The 20 Best Colonoscopy Doctors near Westminster, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 04/28/2026

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MediFind found 232 doctor with experience in Colonoscopy near Westminster, CA. Of these, 210 are Experienced, 20 are Advanced, 1 are Distinguished and 1 are Elite.

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

    UCI Health H.H. Chao Comprehensive Digestive Disease Center

    101 The City Dr S Bldg 22C, 
    Orange, CA 
     (6.8 miles away)
    Languages Spoken:
    English

    Jason Samarasena is a Gastroenterologist practicing medicine in Orange, California. Dr. Samarasena is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 53 other conditions, according to our data. His clinical expertise encompasses Barrett Esophagus, Jaundice, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine
    12665 Garden Grove Boulevard, Suite 503, 
    Garden Grove, CA 
     (3.4 miles away)
    Languages Spoken:
    English

    Chaewon Song is a primary care provider, practicing in Internal Medicine in Garden Grove, California. Dr. Song is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Osteomyelitis in Children, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Colorectal Surgery
    Experienced in Colonoscopy
    Colorectal Surgery

    Tam H. Le MD Inc.

    18225 Brookhurst St Ste 1, 
    Fountain Valley, CA 
     (4.0 miles away)
    Languages Spoken:
    English

    Tam Le is a Colorectal Surgeon practicing medicine in Fountain Valley, California. Dr. Le is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Hernia, Familial Colorectal Cancer, Colorectal Cancer, Hemorrhoidectomy, and Hernia Surgery.

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

    Long Phi Dang MD Inc

    7891 Westminster Blvd, 
    Westminster, CA 
     (0.1 miles away)
    Experience:
    33+ years
    Languages Spoken:
    English

    Long Dang is a Gastroenterologist practicing medicine in Westminster, California. He has been practicing medicine for over 33 years. Dr. Dang is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 57 other conditions, according to our data. His clinical expertise encompasses Chronic Erosive Gastritis, Gastritis, Gastrointestinal Bleeding, Gastrectomy, and Gastrostomy. Dr. Dang is board certified in American Board Of Gastroentrology.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Digestive And Liver Disease Specialists

    11922 Seacrest Dr, 
    Garden Grove, CA 
     (3.0 miles away)
    Experience:
    45+ years
    Languages Spoken:
    English

    Syam Gaddam is a Gastroenterologist practicing medicine in Garden Grove, California. He has been practicing medicine for over 45 years. Dr. Gaddam is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Hepatitis, Painful Swallowing, Swallowing Difficulty, Gastrostomy, and Gastrectomy. Dr. Gaddam is board certified in American Board Of Internal Medicine.

    Advanced in Colonoscopy
    Internal Medicine
    Advanced in Colonoscopy
    Internal Medicine

    House Call Medical Associates Inc.

    12865 Main St Ste 105, 
    Garden Grove, CA 
     (3.8 miles away)
    Languages Spoken:
    English

    Dat Nguyen is a primary care provider, practicing in Internal Medicine in Garden Grove, California. Dr. Nguyen 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 Sepsis, Stroke, Gastritis, Gastrostomy, and Endoscopy.

    Advanced in Colonoscopy
    Ophthalmology
    Advanced in Colonoscopy
    Ophthalmology

    Samir A Shah MD Professional Corp.

    18582 Main St, 
    Huntington Beach, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    Samir Shah is an Ophthalmologist practicing medicine in Huntington Beach, California. Dr. Shah is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Cataract, Dry Eye Syndrome, Cloudy Cornea, Colonoscopy, and Endoscopy.

    Distinguished in Colonoscopy
    Gastroenterology
    Distinguished in Colonoscopy
    Gastroenterology

    Long Beach Gastroenterology Associates

    3833 Worsham Ave Ste 300, 
    Long Beach, CA 
     (8.3 miles away)
    Languages Spoken:
    English

    Mohammed Ali is a Gastroenterologist practicing medicine in Long Beach, California. Dr. Ali is rated as a Distinguished provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Eosinophilic Colitis, Gastroesophageal Reflux Disease (GERD), Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Pulmonary Medicine | Sleep Medicine
    Experienced in Colonoscopy
    Pulmonary Medicine | Sleep Medicine

    Imran Sharief, MD Private Practice

    1901 E 4th St, 
    Santa Ana, CA 
     (8.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    I seek to provide the most complete care to my patients in a caring and respectful way. Dr. Sharief is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Atypical Pneumonia, Hospital-Acquired Pneumonia, Pneumonia, Obstructive Sleep Apnea, and Colonoscopy. Dr. Sharief is board certified in Internal Medicine (Sub: Sleep Medicine). Dr. Sharief is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Timothy C. Simmons, MD Private Practice

    3816 Woodruff Ave, Ste 411, 
    Long Beach, CA 
     (8.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Our goal is to provide care that is second to none via physicians and staff who are knowledgeable in all aspects of gastroenterology. We believe that this care be delivered through compassion, confidentiality, and understanding of your need for service regardless of race, religion, or economic background. Dr. Simmons is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Esophageal Varices, Esophagitis, Gastrectomy, and Gastrostomy. Dr. Simmons is board certified in Internal Medicine and Internal Medicine (Sub: Gastroenterology). Dr. Simmons is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine | Pulmonary Medicine
    Experienced in Colonoscopy
    Internal Medicine | Pulmonary Medicine

    Pathway Medical Group

    7955 Westminster Blvd, 
    Westminster, CA 
     (0.1 miles away)
    Experience:
    35+ years
    Languages Spoken:
    English

    Khaled Chan is an Internal Medicine specialist and a Pulmonary Medicine provider practicing medicine in Westminster, California. He has been practicing medicine for over 35 years. Dr. Chan is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Pneumonia, Hospital-Acquired Pneumonia, Atypical Pneumonia, Gastrostomy, and Endoscopy. Dr. Chan is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Vivian Nguyen MD Professional Corp.

    8419 Westminster Blvd, 
    Westminster, CA 
     (0.5 miles away)
    Languages Spoken:
    English

    Vivian Nguyen is an Internal Medicine provider practicing medicine in Westminster, California. Dr. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Spontaneous Coronary Artery Dissection (SCAD), Urea Cycle Disorders (UCD), Chronic Inflammatory Response Syndrome (CIRS), Hernia Surgery, and Bone Marrow Aspiration.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Thuan H. Vo MD A Medical Corp.

    9024 Bolsa Ave, 
    Westminster, CA 
     (1.5 miles away)
    Languages Spoken:
    English

    Thuan Vo is a primary care provider, practicing in Internal Medicine in Westminster, California. Dr. Vo is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Parinaud Oculoglandular Syndrome, Tracheitis, Sitosterolemia, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Holistic Medicine
    Experienced in Colonoscopy
    Holistic Medicine
    15581 Brookhurst St, 
    Westminster, CA 
     (2.5 miles away)
    Languages Spoken:
    English

    Minh Nguyen is a Holistic Medicine provider practicing medicine in Westminster, California. Ms. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Gallbladder Disease, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Choice Care Inc.

    12495 Valley View St, 
    Garden Grove, CA 
     (2.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jonathan Pourmorady is a Gastroenterologist practicing medicine in Garden Grove, California. Dr. Pourmorady 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 Gastrointestinal Bleeding, Angiodysplasia of the Colon, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Ali Fouladi M.D. Inc.

    12665 Garden Grove Blvd Ste 502, 
    Garden Grove, CA 
     (3.4 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English

    Jonathan Warnelo is an Internal Medicine provider practicing medicine in Garden Grove, California. He has been practicing medicine for over 10 years. Dr. Warnelo is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Chronic Inflammatory Response Syndrome (CIRS), Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Office

    17692 Beach Blvd Ste 302, 
    Huntington Beach, CA 
     (3.7 miles away)
    Languages Spoken:
    English

    Meera Sohail is a primary care provider, practicing in Internal Medicine in Huntington Beach, California. Dr. Sohail is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 18 other conditions, according to our data. Her clinical expertise encompasses Schizoaffective Disorder, Apoplexy, Heart Attack, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Hospital Medicine
    Experienced in Colonoscopy
    Hospital Medicine

    Tam K Nguyen Medical Professional Corp.

    12221 Brookhurst St Ste 100, 
    Garden Grove, CA 
     (3.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Tam Nguyen is a primary care provider, practicing in Hospital Medicine in Garden Grove, California. Dr. Nguyen 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, Type 2 Diabetes (T2D), Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Hospital Medicine
    Experienced in Colonoscopy
    Hospital Medicine

    Office

    17360 Brookhurst St, 
    Fountain Valley, CA 
     (3.9 miles away)
    Languages Spoken:
    English

    Ellen Gim is a primary care provider, practicing in Hospital Medicine in Fountain Valley, California. Dr. Gim is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Cellulitis, Stroke, Sepsis, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Hospital Medicine
    Experienced in Colonoscopy
    Hospital Medicine

    Office

    17360 Brookhurst St, 
    Fountain Valley, CA 
     (3.9 miles away)
    Languages Spoken:
    English

    Elizabeth Tsai is a primary care provider, practicing in Hospital Medicine in Fountain Valley, California. Dr. Tsai 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 Cellulitis, Sepsis, Ogilvie Syndrome, Gastrostomy, and Pacemaker Implantation.

    Showing 1-20 of 232

    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 Westminster, 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 Westminster, 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 Westminster, 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 Westminster, 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 Westminster, 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 Westminster, 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 Westminster, 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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