The 20 Best Congenital Hyperinsulinism Doctors Near Me in upland, CA

Find the Top Congenital Hyperinsulinism Experts and Specialists

Last Updated: 09/26/2026

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MediFind found 13 doctor with experience in Congenital Hyperinsulinism near upland, CA. Of these, 13 are Experienced.

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13 providers found
    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine

    Cucamonga Valley Medical Group

    7777 Milliken Ave Ste 240, 
    Rancho Cucamonga, CA 
     (4.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Eric Bekemeier is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Bekemeier is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Obesity, Cirrhosis, Familial Combined Hyperlipidemia, and Xanthoma. Dr. Bekemeier is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine

    Cucamonga Valley Medical Group, Inc.

    5562 Philadelphia St, 
    Chino, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jesse Minguez is a primary care provider, practicing in Family Medicine in Chino, California. Dr. Minguez is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 49 other conditions, according to our data. His clinical expertise encompasses Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and Alcoholic Neuropathy. Dr. Minguez is board certified in American Board Of Family Medicine. Dr. Minguez is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine

    Cucamonga Valley Medical Group, Inc.

    1310 San Bernardino Rd, 
    Upland, CA 
     (1.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Muhammad Mowjood is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Mowjood is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Obesity, Methylmalonic Acidemia with Homocystinuria, Hypermethioninemia, and Sulfite Oxidase Deficiency. Dr. Mowjood is board certified in American Osteopathic Board Of Family Practice.

    Learn about our expert tiers
    Experienced in Congenital Hyperinsulinism
    Endocrinology
    Experienced in Congenital Hyperinsulinism
    Endocrinology
    Referral required

    Inland Endocrine

    9471 Haven Ave, 
    Rancho Cucamonga, CA 
     (4.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Stuart Seigel is an Endocrinologist practicing medicine in Rancho Cucamonga, California. Dr. Seigel is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Type 1 Diabetes (T1D), Thyroid Storm, and Low Testosterone. Dr. Seigel is board certified in American Board Of Internal Medicine. Dr. Seigel is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Internal Medicine
    Experienced in Congenital Hyperinsulinism
    Internal Medicine

    Cucamonga Valley Medical Group, Inc.

    5562 Philadelphia St, 
    Chino, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Brandon Tong is a primary care provider, practicing in Internal Medicine in Chino, California. Dr. Tong is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Obesity, Familial HDL Deficiency, Fish-Eye Disease, Hypolipoproteinemia, and Ureteroscopy. Dr. Tong is board certified in American Osteopathic Board Of Internal Medicine.

    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine

    Ravinder Singh, Md, Inc.

    8231 Rochester Ave, 
    Rancho Cucamonga, CA 
     (6.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ravinder Singh is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Singh is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 121 other conditions, according to our data. His clinical expertise encompasses Hypercalcemia, Milk-Alkali Syndrome, Type 2 Diabetes (T2D), Hormone Replacement Therapy (HRT), and Parathyroidectomy. Dr. Singh is board certified in American Board Of Family Medicine. Dr. Singh is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Internal Medicine
    Experienced in Congenital Hyperinsulinism
    Internal Medicine

    Mallu C. Reddy M.D., Inc

    1196 N Park Ave, 
    Pomona, CA 
     (6.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Mallu Reddy is a primary care provider, practicing in Internal Medicine in Pomona, California. Dr. Reddy is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 45 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Hypertension, Familial Hypertension, Endoscopy, and Gastrostomy. Dr. Reddy is board certified in American Board Of Internal Medicine. Dr. Reddy is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Experienced in Congenital Hyperinsulinism

    Cucamonga Valley Medical Group, Inc.

    16465 Sierra Lakes Pkwy, 
    Fontana, CA 
     (8.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Kimberly Bekemeier is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Bekemeier is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. She is also highly rated in 28 other conditions, according to our data. Her clinical expertise encompasses Obesity, Obesity in Children, Cirrhosis, and High Cholesterol. Dr. Bekemeier is board certified in American Board Of Family Medicine. Dr. Bekemeier is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine

    Cucamonga Valley Medical Group, Inc.

    7777 Milliken Ave, 
    Rancho Cucamonga, CA 
     (5.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mirelle Ignacio is a primary care provider, practicing in Family Medicine in Rancho Cucamonga, California. Dr. Ignacio is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. She is also highly rated in 26 other conditions, according to our data. Her clinical expertise encompasses Obesity, Methylmalonic Acidemia with Homocystinuria, Sulfite Oxidase Deficiency, and Hypermethioninemia. Dr. Ignacio is board certified in American Board Of Family Medicine.

    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine

    Cucamonga Valley Medical Group, Inc.

    255 E Bonita Ave, 
    Pomona, CA 
     (5.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Kyle Smart is a primary care provider, practicing in Family Medicine in Pomona, California. Dr. Smart is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 118 other conditions, according to our data. His clinical expertise encompasses Otitis, Obesity, Cellulitis, and Urinary Tract Infection in Children. Dr. Smart is board certified in American Board Of Family Medicine.

    Experienced in Congenital Hyperinsulinism
    Experienced in Congenital Hyperinsulinism
    Referral required

    Sadiq H Mandilawi, M.D. Bda: May Medical Management Corp.

    1234 Foothill Blvd, 
    La Verne, CA 
     (7.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Sadiq Mandilawi is an Endocrinologist practicing medicine in La Verne, California. Dr. Mandilawi is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Obesity in Children, Hashimoto Thyroiditis, Type 2 Diabetes (T2D), and Thyroid Nodule. Dr. Mandilawi is board certified in American Board Internal Medicine. Dr. Mandilawi is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Experienced in Congenital Hyperinsulinism
    Referral required

    Pacific Minimally Invasive Surgeons Inc

    1330 W Covina Blvd Ste 101, 
    San Dimas, CA 
     (9.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Mohamad Al-Sayed is an Endocrinologist practicing medicine in San Dimas, California. Dr. Al-Sayed is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Adrenal Insufficiency Pediatric, and Triple A Syndrome. Dr. Al-Sayed is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine

    Namita Mohideen MD Inc

    16854 Ivy Ave #A, 
    Fontana, CA 
     (10.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Rubin Lin is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Lin is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Chorea-Acanthocytosis, Familial Hypobetalipoproteinemia, Abetalipoproteinemia, and Apo A-I Deficiency.

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    Last Updated: 09/26/2026

    What is the definition of Congenital Hyperinsulinism?

    Congenital hyperinsulinism is a condition that causes individuals to have abnormally high levels of insulin. Insulin is a hormone that helps control levels of blood glucose, also called blood sugar. People with this condition have frequent episodes of low blood glucose (hypoglycemia). In infants and young children, these episodes are characterized by a lack of energy (lethargy), irritability, or difficulty feeding. Repeated episodes of low blood glucose increase the risk for serious complications such as breathing difficulties, seizures, intellectual disability, vision loss, brain damage, and coma.

    When should I see a Congenital Hyperinsulinism doctor near upland, 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 Congenital Hyperinsulinism doctor near upland, 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 Congenital Hyperinsulinism doctors near upland, 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 Congenital Hyperinsulinism doctors near upland, 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 Congenital Hyperinsulinism doctor near upland, 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 Congenital Hyperinsulinism doctor search results page. 

    Why is it important to get a second opinion from a different Congenital Hyperinsulinism 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 Congenital Hyperinsulinism doctor near upland, 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 Congenital Hyperinsulinism 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 Congenital Hyperinsulinism 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 Congenital Hyperinsulinism doctors near upland, CA?

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

    Look for the filter feature on the left-side of the Congenital Hyperinsulinism 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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