The 20 Best Colonoscopy Doctors near Simi Valley, CA

Find the Experts and Specialists who perform Colonoscopy

The 20 Best Colonoscopy Doctors near Simi Valley, CA

Last Updated: 02/22/2026

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MediFind found 78 doctor with experience in Colonoscopy near Simi Valley, CA. Of these, 66 are Experienced and 12 are Advanced.

Location
LocationClose
78 providers found
    Advanced in Colonoscopy
    Internal Medicine
    Advanced in Colonoscopy
    Internal Medicine

    Jasbir Tiwana, MD

    1172 Swallow Ln, 
    Simi Valley, CA 
     (1.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Jasbir Tiwana is an Internal Medicine provider in Simi Valley, California. Dr. Tiwana is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Gallbladder Disease, Respiratory Syncytial Virus (RSV) Infection, Liver Failure, Colonoscopy, and Gastrostomy. Dr. Tiwana is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Gastroenterology & Hepatology Specialists Inc.

    2876 Sycamore Dr Ste 203, 
    Simi Valley, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mayur Trivedi is a Gastroenterologist in Simi Valley, California. Dr. Trivedi is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Hemorrhoids, Gastrointestinal Bleeding, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Colonoscopy.

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

    Moe Amadpour, Md. Inc

    1159 Roadrunner Way, 
    Simi Valley, CA 
     (1.0 miles away)
    Experience:
    33+ years
    Languages Spoken:
    English
    Offers Telehealth

    Moe Amadpour is an Internal Medicine specialist and a Gastroenterologist in Simi Valley, California. Dr. Amadpour has been practicing medicine for over 33 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Esophagitis, Acute Pancreatitis, Diverticular Disease, Gastrectomy, and Colonoscopy.

    Learn about our expert tiers
    Gilbert Simoni
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Advanced Gastroentrology Inc

    555 Marin St, Ste 270, 
    Thousand Oaks, CA 
     (8.2 miles away)
    Languages Spoken:
    English, Farsi, Spanish
    Accepting New Patients
    Offers Telehealth

    Telehealth visits are available.Our mission is to build patient trust and to be the catalyst for a healthier lifestyle through prevention, early detection and our innovative approach to GI care.. Dr. Simoni is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Malabsorption, Visceromegaly, Trichohepatoenteric Syndrome, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Simi Workplace Multi-Specialty Clinic Inc

    2755 Alamo St Ste 100, 
    Simi Valley, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Anna Skay is a Gastroenterologist in Simi Valley, California. Dr. Skay is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Hemorrhoids, Familial Adenomatous Polyposis, Gardner Syndrome, Colonoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Simicare Medical Group Inc.

    1164 Swallow Ln, 
    Simi Valley, CA 
     (1.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mojgan Sadeghi is a primary care provider, practicing in Family Medicine in Simi Valley, California. Dr. Sadeghi is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are High Cholesterol, Ascariasis, Familial Combined Hyperlipidemia, Xanthoma, and Colonoscopy.

    Experienced in Colonoscopy
    Rheumatology
    Experienced in Colonoscopy
    Rheumatology

    Tony Makhlouf, MD Private Practice

    143 Parrot Ln, 
    Simi Valley, CA 
     (1.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Tony Makhlouf is a Rheumatologist in Simi Valley, California. Dr. Makhlouf is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Rheumatoid Arthritis (RA), Rheumatoid Pneumoconiosis, Rheumatoid Lung Disease, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Adventist Health Simi Valley

    2975 Sycamore Dr, 
    Simi Valley, CA 
     (2.5 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Daria Younessi is a Family Medicine provider in Simi Valley, California. Dr. Younessi 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 Gallbladder Disease, Liver Failure, Chronic Inflammatory Response Syndrome (CIRS), Gastrostomy, and Hip Replacement.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Adventist Health Simi Valley

    2975 Sycamore Dr, 
    Simi Valley, CA 
     (2.5 miles away)
    Languages Spoken:
    English

    Rabina Gill is a Family Medicine provider in Simi Valley, California. Dr. Gill is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Liver Failure, Gallbladder Disease, Heart Failure with Preserved Ejection Fraction (HFpEF), Colonoscopy, and Gastrostomy.

    Experienced in Colonoscopy
    Endocrinology
    Experienced in Colonoscopy
    Endocrinology

    Harris Wasser, MD

    2950 Sycamore Dr, 
    Simi Valley, CA 
     (2.5 miles away)
    Experience:
    48+ years
    Languages Spoken:
    English

    Harris Wasser is an Endocrinologist in Simi Valley, California. Dr. Wasser has been practicing medicine for over 48 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Type 2 Diabetes (T2D), Hyperparathyroidism, Thyroid Storm, Gastrostomy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Sound Physicians

    215 W Janss Rd, 
    Thousand Oaks, CA 
     (7.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Garry Forkosh is a primary care provider, practicing in Internal Medicine in Thousand Oaks, California. Dr. Forkosh is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Sepsis, Malnutrition, Supravalvular Aortic Stenosis, Gastrostomy, and Endoscopy. Dr. Forkosh is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Arroyo Oaks Medical Associates, Inc

    2230 Lynn Rd Ste 200, 
    Thousand Oaks, CA 
     (7.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Russell Hines is a primary care provider, practicing in Internal Medicine in Thousand Oaks, California. Dr. Hines is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Glucocorticoid-Remediable Aldosteronism, Hypertension, Familial Hypertension, Colonoscopy, and Endoscopy. Dr. Hines is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Arroyo Oaks Medical Associates, Inc

    2230 Lynn Rd Ste 200, 
    Thousand Oaks, CA 
     (7.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Amit Monga is a primary care provider, practicing in Internal Medicine in Thousand Oaks, California. Dr. Monga is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, Endoscopy, and Pacemaker Implantation. Dr. Monga is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    7320 Woodlake Avenue, Suite 310, 
    West Hills, CA 
     (9.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Jonathan Matthew is a Gastroenterologist in West Hills, California. Dr. Matthew is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Diarrhea, Trichohepatoenteric Syndrome, Endoscopy, and Colonoscopy. Dr. Matthew is currently accepting new patients.

    Karen L. Simon
    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Ventura County Gastroenterology Group

    4005 Mission Oaks Blvd, Ste A, 
    Camarillo, CA 
     (13.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Karen Simon received her B.A. from Stanford University in 1996. She then attended Northwestern University for medical school. She completed her residency at Cedars-Sinai Medical Center in 2004 and her fellowship at UCLA and Cedars in 2008.Dr. Simon has proudly been serving patients in Ventura County since 2008 and is very involved in field research. Dr. Simon is also a speaker for Exact Sciences on behalf of Cologuard and is actively associated in research studies. She is a part of the Takeda Chloride Channel Council and a speaker for Amitiza, as well.She enjoys educating the doctors and the community as a lecturer on topics such as colorectal cancer screening at St. John's Hospital, where she is also a part of the Ethics Committee.Dr. Simon aims specifically to work with patients to discover the problem and develop a treatment strategy. She has a particular interest in Celiac Disease, Inflammatory Bowel Disease (IBD), and a passion for improving colorectal cancer detection.She is dedicated to developing a relationship with patients by utilizing education and mutual information sharing. Dr. Simon is rated as an Advanced provider by MediFind in Colonoscopy. Her top areas of expertise are Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Painful Swallowing, Endoscopy, and Colonoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Alister A George, MD

    3510 N Moorpark Rd Ste 201, 
    Thousand Oaks, CA 
     (7.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Alister George is a Gastroenterologist in Thousand Oaks, California. Dr. George is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Esophagitis, Gastroesophageal Reflux Disease (GERD), Gastric Dysmotility, Endoscopy, and Colonoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Kumar Desai MD Inc.

    227 W Janss Rd Ste 315, 
    Thousand Oaks, CA 
     (7.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Kumar Desai is a Gastroenterologist in Thousand Oaks, California. Dr. Desai is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Trichohepatoenteric Syndrome, Jaundice, Gallbladder Disease, Endoscopy, and Colonoscopy.

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

    Genesis Healthcare Partners

    7320 Woodlake Ave, 
    West Hills, CA 
     (9.7 miles away)
    Experience:
    39+ years
    Languages Spoken:
    English
    Offers Telehealth

    Calin Arimie is an Internal Medicine specialist and a Gastroenterologist in West Hills, California. Dr. Arimie has been practicing medicine for over 39 years and is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Ascites, Hepatitis, Gastrointestinal Bleeding, Hemorrhoidectomy, and Gastrectomy.

    Advanced in Colonoscopy
    Internal Medicine
    Advanced in Colonoscopy
    Internal Medicine

    Office

    23101 Sherman Pl Ste 500, 
    West Hills, CA 
     (9.9 miles away)
    Languages Spoken:
    English

    Caleb Hirsch is a primary care provider, practicing in Internal Medicine in West Hills, California. Dr. Hirsch is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Necrosis, Hypertensive Heart Disease, Enlarged Liver, Gastrostomy, and Endoscopy.

    Tigalat Shalita
    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Tigalat Shalita, DO Private Practice

    7230 Medical Center Dr, Ste 202, 
    West Hills, CA 
     (9.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Patients' understanding of their conditions is the most critical first step in their healing process. We emphasize patient teaching in every aspect of our encounters with our patients. Dr. Shalita is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Acute Kidney Failure, Necrosis, COVID-19, Endoscopy, and Gastrostomy.

    Showing 1-20 of 78

    Last Updated: 02/22/2026

    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 Simi Valley, 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 Simi Valley, 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 Simi Valley, 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 Simi Valley, 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 Simi Valley, 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 Simi Valley, 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 Simi Valley, 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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