Endoscopy, and Gastrostomy. Dr. Patel is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Lally Medical Group A Professional Corporation

    5050 San Bernardino St, 
    Montclair, CA 
     (1.9 miles away)
    Languages Spoken:
    English

    James Lally is a primary care provider, practicing in Family Medicine in Montclair, California. Dr. Lally is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD), Costochondritis, Tietz Syndrome, Endoscopy, and Hip Replacement.

    Showing 1-20 of 117

    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 claremont, CA?

    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 claremont, CA?

    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 claremont, CA?

    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 claremont, CA?

    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 claremont, CA?

    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 claremont, CA?

    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 claremont, CA?

    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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