The 20 Best Colonoscopy Doctors near Glendora, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 04/28/2026

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MediFind found 164 doctor with experience in Colonoscopy near Glendora, CA. Of these, 141 are Experienced, 22 are Advanced and 1 are Distinguished.

Location
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164 providers found
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine

    Genesis Healthcare Partners

    522 W Foothill Blvd, 
    Glendora, CA 
     (0.5 miles away)
    Experience:
    23+ years
    Languages Spoken:
    English

    James Kao is an Internal Medicine specialist and a Gastroenterologist in Glendora, California. Dr. Kao has been practicing medicine for over 23 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Indigestion, Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Colonoscopy, and Gastrostomy.

    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Offers Telehealth

    Ankush Sharma is an Internal Medicine specialist and a Gastroenterologist in Glendora, California. Dr. Sharma has been practicing medicine for over 18 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Gastrointestinal Bleeding, Swallowing Difficulty, Painful Swallowing, Colonoscopy, and Gastrectomy.

    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Experience:
    27+ years
    Languages Spoken:
    English

    Sartaj Arora is an Internal Medicine specialist and a Gastroenterologist in Glendora, California. Dr. Arora has been practicing medicine for over 27 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Swallowing Difficulty, Painful Swallowing, Gastrointestinal Bleeding, Gastrectomy, and Gastrostomy.

    Learn about our expert tiers
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Experience:
    23+ years
    Languages Spoken:
    English
    Offers Telehealth

    Patrick Truong is an Internal Medicine specialist and a Gastroenterologist in Glendora, California. Dr. Truong has been practicing medicine for over 23 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Painful Swallowing, Swallowing Difficulty, Gastrointestinal Bleeding, Gastrectomy, and Gastrostomy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Boston Medical And Surgical Dermatology

    247 W San Bernardino Rd, 
    Covina, CA 
     (3.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Shahnawaz Jaffer is a Gastroenterologist in Covina, California. Dr. Jaffer is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are VIPoma, Diverticular Disease, Esophagitis, Colonoscopy, and Gastrectomy.

    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine

    Citrus Valley Gastroenterology A California Medical Corporation

    500 W San Bernardino Rd, 
    Covina, CA 
     (3.7 miles away)
    Experience:
    41+ years
    Languages Spoken:
    English

    Osama Sidhom is an Internal Medicine specialist and a Gastroenterologist in Covina, California. Dr. Sidhom has been practicing medicine for over 41 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Swallowing Difficulty, Painful Swallowing, Gastrointestinal Bleeding, Gastrostomy, and Gastrectomy.

    Distinguished in Colonoscopy
    Gastroenterology
    Distinguished in Colonoscopy
    Gastroenterology

    Trilokesh Kidambi, M.D.

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

    Trilokesh Kidambi is a Gastroenterologist in Duarte, California. Dr. Kidambi is rated as a Distinguished provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Familial Colorectal Cancer, Colorectal Cancer, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Zhi-Wen Lu, MD Inc.

    250 S Grand Ave, 
    Glendora, CA 
     (0.4 miles away)
    Experience:
    37+ years
    Languages Spoken:
    English

    Zhi-wen Lu is a primary care provider, practicing in Internal Medicine in Glendora, California. Dr. Lu has been practicing medicine for over 37 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Shingles, Low Blood Pressure, Type 2 Diabetes (T2D), Jock Itch, and Colonoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Emanate Health Foothill Presbyterian Hospital

    250 S Grand Ave, 
    Glendora, CA 
     (0.4 miles away)
    Languages Spoken:
    English

    Chase Atckison is a primary care provider, practicing in Family Medicine in Glendora, California. Dr. Atckison is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Sepsis, Peptic Ulcer, Gastrointestinal Bleeding, Necrosis, and Colonoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Krunal Mehta, MD

    130 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Experience:
    25+ years
    Languages Spoken:
    English
    Offers Telehealth

    Krunal Mehta is a primary care provider, practicing in Family Medicine in Glendora, California. Dr. Mehta has been practicing medicine for over 25 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Sepsis, Gastroparesis, Viral Gastroenteritis, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine
    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Experience:
    15+ years
    Languages Spoken:
    English
    Offers Telehealth

    Adam Snyder is an Internal Medicine specialist and a Gastroenterologist in Glendora, California. Dr. Snyder has been practicing medicine for over 15 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Swallowing Difficulty, Painful Swallowing, Visceromegaly, Gastrostomy, and Gastrectomy.

    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine
    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine

    Citrus Valley Gastroenterology A California Medical Corporation

    415 W Route 66, 
    Glendora, CA 
     (0.6 miles away)
    Experience:
    54+ years
    Languages Spoken:
    English

    George Ferenczi is an Internal Medicine specialist and a Gastroenterologist in Glendora, California. Dr. Ferenczi has been practicing medicine for over 54 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Hemorrhoids, Diverticular Disease, Colonoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy

    William Gillespie And Associates Inc.

    510 S Grand Ave Ste 200, 
    Glendora, CA 
     (2.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    William Gillespie is a Psychiatrist in Glendora, California. Dr. Gillespie is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Schizophrenia, Seasonal Affective Disorder (SAD), Major Depression, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Sabah Kadhium, MD

    1334 W Covina Blvd, 
    San Dimas, CA 
     (3.3 miles away)
    Experience:
    33+ years
    Languages Spoken:
    English
    Offers Telehealth

    Sabah Kadhium is a primary care provider, practicing in Family Medicine in San Dimas, California. Dr. Kadhium has been practicing medicine for over 33 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Urinary Tract Infection in Children, Sepsis, Acute Kidney Failure, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Kuruganti R. Reddy M.D.

    530 W Badillo St Ste B, 
    Covina, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Pawan Vermani is an Internal Medicine provider in Covina, California. Dr. Vermani is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Hospital-Acquired Pneumonia, Atypical Pneumonia, Pneumonia, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Habib A. Ismail M.D. Inc.

    1330 W Covina Blvd Ste 103, 
    San Dimas, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Younis Ali is a primary care provider, practicing in Internal Medicine in San Dimas, California. Dr. Ali is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Sepsis, Stroke, Pneumonia, Colonoscopy, and Gastrostomy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Office

    1330 W Covina Blvd Ste 206, 
    San Dimas, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Zouhair Hakak is a primary care provider, practicing in Internal Medicine in San Dimas, California. Dr. Hakak is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Diverticular Disease, Sepsis, Generalized Tonic-Clonic Seizure, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    General Surgery | Colorectal Surgery
    Experienced in Colonoscopy
    General Surgery | Colorectal Surgery

    Anthony S. Oh, MD A Medical Corporation

    315 N 3rd Ave, 
    Covina, CA 
     (3.6 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Jared Wong is a General Surgeon and a Colorectal Surgeon in Covina, California. Dr. Wong 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 Hemorrhoids, Anal Fissure, Familial Colorectal Cancer, Hemorrhoidectomy, and Colonoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Emanate Health Inter-Community Hospital

    210 W San Bernardino Rd, 
    Covina, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Naveen Dhiman is a primary care provider, practicing in Family Medicine in Covina, California. Dr. Dhiman is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gastrointestinal Bleeding, Sepsis, Gangrene, Colonoscopy, and Gastrostomy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Emanate Health Inter-Community Hospital

    210 W San Bernardino Rd, 
    Covina, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Yanfei Chen is a primary care provider, practicing in Internal Medicine in Covina, California. Dr. Chen is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Multisystem Inflammatory Syndrome in Children (MIS-C), COVID-19, Rabson-Mendenhall Syndrome, Colonoscopy, and Ureteroscopy.

    Showing 1-20 of 164

    Last Updated: 04/28/2026

    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 Glendora, 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 Glendora, 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 Glendora, 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 Glendora, 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 Glendora, 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 Glendora, 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 Glendora, 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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