The 20 Best Diverticular Disease Doctors Near Me in Fontana, CA

Find the Top Diverticular Disease Experts and Specialists

Last Updated: 04/28/2026

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

MediFind found 183 doctor with experience in Diverticular Disease near Fontana, CA. Of these, 150 are Experienced, 28 are Advanced and 5 are Distinguished.

Location
LocationClose
183 providers found
    Advanced in Diverticular Disease
    Gastroenterology
    Advanced in Diverticular Disease
    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 Advanced provider by MediFind in the treatment of Diverticular Disease. 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.

    Advanced in Diverticular Disease
    Radiology | Interventional Radiology
    Advanced in Diverticular Disease
    Radiology | Interventional Radiology

    Fontana Medical Center

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

    Jeffrey Karst is a Radiologist and an Interventional Radiologist practicing medicine in Fontana, California. Dr. Karst is rated as an Advanced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Small Cell Lung Cancer (SCLC), Lung Cancer, Ascites, Stent Placement, and Transmyocardial Revascularization. Dr. Karst is currently accepting new patients.

    Experienced in Diverticular Disease
    Pediatric Radiology
    Experienced in Diverticular Disease
    Pediatric Radiology

    Kaiser Permanente Fontana Medical Center

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

    Raphael Alford is a Pediatric Radiologist practicing medicine in Fontana, California. Dr. Alford is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Visceromegaly, Ascites, Gallbladder Disease, and Pleural Effusion.

    Learn about our expert tiers
    Experienced in Diverticular Disease
    Colorectal Surgery
    Experienced in Diverticular Disease
    Colorectal Surgery

    Fontana Medical Center

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

    Robert Yuhan is a Colorectal Surgeon practicing medicine in Fontana, California. Dr. Yuhan is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. His clinical expertise encompasses Retroperitoneal Inflammation, Gallbladder Disease, Ogilvie Syndrome, Familial Colorectal Cancer, and Colostomy. Dr. Yuhan is currently accepting new patients.

    Experienced in Diverticular Disease
    General Surgery | Colorectal Surgery
    Experienced in Diverticular Disease
    General Surgery | Colorectal Surgery

    Fontana Medical Center

    9961 Sierra Avenue, 
    Fontana, CA 
     (1.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Joseph Ruan is a General Surgeon and a Colorectal Surgeon practicing medicine in Fontana, California. Dr. Ruan is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. His clinical expertise encompasses Rectal Prolapse, Retroperitoneal Inflammation, Ogilvie Syndrome, Familial Colorectal Cancer, and Colostomy. Dr. Ruan is currently accepting new patients.

    Experienced in Diverticular Disease
    Radiology
    Experienced in Diverticular Disease
    Radiology

    Kaiser Permanente Fontana Medical Center

    9961 Sierra Ave # 1, 
    Fontana, CA 
     (1.7 miles away)
    Languages Spoken:
    English

    David Chang is a Radiologist practicing medicine in Fontana, California. Dr. Chang is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. His clinical expertise encompasses Progressive Familial Intrahepatic Cholestasis Type 1, Progressive Familial Intrahepatic Cholestasis Type 2, Progressive Familial Intrahepatic Cholestasis Type 3, and Visceromegaly.

    Experienced in Diverticular Disease
    Radiology
    Experienced in Diverticular Disease
    Radiology

    Arrowhead Regional Medical Center

    400 N Pepper Ave, 
    Colton, CA 
     (5.0 miles away)
    Languages Spoken:
    English

    James Kim is a Radiologist practicing medicine in Colton, California. Dr. Kim is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Gallbladder Disease, Vertigo, Visceromegaly, Pleurisy, and Bone Marrow Aspiration.

    Experienced in Diverticular Disease
    Experienced in Diverticular Disease

    Arrowhead Regional Medical Center

    400 N Pepper Ave, 
    Colton, CA 
     (5.0 miles away)
    Languages Spoken:
    English

    David Underwood is a Radiologist practicing medicine in Colton, California. Dr. Underwood is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Pleurisy, Pleural Effusion, Bronchogenic Cyst, Bone Marrow Aspiration, and Endoscopy.

    Experienced in Diverticular Disease
    Radiology
    Experienced in Diverticular Disease
    Radiology

    Arrowhead Regional Medical Center

    400 N Pepper Ave, 
    Colton, CA 
     (5.0 miles away)
    Languages Spoken:
    English

    Ha Le is a Radiologist practicing medicine in Colton, California. Dr. Le is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses CAPOS Syndrome, Gallbladder Disease, Aseptic and Alopecic Nodules of Scalp (AANS), and Stroke.

    Advanced in Diverticular Disease
    Gastroenterology
    Advanced in Diverticular Disease
    Gastroenterology

    Andrea S Tieng MD, Inc

    10801 Foothill Blvd, Ste 106, 
    Rancho Cucamonga, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Dr. Andrea Tieng was born and raised in New York City. She graduated Summa Cum Laude from the City University of New York and completed her medical degree at the State University of New York Health Science Center at the SUNY Downstate College of Medicine in Brooklyn, New York.Her internship and residency in Internal Medicine was completed at the Albert Einstein College of Medicine at Long Island Jewish Medical Center in New Hyde Park, New York, where she also fulfilled her Gastroenterology and Hepatology Fellowship.Board Certified by the American Board of Internal Medicine, Dr. Tieng is licensed to practice in both California and New York. She is a member of the American College of Gastroenterology and the American Gastroenterology Association.Prior to founding her own practice in Redlands and San Bernardino, Dr. Tieng worked as a private gastroenterologist at Cedars-Sinai Medical Center in Los Angeles.Dr. Tieng specializes in providing sensitive and compassionate care to women, and delivers personalized care to all patients 18 years and older. Dr. Tieng is a board certified physician who treats patients with gastrointestinal illnesses and liver diseases. She utilizes innovative technology to perform diagnostic and therapeutic procedures of the gastrointestinal tract, including colonoscopy and upper endoscopy. Dr. Tieng is rated as an Advanced provider by MediFind in the treatment of Diverticular Disease. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Diverticular Disease, Familial Adenomatous Polyposis, Gastritis, Gastrectomy, and Endoscopy. Dr. Tieng is board certified in Internal Medicine. Dr. Tieng is currently accepting new patients.

    Experienced in Diverticular Disease
    Gastroenterology
    Experienced in Diverticular Disease
    Gastroenterology

    San Bernardino Gastroenterology Associates, Inc.

    2006 N Riverside Ave, 
    Rialto, CA 
     (4.8 miles away)
    Experience:
    12+ years
    Languages Spoken:
    English

    Victor Guharoy is a Gastroenterologist practicing medicine in Rialto, California. He has been practicing medicine for over 12 years. Dr. Guharoy is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Hemorrhoids, Diverticular Disease, Acute Pancreatitis, and Gastrectomy. Dr. Guharoy is board certified in American Board Of Internal Medicine.

    Advanced in Diverticular Disease
    Radiology
    Advanced in Diverticular Disease
    Radiology

    Office

    8599 Haven Ave Ste 300, 
    Rancho Cucamonga, CA 
     (8.2 miles away)
    Languages Spoken:
    English

    Thomas Lin is a Radiologist practicing medicine in Rancho Cucamonga, California. Dr. Lin is rated as an Advanced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 39 other conditions, according to our data. His clinical expertise encompasses Gallbladder Disease, Visceromegaly, Non-Alcoholic Fatty Liver Disease, and Hepatocerebral Degeneration.

    Advanced in Diverticular Disease
    Advanced in Diverticular Disease

    Riverside Community Hospital

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

    Donald Massee is a Radiologist practicing medicine in Riverside, California. Dr. Massee is rated as an Advanced provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Non-Alcoholic Fatty Liver Disease, Visceromegaly, Gallbladder Disease, and Angiomyoma.

    Distinguished in Diverticular Disease
    Radiology
    Distinguished in Diverticular Disease
    Radiology

    Online Radiology Medical Group Inc.

    1770 Iowa Ave Ste 280, 
    Riverside, CA 
     (10.5 miles away)
    Languages Spoken:
    English

    Jason Lue is a Radiologist practicing medicine in Riverside, California. Dr. Lue is rated as a Distinguished provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Pleurisy, Pleural Effusion, Biliary Dyskinesia, Gallbladder Disease, and Bone Marrow Aspiration.

    Distinguished in Diverticular Disease
    Distinguished in Diverticular Disease

    Online Radiology Medical Group Inc.

    1770 Iowa Ave Ste 280, 
    Riverside, CA 
     (10.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Peter Piampiano is a Radiologist practicing medicine in Riverside, California. Dr. Piampiano is rated as a Distinguished provider by MediFind in the treatment of Diverticular Disease. He is also highly rated in 51 other conditions, according to our data. His clinical expertise encompasses Gallbladder Disease, Visceromegaly, Diverticular Disease, and Fecal Impaction.

    Experienced in Diverticular Disease
    Gastroenterology
    Experienced in Diverticular Disease
    Gastroenterology

    Fontana Medical Center

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

    Blanca Viramontes is a Gastroenterologist practicing medicine in Fontana, California. Dr. Viramontes is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. Her clinical expertise encompasses Hemorrhoids, Diverticular Disease, Banti's Syndrome, Esophageal Varices, and Endoscopy.

    Experienced in Diverticular Disease
    Internal Medicine
    Experienced in Diverticular Disease
    Internal Medicine

    Southern California Permanente Medical Group

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

    Jessica Hong is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Hong is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. Her clinical expertise encompasses Hepatitis B, Esophageal Varices, Banti's Syndrome, and Diverticular Disease.

    Experienced in Diverticular Disease
    Gastroenterology
    Experienced in Diverticular Disease
    Gastroenterology

    Fontana Medical Center

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

    Alexander Han is a Gastroenterologist practicing medicine in Fontana, California. Dr. Han is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. His clinical expertise encompasses Esophageal Varices, Hemorrhoids, Banti's Syndrome, Mallory-Weiss Syndrome, and Endoscopy. Dr. Han is currently accepting new patients.

    Experienced in Diverticular Disease
    Gastroenterology
    Experienced in Diverticular Disease
    Gastroenterology

    Fontana Medical Center

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

    Patricia Hsia is a Gastroenterologist practicing medicine in Fontana, California. Dr. Hsia is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. Her clinical expertise encompasses Hemorrhoids, Gastrointestinal Bleeding, Banti's Syndrome, Alcoholic Cirrhosis, and Endoscopy. Dr. Hsia is currently accepting new patients.

    Experienced in Diverticular Disease
    Gastroenterology
    Experienced in Diverticular Disease
    Gastroenterology

    Fontana Medical Center

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

    Michael Chan is a Gastroenterologist practicing medicine in Fontana, California. Dr. Chan is rated as an Experienced provider by MediFind in the treatment of Diverticular Disease. His clinical expertise encompasses Mallory-Weiss Syndrome, Esophageal Varices, Bile Duct Obstruction, Bile Acid Malabsorption, and Endoscopy. Dr. Chan is currently accepting new patients.

    Showing 1-20 of 183

    Last Updated: 04/28/2026

    What is the definition of Diverticular Disease?

    Diverticula are small, bulging sacs or pouches that form on the inner wall of the intestine. Diverticulitis occurs when these pouches become inflamed or infected. Most often, these pouches are in the lower part of the large intestine (colon).

    When should I see a Diverticular Disease 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 Diverticular Disease 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 Diverticular Disease 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 Diverticular Disease 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 Diverticular Disease 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 Diverticular Disease doctor search results page. 

    Why is it important to get a second opinion from a different Diverticular Disease 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 Diverticular Disease 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 Diverticular Disease 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 Diverticular Disease 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 Diverticular Disease doctors near Fontana, CA?

    Look for the filter feature on the left side of the Diverticular Disease 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 Diverticular Disease doctor that offers video calls?

    Look for the filter feature on the left-side of the Diverticular Disease 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

    More Diverticular Disease Doctors by city