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

Find the Top Congenital Hyperinsulinism Experts and Specialists

The 20 Best Congenital Hyperinsulinism Doctors near Pasadena, CA

Last Updated: 02/22/2026

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MediFind found 26 doctor with experience in Congenital Hyperinsulinism near Pasadena, CA. Of these, 22 are Experienced, 2 are Advanced and 2 are Distinguished.

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26 providers found
    Distinguished in Congenital Hyperinsulinism
    Pediatric Endocrinology
    Distinguished in Congenital Hyperinsulinism
    Pediatric Endocrinology

    Children's Hospital Los Angeles

    4650 W Sunset Blvd, 
    Los Angeles, CA 
     (9.0 miles away)
    Languages Spoken:
    English

    Mitchell Geffner is a Pediatric Endocrinologist in Los Angeles, California. Dr. Geffner is rated as a Distinguished provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Congenital Adrenal Hyperplasia (CAH), Intersex, Ovarian Overproduction of Androgens, Short Stature (Growth Disorders), and Hormone Replacement Therapy (HRT).

    Jhanna A. Nariyants
    Experienced in Congenital Hyperinsulinism
    Endocrinology | Internal Medicine
    Experienced in Congenital Hyperinsulinism
    Endocrinology | Internal Medicine

    Optum - Glenoaks

    988 S Fair Oaks Ave, 
    Pasadena, CA 
     (1.3 miles away)
    Experience:
    23+ years
    Languages Spoken:
    English

    Treat patients with respect and compassion in a professional environment. Dr. Nariyants is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. Her top areas of expertise are Adrenal Gland Adenoma, Type 2 Diabetes (T2D), Pheochromocytoma, and Hereditary Paraganglioma-Pheochromocytoma Syndrome.

    Advanced in Congenital Hyperinsulinism
    Internal Medicine
    Advanced in Congenital Hyperinsulinism
    Internal Medicine

    Southern California Internists Medical Group

    1713 E Walnut St, 
    Pasadena, CA 
     (1.7 miles away)
    Experience:
    19+ years
    Languages Spoken:
    English
    Offers Telehealth

    Gregor Paronian is a primary care provider, practicing in Internal Medicine in Pasadena, California. Dr. Paronian has been practicing medicine for over 19 years and is rated as an Advanced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Cirrhosis, Familial Combined Hyperlipidemia, Xanthoma, and Vitamin D Deficiency.

    Learn about our expert tiers
    Advanced in Congenital Hyperinsulinism
    Endocrinology
    Advanced in Congenital Hyperinsulinism
    Endocrinology

    USC University Hospital

    1520 San Pablo St Ste 1000, 
    Los Angeles, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Kathleen Page is an Endocrinologist in Los Angeles, California. Dr. Page is rated as an Advanced provider by MediFind in the treatment of Congenital Hyperinsulinism. Her top areas of expertise are Gestational Diabetes, Obesity, Congenital Hyperinsulinism, and Type 2 Diabetes (T2D).

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

    Joseph J. Pachorek Md., Inc.

    630 S Raymond Ave, 
    Pasadena, CA 
     (0.9 miles away)
    Experience:
    40+ years
    Languages Spoken:
    English
    Offers Telehealth

    Joseph Pachorek is a primary care provider, practicing in Internal Medicine in Pasadena, California. Dr. Pachorek has been practicing medicine for over 40 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Severe Combined Immunodeficiency (SCID), X-Linked Severe Combined Immunodeficiency, Sideroblastic Anemia, and High Cholesterol.

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

    Washington Medical Group

    2544 E Washington Blvd, 
    Pasadena, CA 
     (3.1 miles away)
    Experience:
    41+ years
    Languages Spoken:
    English
    Offers Telehealth

    Marina Manvelyan is a primary care provider, practicing in Internal Medicine in Pasadena, California. Dr. Manvelyan has been practicing medicine for over 41 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. Her top areas of expertise are Urinary Tract Infection in Children, Urinary Tract Infection (UTI), Macroamylasemia, and Primary Immunodeficiency (PID).

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

    Jason Boutros Md., Inc.

    2554 E Washington Blvd, 
    Pasadena, CA 
     (3.1 miles away)
    Experience:
    43+ years
    Languages Spoken:
    English

    Jason Boutros is a primary care provider, practicing in Internal Medicine in Pasadena, California. Dr. Boutros has been practicing medicine for over 43 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Bronchitis, High Cholesterol, Familial Combined Hyperlipidemia, and Xanthoma.

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

    Office

    828 E Valley Blvd Ste C, 
    San Gabriel, CA 
     (4.8 miles away)
    Languages Spoken:
    English

    Emerald Tay is a primary care provider, practicing in Internal Medicine in San Gabriel, California. Dr. Tay is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. Her top areas of expertise are Jaundice, Hepatitis, High Cholesterol, Campylobacter Infection, and Gastrostomy.

    Experienced in Congenital Hyperinsulinism
    Endocrinology
    Experienced in Congenital Hyperinsulinism
    Endocrinology

    Keck Hospital Of USC

    1500 San Pablo St, 
    Los Angeles, CA 
     (6.8 miles away)
    Languages Spoken:
    English

    Thomas Buchanan is an Endocrinologist in Los Angeles, California. Dr. Buchanan is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Gestational Diabetes, Type 2 Diabetes (T2D), Obesity, and Maturity Onset Diabetes of the Young.

    Experienced in Congenital Hyperinsulinism
    Endocrinology
    Experienced in Congenital Hyperinsulinism
    Endocrinology

    USC University Hospital

    1520 San Pablo St Ste 1000, 
    Los Angeles, CA 
     (7.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Braden Barnett is an Endocrinologist in Los Angeles, California. Dr. Barnett is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Osteoporosis, Postmenopausal Osteoporosis, Paget's Disease of Bone, and Medullary Thyroid Carcinoma.

    Experienced in Congenital Hyperinsulinism
    Endocrinology
    Experienced in Congenital Hyperinsulinism
    Endocrinology

    City Of Hope's Helford Clinical Research Hospital

    1500 Duarte Rd, 
    Duarte, CA 
     (10.0 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Pooja Manroa is an Endocrinologist in Duarte, California. Dr. Manroa has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. Her top areas of expertise are Follicular Thyroid Cancer, Thyroid Cancer, Papillary Thyroid Cancer, Medullary Thyroid Carcinoma, and Thyroidectomy.

    Experienced in Congenital Hyperinsulinism
    Endocrinology
    Experienced in Congenital Hyperinsulinism
    Endocrinology

    Maria Mercedes Chang Villacreses, M.D.

    1500 Duarte Rd, 
    Duarte, CA 
     (10.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Maria Chang is an Endocrinologist in Duarte, California. Dr. Chang is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. Her top areas of expertise are Thyroid Cancer, Anaplastic Thyroid Cancer, Vitamin D Deficiency, and Type 2 Diabetes (T2D).

    Ferdinant Saran
    Experienced in Congenital Hyperinsulinism
    Family Medicine | Geriatrics
    Experienced in Congenital Hyperinsulinism
    Family Medicine | Geriatrics

    Saran Medical Center

    1510 S Central Ave, 
    Glendale, CA 
     (6.6 miles away)
    Experience:
    35+ years
    Languages Spoken:
    English
    Offers Telehealth

    - Provide state of the art medical care for our patients in a friendly, compassionate and professional setting.- Communication is the key to a great physician and patient relationship. I strive to explain their medical condition and discuss their treatment option in plain language. Questions are answered. Pateints will leave the office feeling that all their concerns and questions were addressed. - I review all the current medications with my patients, making sure that they don't have any adverse affects with each other. One of the main points in geriatric medicine is to reduce the number of tablets an elderly patient is taking. - I seek to provide the most complete care to my patients in a caring and respectful way. Dr. Saran is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Vitamin D Deficiency, Cirrhosis, Peptic Ulcer, Gastrostomy, and Colonoscopy.

    Distinguished in Congenital Hyperinsulinism
    Internal Medicine
    Distinguished in Congenital Hyperinsulinism
    Internal Medicine

    Eric I. Feit, Phd MD

    2701 W Alameda Ave, 
    Burbank, CA 
     (10.7 miles away)
    Experience:
    43+ years
    Languages Spoken:
    English

    Eric Feit is a primary care provider, practicing in Internal Medicine in Burbank, California. Dr. Feit has been practicing medicine for over 43 years and is rated as a Distinguished provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Congenital Hyperinsulinism, Low Blood Sugar, Acute Cystitis, Gastrostomy, and Ureteroscopy.

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

    Jaykumar H. Shah Md., A Professional Corporation

    623 W Duarte Rd, 
    Arcadia, CA 
     (5.4 miles away)
    Experience:
    46+ years
    Languages Spoken:
    English

    Jaykumar Shah is a primary care provider, practicing in Internal Medicine in Arcadia, California. Dr. Shah has been practicing medicine for over 46 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Enlarged Prostate (BPH), Sitosterolemia, High Cholesterol, Gastrostomy, and Endoscopy.

    Experienced in Congenital Hyperinsulinism
    Family Medicine
    Experienced in Congenital Hyperinsulinism
    Family Medicine
    2520 Honolulu Ave, Ste 170, 
    Montrose, CA 
     (6.5 miles away)
    Languages Spoken:
    English

    Donald Plance is a primary care provider, practicing in Family Medicine in Montrose, California. Dr. Plance is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Preaxial Polydactyly Type 1, Hypothyroidism, Anemia, and Testicular Failure.

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

    Asian Pacific Health Care Venture

    1530 Hillhurst Ave, 
    Los Angeles, CA 
     (8.8 miles away)
    Languages Spoken:
    English

    Lena Al is a primary care provider, practicing in Family Medicine in Los Angeles, California. Dr. Al is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. Her top areas of expertise are Macroamylasemia, Syphilis, Gonorrhea, and Type 2 Diabetes (T2D).

    Experienced in Congenital Hyperinsulinism
    Pediatric Endocrinology
    Experienced in Congenital Hyperinsulinism
    Pediatric Endocrinology
    4650 West Sunset Boulevard, 
    Los Angeles, CA 
     (9.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    David Geller is a Pediatric Endocrinologist in Los Angeles, California. Dr. Geller is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Short Stature (Growth Disorders), Idiopathic Short Stature (ISS), Familial Short Stature (FSS), and Precocious Puberty. Dr. Geller is currently accepting new patients.

    Experienced in Congenital Hyperinsulinism
    General Practice | Pediatrics
    Experienced in Congenital Hyperinsulinism
    General Practice | Pediatrics

    Angeles Community Health Center

    1919 W 7th St, 
    Los Angeles, CA 
     (9.8 miles away)
    Experience:
    37+ years
    Languages Spoken:
    English
    Offers Telehealth

    Jose Diaz is a primary care provider, a Pediatrics specialist and a General Practice provider in Los Angeles, California. Dr. Diaz has been practicing medicine for over 37 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Type 2 Diabetes (T2D), COVID-19, Multisystem Inflammatory Syndrome in Children (MIS-C), Tracheitis, and Intrauterine Device Insertion.

    Experienced in Congenital Hyperinsulinism
    Endocrinology
    Experienced in Congenital Hyperinsulinism
    Endocrinology

    Behrouz Salehian, M.D.

    1500 Duarte Rd, 
    Duarte, CA 
     (10.0 miles away)
    Experience:
    47+ years
    Languages Spoken:
    English
    Offers Telehealth

    Behrouz Salehian is an Endocrinologist in Duarte, California. Dr. Salehian has been practicing medicine for over 47 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Hyperinsulinism. His top areas of expertise are Thyroid Cancer, Anaplastic Thyroid Cancer, Papillary Thyroid Cancer, and Follicular Thyroid Cancer.

    Showing 1-20 of 26

    Last Updated: 02/22/2026

    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 Pasadena, 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 Pasadena, 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 Pasadena, 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 Pasadena, 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 Pasadena, 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 Pasadena, 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 Pasadena, 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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