The 20 Best Gastrostomy Doctors near Ontario, CA

Find the Experts and Specialists who perform Gastrostomy

Last Updated: 04/28/2026

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MediFind found 190 doctor with experience in Gastrostomy near Ontario, CA. Of these, 162 are Experienced and 28 are Advanced.

Location
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190 providers found
    Experienced in Gastrostomy
    Experienced in Gastrostomy

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (2.7 miles away)
    Languages Spoken:
    English

    Stuart Berry is a Radiologist practicing medicine in Upland, California. Dr. Berry is rated as an Experienced provider by MediFind in Gastrostomy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Ascites, Pleurisy, Pleural Effusion, Bone Marrow Aspiration, and Stent Placement.

    Experienced in Gastrostomy
    Intensive Care Medicine
    Experienced in Gastrostomy
    Intensive Care Medicine

    Office

    3281 E Guasti Rd Ste 500, 
    Ontario, CA 
     (3.8 miles away)
    Languages Spoken:
    English

    Leslie Ghisletta is an Intensive Care Medicine provider practicing medicine in Ontario, California. Dr. Ghisletta is rated as an Experienced provider by MediFind in Gastrostomy. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Subarachnoid Hemorrhage, Delirium, Chronic Subdural Hematoma, Subdural Hematoma, and Gastrostomy.

    Experienced in Gastrostomy
    Pain Medicine
    Experienced in Gastrostomy
    Pain Medicine

    Dr Lee Pain MD Inc

    13768 Roswell Ave Ste 220, 
    Chino, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    John Lee is a Pain Medicine provider practicing medicine in Chino, California. Dr. Lee is rated as an Experienced provider by MediFind in Gastrostomy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Fibromyalgia, Complex Regional Pain Syndrome, Facet Joint Syndrome, Gastrostomy, and Colonoscopy.

    Learn about our expert tiers
    Advanced in Gastrostomy
    Advanced in Gastrostomy

    ProHealth Partners A Medical Group Inc.

    1042 San Bernardino Rd, 
    Upland, CA 
     (2.6 miles away)
    Languages Spoken:
    English

    Gimha Gunawardana is a Geriatrics provider practicing medicine in Upland, California. Dr. Gunawardana is rated as an Advanced provider by MediFind in Gastrostomy. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses End-Stage Renal Disease (ESRD), Sepsis, Pneumonia, Gastrostomy, and Endoscopy.

    Advanced in Gastrostomy
    Internal Medicine
    Advanced in Gastrostomy
    Internal Medicine

    Indus Healthcare Inc

    1060 E Foothill Blvd Ste 204, 
    Upland, CA 
     (2.9 miles away)
    Languages Spoken:
    English

    Yogesh Paliwal is an Internal Medicine provider practicing medicine in Upland, California. Dr. Paliwal is rated as an Advanced provider by MediFind in Gastrostomy. He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertensive Heart Disease, Gastrostomy, and Endoscopy.

    Advanced in Gastrostomy
    General Surgery
    Advanced in Gastrostomy
    General Surgery

    Anthony S. Oh, MD A Medical Corporation

    4950 San Bernardino St, 
    Montclair, CA 
     (2.9 miles away)
    Experience:
    30+ years
    Languages Spoken:
    English

    Anthony Oh is a General Surgeon practicing medicine in Montclair, California. He has been practicing medicine for over 30 years. Dr. Oh is rated as an Advanced provider by MediFind in Gastrostomy. He is also highly rated in 19 other conditions, according to our data. His clinical expertise encompasses Gallstones, Choledocholithiasis, Gallbladder Disease, Colostomy, and Gastrostomy. Dr. Oh is board certified in American Board Of Surgery.

    Advanced in Gastrostomy
    Internal Medicine
    Advanced in Gastrostomy
    Internal Medicine

    Hadi, Ghassan, E., M.D., Inc.

    1060 E Foothill Blvd, 
    Upland, CA 
     (3.0 miles away)
    Experience:
    38+ years
    Languages Spoken:
    English

    Ghassan Hadi is a primary care provider, practicing in Internal Medicine in Upland, California. He has been practicing medicine for over 38 years. Dr. Hadi is rated as an Advanced provider by MediFind in Gastrostomy. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Acute Kidney Failure, End-Stage Renal Disease (ESRD), Sepsis, Gastrostomy, and Endoscopy. Dr. Hadi is board certified in American Board Of Internal Medicine.

    Advanced in Gastrostomy
    Gastroenterology
    Advanced in Gastrostomy
    Gastroenterology

    Umesh C. Shah MD A Professional Corp.

    12540 10th St Ste B, 
    Chino, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    Umesh Shah is a Gastroenterologist practicing medicine in Chino, California. Dr. Shah is rated as an Advanced provider by MediFind in Gastrostomy. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Esophagitis, Hereditary Pancreatitis, Gastrectomy, and Gastrostomy.

    Advanced in Gastrostomy
    Internal Medicine
    Advanced in Gastrostomy
    Internal Medicine

    Office

    5475 Walnut Ave Ste H, 
    Chino, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    Sudhir Reddy is an Internal Medicine provider practicing medicine in Chino, California. Dr. Reddy is rated as an Advanced provider by MediFind in Gastrostomy. He is also highly rated in 32 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Hemorrhoids, Gastrostomy, and Endoscopy.

    Advanced in Gastrostomy
    Internal Medicine
    Advanced in Gastrostomy
    Internal Medicine

    Hussain Al-Darsani M.D. A Professional Corp.

    5562 Philadelphia St Ste 203, 
    Chino, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    Hussain Al is an Internal Medicine provider practicing medicine in Chino, California. Dr. Al is rated as an Advanced provider by MediFind in Gastrostomy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Gastroesophageal Reflux Disease (GERD), Gastritis, Gastrostomy, and Gastrectomy.

    Advanced in Gastrostomy
    Internal Medicine
    Advanced in Gastrostomy
    Internal Medicine

    Chino Valley Family Physicians A Medical Group

    13193 Central Ave Ste 100, 
    Chino, CA 
     (4.6 miles away)
    Languages Spoken:
    English

    Ali Etemadian is a primary care provider, practicing in Internal Medicine in Chino, California. Dr. Etemadian is rated as an Advanced provider by MediFind in Gastrostomy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD), Renovascular Hypertension, COVID-19, Gastrostomy, and Endoscopy.

    Experienced in Gastrostomy
    Gastroenterology
    Experienced in Gastrostomy
    Gastroenterology

    Andrea S Tieng MD, Inc

    10801 Foothill Blvd, Ste 106, 
    Rancho Cucamonga, CA 
     (5.3 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 Experienced provider by MediFind in Gastrostomy. 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 Gastrostomy
    Internal Medicine
    Experienced in Gastrostomy
    Internal Medicine

    Our Family Medical Group Inc.

    1131 W 6th St Ste 150, 
    Ontario, CA 
     (1.5 miles away)
    Languages Spoken:
    English

    Hedy Loa is a primary care provider, practicing in Internal Medicine in Ontario, California. Dr. Loa is rated as an Experienced provider by MediFind in Gastrostomy. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Type 2 Diabetes (T2D), Obesity, Osteomyelitis in Children, Gastrostomy, and Endoscopy.

    Experienced in Gastrostomy
    Family Medicine
    Experienced in Gastrostomy
    Family Medicine

    S. M. Hammad Rizvi, M.D., Inc.

    901 San Bernardino Rd, 
    Upland, CA 
     (2.5 miles away)
    Experience:
    25+ years
    Languages Spoken:
    English
    Offers Telehealth

    Syed Rizvi is a primary care provider, practicing in Family Medicine in Upland, California. He has been practicing medicine for over 25 years. Dr. Rizvi is rated as an Experienced provider by MediFind in Gastrostomy. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Hypertensive Heart Disease, Multisystem Inflammatory Syndrome in Children (MIS-C), COVID-19, Gastrostomy, and Endoscopy. Dr. Rizvi is board certified in American Board Of Family Medicine.

    Experienced in Gastrostomy
    Internal Medicine
    Experienced in Gastrostomy
    Internal Medicine

    ProHealth Partners A Medical Group Inc.

    1042 San Bernardino Rd, 
    Upland, CA 
     (2.6 miles away)
    Languages Spoken:
    English

    Mansurur Khan is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Khan is rated as an Experienced provider by MediFind in Gastrostomy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Renovascular Hypertension, Stroke, Hypertensive Heart Disease, Gastrostomy, and Endoscopy.

    Experienced in Gastrostomy
    Family Medicine
    Experienced in Gastrostomy
    Family Medicine

    ProHealth Partners A Medical Group Inc.

    1042 San Bernardino Rd, 
    Upland, CA 
     (2.6 miles away)
    Languages Spoken:
    English

    Azhar Majeed is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Majeed is rated as an Experienced provider by MediFind in Gastrostomy. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Hypertensive Heart Disease, Acute Kidney Failure, Multisystem Inflammatory Syndrome in Children (MIS-C), Gastrostomy, and Endoscopy.

    Experienced in Gastrostomy
    General Surgery
    Experienced in Gastrostomy
    General Surgery

    Upland Surgical Associates

    510 N 13th Ave, 
    Upland, CA 
     (2.6 miles away)
    Experience:
    30+ years
    Languages Spoken:
    English

    Bryce Beseth is a General Surgeon practicing medicine in Upland, California. He has been practicing medicine for over 30 years. Dr. Beseth is rated as an Experienced provider by MediFind in Gastrostomy. He is also highly rated in 39 other conditions, according to our data. His clinical expertise encompasses Gangrene, Choledocholithiasis, Necrosis, Hernia Surgery, and Colostomy. Dr. Beseth is board certified in American Board Of Surgery.

    Experienced in Gastrostomy
    Experienced in Gastrostomy

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (2.7 miles away)
    Languages Spoken:
    English

    Ray Lengvilas is a Pediatrics provider practicing medicine in Upland, California. Dr. Lengvilas is rated as an Experienced provider by MediFind in Gastrostomy. His clinical expertise encompasses Gastrostomy.

    Experienced in Gastrostomy
    Palliative Medicine
    Experienced in Gastrostomy
    Palliative Medicine

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (2.7 miles away)
    Languages Spoken:
    English

    Bilal Rayes is a Palliative Medicine provider practicing medicine in Upland, California. Dr. Rayes is rated as an Experienced provider by MediFind in Gastrostomy. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Spontaneous Coronary Artery Dissection (SCAD), Heart Failure with Preserved Ejection Fraction (HFpEF), Saddle Pulmonary Embolism, Hemorrhoidectomy, and Endoscopy.

    Experienced in Gastrostomy
    Family Medicine
    Experienced in Gastrostomy
    Family Medicine

    Gabrillo, Warren R. Iii, M.D., Inc.

    631 N 13th Ave, 
    Upland, CA 
     (2.7 miles away)
    Experience:
    47+ years
    Languages Spoken:
    English

    Warren Gabrillo is a primary care provider, practicing in Family Medicine in Upland, California. He has been practicing medicine for over 47 years. Dr. Gabrillo is rated as an Experienced provider by MediFind in Gastrostomy. His clinical expertise encompasses Hypertension, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Type 2 Diabetes (T2D), and Gastrostomy. Dr. Gabrillo is board certified in American Board Of Family Medicine.

    Showing 1-20 of 190

    Last Updated: 04/28/2026

    When should I see a Gastrostomy doctor near Ontario, 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 Gastrostomy doctor near Ontario, 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 Gastrostomy doctors near Ontario, 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 Gastrostomy doctors near Ontario, 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 Gastrostomy doctor near Ontario, 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 Gastrostomy doctor search results page. 

    Why is it important to get a second opinion from a different Gastrostomy 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 Gastrostomy doctor near Ontario, 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 Gastrostomy 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 Gastrostomy 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 Gastrostomy doctors near Ontario, CA?

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

    Look for the filter feature on the left-side of the Gastrostomy 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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