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Dr. John Gilbert, MD

Dr. John Gilbert, MD

Fullerton, CA

36 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Gilbert, Endocrinologist in Fullerton, CA?

    Dr. John Gilbert, MD is an Endocrinologist, who primarily practices in Fullerton, CA with 2 additional practice locations. He has been practicing for over 36 years and is board certified. Dr. Gilbert completed his residency at Univ Hosp-Suny Stony Brook, Endocrinology, Diabetes & Metabolism St Mary Med Ctr, Internal Medicine. Dr. Gilbert is fluent in English and Spanish, and is currently seeing new patients. Dr. Gilbert’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Gilbert’s office at (714) 446-5640.

    Where did Dr. Gilbert go to medical school and complete their residency?

    • Residency: Univ Hosp-Suny Stony Brook, Endocrinology, Diabetes & Metabolism St Mary Med Ctr, Internal Medicine

    • Medical School: Suny-Hlth Sci Ctr At Brooklyn, Coll of Med, Brooklyn Ny

    Is Dr. Gilbert board certified as an Endocrinologist?

    Yes, Dr. John Gilbert, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Gilbert speak?

    Dr. Gilbert and their clinical team can communicate with patients in the following languages:

    • English

    • Spanish

    What conditions does an Endocrinologist like Dr. Gilbert typically treat?

    As an Endocrinologist, Dr. Gilbert diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Gilbert. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Type 2 Diabetes with High Blood Sugar
    • Type 2 Diabetes with Other Circulation Problems
    • Diabetes Type 2
    • Hyperglycemia
    • Type 2 diabetes
    • Diabetes Complicationss
    • Diabetic Hyperglycemia
    • High Blood Glucose
    • High Sugar Levels
    • Diabetic Vascular Complications
    • Diabetes Heart and Blood Vessel Problems
    • Diabetes Mellitus Circulatory Issues
    • Diabetes Mellitus Complications
    • Diabetes Related Health Problems
    • Advanced Diabetes

    ICD-10 Codes:

    • E1165: Type 2 diabetes mellitus with hyperglycemia
    • E1159: Type 2 diabetes mellitus with other circulatory complications
    • E1169: Type 2 diabetes mellitus with other specified complication

    Also known as:

    • Nontoxic Multinodular Goiter
    • Thyroid Disease
    • Multinodular Goiter
    • Lumpy Enlarged Thyroid

    ICD-10 Codes:

    • E042: Nontoxic multinodular goiter

    Also known as:

    • Hashimoto's Disease
    • Thyroid Disease
    • Hashimoto's disease
    • Autoimmune thyroiditis
    • Chronic lymphocytic thyroiditis
    • Hashimoto's thyroiditis

    ICD-10 Codes:

    • E063: Autoimmune thyroiditis

    Also known as:

    • High Blood Pressure
    • Hypertension
    • Primary Hypertension
    • Essential Hypertension

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    What procedures does an Endocrinologist like Dr. Gilbert typically perform?

    As an Endocrinologist, Dr. Gilbert performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Gilbert. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Thyroid Core Needle Biopsy
    • Percutaneous Thyroid Biopsy
    • Thyroid Nodule Biopsy
    • Needle Biopsy of Thyroid

    CPT Codes:

    • 60100: Biopsy thyroid, percutaneous core needle

    Also known as:

    • Ultrasound-Guided Fine Needle Biopsy
    • Biopsy
    • Ultrasound
    • FNA Biopsy with Ultrasound
    • Image-Guided Biopsy
    • Fine Needle Aspiration
    • First Lesion Biopsy

    CPT Codes:

    • 10005: Fine needle aspiration biopsy, including ultrasound guidance; first lesion

    Does Dr. Gilbert accept my insurance?

    Dr. Gilbert accepts most major insurance plans. Important: Please call our office at (714) 446-5640 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Gilbert accept in Fullerton, CA?

    Dr. Gilbert in Fullerton, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Centene Corporation

    • CVS Health (formerly Aetna)

    • HealthSmart

    • Medicare

    • Other Provider Networks

    • St. Joseph Health System (CA)

    • State of California

    • UnitedHealth Group

    • Unknown

    View All Insurances

    Where is Dr. Gilbert's office located?

    Dr. John Gilbert's Primary Practice

    100 E Valencia Mesa Dr Ste 105

    Fullerton, CA 92835

    (714) 446-5640

    Get Directions

    Dr. John Gilbert's Practice 2

    4300 Rose Dr

    Yorba Linda, CA 92886

    Get Directions

    Dr. John Gilbert's Practice 3

    1950 Sunny Crest Dr Ste 2900

    Fullerton, CA 92835

    Get Directions

    What is Dr. Gilbert's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Gilbert's National Provider Identifier (NPI) number is 1588650667.

    What common questions do patients ask about Dr. Gilbert?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Gilbert

    What is Dr. John Gilbert's specialty?

    Dr. Gilbert is a Endocrinologist near Fullerton, CA.

    What does an Endocrinologist do?

    An internist specializing in disorders of the endocrine glands, including the thyroid and adrenal glands. This specialist also manages a range of conditions such as diabetes, metabolic and nutritional disorders, obesity, pituitary disorders, and menstrual and sexual health issues.

    Is this Dr. John Gilbert affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Gilbert is affiliated with Providence St. Jude Medical Center, Providence St. Jude Medical Center, Uci Medical Center, Hoag Hospital Newport Beach, Providence Saint John's Health Center, Uci Health - Placentia Linda which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    When to see an Endocrinologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Endocrinologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is John Gilbert accepting new patients in Fullerton, CA?

    Yes, Dr. John Gilbert is accepting new patients at this time.

    Does Dr. John Gilbert offer online booking?

    Please contact Dr. Gilbert's office at (714) 446-5640 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Gilbert?

    Please contact Dr. Gilbert's office at (714) 446-5640 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Gilbert have?

    Dr. John Gilbert is certified by the American Board of Internal Medicine.

    <section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>