The 20 Best Hypothyroidism Doctors Near Me in Fontana, CA

Find the Top Hypothyroidism Experts and Specialists

The 20 Best Hypothyroidism Doctors near Fontana, CA

Last Updated: 02/22/2026

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MediFind found 312 doctor with experience in Hypothyroidism near Fontana, CA. Of these, 278 are Experienced, 31 are Advanced and 3 are Distinguished.

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312 providers found
    Experienced in Hypothyroidism
    Endocrinology
    Experienced in Hypothyroidism
    Endocrinology

    Southern California Permanente Medical Group

    9961 Sierra Ave, 
    Fontana, CA 
     (1.3 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Eunice Chuang is an Endocrinologist in Fontana, California. Dr. Chuang has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. Her top areas of expertise are Type 1 Diabetes (T1D), Thyroid Nodule, Hyperthyroidism, and Secondary Adrenal Insufficiency.

    Experienced in Hypothyroidism
    Endocrinology
    Experienced in Hypothyroidism
    Endocrinology

    Southern California Permanente Medical Group

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

    Dat Ha is an Endocrinologist in Fontana, California. Dr. Ha is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Type 1 Diabetes (T1D), Thyroid Nodule, Thyroid Storm, and Hyperthyroidism.

    Experienced in Hypothyroidism
    Family Medicine
    Experienced in Hypothyroidism
    Family Medicine

    Namita Mohideen MD Inc

    16854 Ivy Ave #A, 
    Fontana, CA 
     (1.7 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 Hypothyroidism. His top areas of expertise are Apo A-I Deficiency, Hypolipoproteinemia, Fish-Eye Disease, and Familial HDL Deficiency.

    Learn about our expert tiers
    Bashar G. Saad
    Distinguished in Hypothyroidism
    Endocrinology
    Distinguished in Hypothyroidism
    Endocrinology

    Saad, Bashar G., M.D., Inc.

    399 E Highland Ave, 
    San Bernardino, CA 
     (9.5 miles away)
    Experience:
    39+ years
    Languages Spoken:
    English

    Bashar Saad is an Endocrinologist in San Bernardino, California. Dr. Saad has been practicing medicine for over 39 years and is rated as a Distinguished provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Thyroid Nodule, Toxic Nodular Goiter, Type 2 Diabetes (T2D), and Thyroid Storm.

    Advanced in Hypothyroidism
    Family Medicine
    Advanced in Hypothyroidism
    Family Medicine

    Lasalle Medical Associates Rialto

    790 E Foothill Blvd, 
    Rialto, CA 
     (4.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Andrew Benin is a primary care provider, practicing in Family Medicine in Rialto, California. Dr. Benin is rated as an Advanced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Obesity in Children, Type 2 Diabetes (T2D), Food Allergy, and Obesity.

    Advanced in Hypothyroidism
    Family Medicine
    Advanced in Hypothyroidism
    Family Medicine

    Cucamonga Valley Medical Group, Inc.

    16465 Sierra Lakes Pkwy, 
    Fontana, CA 
     (4.9 miles away)
    Experience:
    24+ years
    Languages Spoken:
    English
    Offers Telehealth

    Jesse Minguez is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Minguez has been practicing medicine for over 24 years and is rated as an Advanced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and Alcoholic Neuropathy.

    Advanced in Hypothyroidism
    Internal Medicine
    Advanced in Hypothyroidism
    Internal Medicine

    Andro Sharobiem, MD

    3634 Elizabeth St, 
    Riverside, CA 
     (9.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Andro Sharobiem is a primary care provider, practicing in Internal Medicine in Riverside, California. Dr. Sharobiem is rated as an Advanced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Sepsis, Hypertension, Glucocorticoid-Remediable Aldosteronism, Gastrostomy, and Colonoscopy. Dr. Sharobiem is currently accepting new patients.

    Experienced in Hypothyroidism
    Family Medicine
    Experienced in Hypothyroidism
    Family Medicine

    Benny J. Guzman, Md, Corp.

    8253 Sierra Ave, 
    Fontana, CA 
     (0.8 miles away)
    Experience:
    28+ years
    Languages Spoken:
    English

    Benny Guzman is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Guzman has been practicing medicine for over 28 years and is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Inborn Amino Acid Metabolism Disorder, Osteomyelitis in Children, Type 2 Diabetes (T2D), and Peripheral Artery Disease.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine

    United Family Care

    8110 Mango Ave, 
    Fontana, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Nasser Liasi is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Liasi is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Type 2 Diabetes (T2D), Osteomyelitis in Children, Hypertension, and Familial Hypertension.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine
    8110 Mango Ave, Suite 104, 
    Fontana, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Duc Nguyen is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Osteomyelitis in Children, Type 2 Diabetes (T2D), High Cholesterol, and Purpura.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine

    Fontana Medical Center

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

    Michael Perdon is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Perdon is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Type 2 Diabetes (T2D), Osteomyelitis in Children, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Perdon is currently accepting new patients.

    Experienced in Hypothyroidism
    Family Medicine
    Experienced in Hypothyroidism
    Family Medicine

    Fontana Medical Center

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

    Carlyn Estrella is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Estrella is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. Her top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Asthma in Children, and Asthma.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine

    Kaiser Permanente Fontana Medical Center

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

    Sena St. John is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. St. John is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. Her top areas of expertise are Marginal Zone Lymphoma (MZL), Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, and Type 2 Diabetes (T2D).

    Experienced in Hypothyroidism
    Family Medicine
    Experienced in Hypothyroidism
    Family Medicine

    Bloomington Community Health Center

    18601 Valley Blvd, 
    Bloomington, CA 
     (2.6 miles away)
    Languages Spoken:
    English

    Calvin Lambert is a primary care provider, practicing in Family Medicine in Bloomington, California. Dr. Lambert is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Familial Hypertension, and Hypertension.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine

    Sun C Soung M.D. Inc

    1734 N Riverside Ave Ste 2, 
    Rialto, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Ravindranath Shahane is a primary care provider, practicing in Internal Medicine in Rialto, California. Dr. Shahane is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Opioid Use Disorder, Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine

    Hedyeh M. Golshan MD And Associates Inc.

    1850 N Riverside Ave Ste 230, 
    Rialto, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Hedyeh Golshan is a primary care provider, practicing in Internal Medicine in Rialto, California. Dr. Golshan is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. Her top areas of expertise are Osteomyelitis in Children, Type 2 Diabetes (T2D), Sitosterolemia, and Seasonal Affective Disorder (SAD).

    Experienced in Hypothyroidism
    Family Medicine
    Experienced in Hypothyroidism
    Family Medicine

    Vituity Physician Services PC

    16888 Baseline Ave, 
    Fontana, CA 
     (4.2 miles away)
    Languages Spoken:
    English

    Nguyen-phuong Pham is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Pham is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Familial Hypertension, and Hypertension.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine

    Office

    16465 Sierra Lakes Pkwy Ste 200, 
    Fontana, CA 
     (4.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Faramarz Alav is a primary care provider, practicing in Internal Medicine in Fontana, California. Dr. Alav is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. His top areas of expertise are Type 2 Diabetes (T2D), Spontaneous Coronary Artery Dissection (SCAD), Familial Hypertension, and Hypertension.

    Experienced in Hypothyroidism
    Internal Medicine
    Experienced in Hypothyroidism
    Internal Medicine

    San Marcos Medical Group Inc.

    425 E Foothill Blvd, 
    Rialto, CA 
     (4.2 miles away)
    Languages Spoken:
    English

    Uma Rao is a primary care provider, practicing in Internal Medicine in Rialto, California. Dr. Rao is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. Her top areas of expertise are Type 2 Diabetes (T2D), Hypothyroidism, Maturity Onset Diabetes of the Young, and Obesity in Children.

    Experienced in Hypothyroidism
    Family Medicine
    Experienced in Hypothyroidism
    Family Medicine

    Lasalle Medical Associates Rialto

    790 E Foothill Blvd, 
    Rialto, CA 
     (4.7 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Offers Telehealth

    Jennifer D'sa is a primary care provider, practicing in Family Medicine in Rialto, California. Dr. D'sa has been practicing medicine for over 18 years and is rated as an Experienced provider by MediFind in the treatment of Hypothyroidism. Her top areas of expertise are Obesity in Children, Food Allergy, Osteomyelitis in Children, and Type 2 Diabetes (T2D).

    Showing 1-20 of 312

    Last Updated: 02/22/2026

    What is the definition of Hypothyroidism?

    Hypothyroidism is a condition in which the thyroid gland does not make enough thyroid hormone. This condition is often called underactive thyroid.

    When should I see a Hypothyroidism 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 Hypothyroidism 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 Hypothyroidism 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 Hypothyroidism 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 Hypothyroidism 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 Hypothyroidism doctor search results page. 

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

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

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