The 20 Best Colonoscopy Doctors near Fontana, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 04/28/2026

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MediFind found 97 doctor with experience in Colonoscopy near Fontana, CA. Of these, 94 are Experienced and 3 are Advanced.

Location
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97 providers found
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    San Bernardino Gastroenterology Associates

    2006 N Riverside Ave, Ste B, 
    Rialto, CA 
     (4.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    George Saffouri is a Gastroenterologist practicing medicine in Rialto, California. Dr. Saffouri 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 Hemorrhoids, Diverticular Disease, Chronic Erosive Gastritis, Endoscopy, and Colonoscopy. Dr. Saffouri is board certified in Internal Medicine and Internal Medicine (Sub: Gastroenterology). Dr. Saffouri is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Fontana Medical Center

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Syed Yusuf is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Yusuf is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Gastrointestinal Bleeding, Pneumonia, Atypical Pneumonia, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Kaiser Permanente Fontana Medical Center

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Ashley Alexander is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Alexander is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Sepsis, Hereditary Pancreatitis, and Colonoscopy.

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

    Kaiser Permanente Fontana Medical Center

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English

    Hoveda Mufti is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Mufti 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 Apoplexy, Heart Attack, Sepsis, Thyroidectomy, and Pacemaker Implantation.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Kaiser Permanente Fontana Medical Center

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English

    Elnaz Rakhshan is a primary care provider, practicing in Internal Medicine in Fontana, California. She has been practicing medicine for over 18 years. Dr. Rakhshan is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Sepsis, Gastrointestinal Bleeding, Pneumonia, Endoscopy, and Atherectomy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Office

    2006 N Riverside Ave Ste B, 
    Rialto, CA 
     (4.8 miles away)
    Languages Spoken:
    English

    Carlos Buitrago is a Gastroenterologist practicing medicine in Rialto, California. Dr. Buitrago is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Pancreatic Pseudocyst, Acute Pancreatitis, Hereditary Pancreatitis, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Andro Sharobiem, MD

    3634 Elizabeth St, 
    Riverside, CA 
     (9.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Andro Sharobiem is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Sharobiem is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 59 other conditions, according to our data. His clinical expertise encompasses Sepsis, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Gastrostomy, and Colonoscopy. Dr. Sharobiem is currently accepting new patients.

    Experienced in Colonoscopy
    General Surgery
    Experienced in Colonoscopy
    General Surgery

    Osorio, Ruben, M.D., Inc.

    399 E Highland Ave, 
    San Bernardino, CA 
     (9.5 miles away)
    Experience:
    33+ years
    Languages Spoken:
    English

    Ruben Osorio is a General Surgeon practicing medicine in San Bernardino, California. He has been practicing medicine for over 33 years. Dr. Osorio 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 Gastrointestinal Perforation, Ogilvie Syndrome, Cholecystitis, Hernia Surgery, and Gastrostomy. Dr. Osorio is board certified in American Board Of Surgery.

    Experienced in Colonoscopy
    Rheumatology
    Experienced in Colonoscopy
    Rheumatology

    Regents Of The Univ. Of California

    3390 University Ave Ste 100, 
    Riverside, CA 
     (7.6 miles away)
    Languages Spoken:
    English

    Naveen Raja is a Rheumatologist practicing medicine in Riverside, California. Dr. Raja is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Fibromyalgia, Rheumatoid Arthritis (RA), Psoriatic Arthritis, Psoriasis, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Carlos R. Vigil DO A Professional Corp.

    7974 Haven Ave Ste 210, 
    Rancho Cucamonga, CA 
     (8.2 miles away)
    Languages Spoken:
    English

    Hussein Abidali is a Gastroenterologist practicing medicine in Rancho Cucamonga, California. Dr. Abidali is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 44 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Hiatal Hernia, Congenital Diaphragmatic Hernia, Endoscopy, and Gastrostomy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Derek Nguyen Md, Inc.

    4435 Brockton Ave, 
    Riverside, CA 
     (8.4 miles away)
    Experience:
    25+ years
    Languages Spoken:
    English
    Offers Telehealth

    Derek Nguyen is an Internal Medicine provider practicing medicine in Riverside, California. He has been practicing medicine for over 25 years. 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 End-Stage Renal Disease (ESRD), Cellulitis, Spontaneous Coronary Artery Dissection (SCAD), Gastrostomy, and Endoscopy. Dr. Nguyen is board certified in American Board Of Family Medicine.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Mina Mikhail MD Inc.

    4500 Brockton Ave, 
    Riverside, CA 
     (8.5 miles away)
    Experience:
    48+ years
    Languages Spoken:
    English

    Mina Mikhail is a primary care provider, practicing in Internal Medicine in Riverside, California. He has been practicing medicine for over 48 years. Dr. Mikhail 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 Cellulitis, End-Stage Renal Disease (ESRD), Type 2 Diabetes (T2D), Colonoscopy, and Gastrostomy. Dr. Mikhail is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Alertive Healthcare Medical Group Apc

    4500 Brockton Ave, Suite 305, 
    Riverside, CA 
     (8.5 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Yas Casey is a primary care provider, practicing in Internal Medicine in Riverside, California. He has been practicing medicine for over 17 years. Dr. Casey 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 Sepsis, Interstitial Nephritis, Perianal Streptococcal Cellulitis, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Geriatrics | Internal Medicine
    Experienced in Colonoscopy
    Geriatrics | Internal Medicine

    Alertive Healthcare Medical Group Apc

    4500 Brockton Ave, Suite 305, 
    Riverside, CA 
     (8.5 miles away)
    Languages Spoken:
    English

    Sahar Eivaz-Mohammadi is a primary care provider, practicing in Geriatrics and Internal Medicine in Riverside, California. Dr. Eivaz-Mohammadi 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 Strongyloidiasis, Rhabditida Infections, Apoplexy, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Riverside Community Hospital

    4445 Magnolia Ave, 
    Riverside, CA 
     (8.6 miles away)
    Languages Spoken:
    English

    Pejman Solaimani is a Gastroenterologist practicing medicine in Riverside, California. Dr. Solaimani 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 Hemorrhoids, Hiatal Hernia, Congenital Diaphragmatic Hernia, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Riverside Community Hospital

    4445 Magnolia Ave, 
    Riverside, CA 
     (8.6 miles away)
    Languages Spoken:
    English

    Humera Rana is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Rana is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Tonsillitis, Asthma, Sepsis, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Riverside Community Hospital

    4445 Magnolia Ave, 
    Riverside, CA 
     (8.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mohammad Kharazmi is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Kharazmi 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 Kienbock's Disease, Osteonecrosis, Peptic Ulcer, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Riverside Community Hospital

    4445 Magnolia Ave, 
    Riverside, CA 
     (8.6 miles away)
    Languages Spoken:
    English

    Rajesh Gulati is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Gulati is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Apoplexy, Heart Attack, Sepsis, Peptic Ulcer, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Riverside Community Hospital

    4445 Magnolia Ave, 
    Riverside, CA 
     (8.6 miles away)
    Languages Spoken:
    English

    Gregory Shimizu is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Shimizu is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Sepsis, Heart Attack, Apoplexy, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Riverside Family Physicians A Professional Medical Corp.

    4310 Orange St, 
    Riverside, CA 
     (8.7 miles away)
    Experience:
    14+ years
    Languages Spoken:
    English

    Benjamin Mahdi is a primary care provider, practicing in Family Medicine in Riverside, California. He has been practicing medicine for over 14 years. Dr. Mahdi 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 Myelodysplastic Syndrome (MDS), Type 2 Diabetes (T2D), Familial Hypertension, Bone Marrow Aspiration, and Endoscopy. Dr. Mahdi is board certified in American Board Of Family Medicine.

    Showing 1-20 of 97

    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 Fontana, 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 Fontana, 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 Fontana, 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 Fontana, 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 Fontana, 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 Fontana, 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 Fontana, 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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