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Dr. Billy Zhang, MD

Fullerton, CA

Accepting patients

    Who is Dr. Zhang, Internist in Fullerton, CA?

    Dr. Billy Zhang, MD is an Internist, who primarily practices in Fullerton, CA with 2 additional practice locations. He is board certified. Dr. Zhang is fluent in English, and is currently seeing new patients. Dr. Zhang’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Zhang’s office at (714) 263-9279.

    What languages does Dr. Zhang speak?

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

    • English

    What conditions does Dr. Zhang treat?

    As a Internist, Dr. Zhang 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. Zhang. 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.

    Also known as:

    • Routine Adult Health Checkup
    • Health Checkup
    • Adult physical exam
    • Annual wellness visit for adults
    • General adult medical exam

    ICD-10 Codes:

    • Z0000: Encounter for general adult medical examination without abnormal findings

    Also known as:

    • Immunization Visit
    • Vaccines
    • Vaccination appointment
    • Shot visit
    • Immunization encounter

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

    • Severe Obesity
    • Overweight
    • Class 1 Obesity
    • Class 2 Obesity
    • Obesity
    • Helping Your Child Who Is Overweight
    • Take Charge of Your Health: A Guide for Teenagers
    • Understanding Adult Overweight & Obesity
    • Body Weight
    • Morbid Obesity
    • Extreme Obesity
    • Class 3 Obesity
    • Excess Weight
    • High BMI (Overweight)
    • Pre-Obesity
    • Mild Obesity
    • Moderate Obesity
    • BMI Class 1 Obesity
    • Significant Obesity
    • Severe Obesity (Class 2)
    • BMI Class 2 Obesity

    ICD-10 Codes:

    • E6601: Morbid (severe) obesity due to excess calories
    • E663: Overweight
    • E66811: Obesity, class 1
    • E66812: Obesity, class 2

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Type 2 Diabetes with High Blood Sugar
    • Type 2 Diabetes
    • Diabetes Type 2
    • Hyperglycemia
    • Type 2 diabetes
    • Diabetes Complicationss
    • Diabetic Hyperglycemia
    • High Blood Glucose
    • High Sugar Levels
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes
    • Diabetes Mellitus Complications
    • Diabetes Related Health Problems
    • Advanced Diabetes

    ICD-10 Codes:

    • E1165: Type 2 diabetes mellitus with hyperglycemia
    • E119: Type 2 diabetes mellitus without complications
    • E1169: Type 2 diabetes mellitus with other specified complication

    Also known as:

    • Depression Screening
    • Depression
    • Health Screening
    • Depression Test
    • Mental Health Check for Depression
    • Mood Disorder Screening

    ICD-10 Codes:

    • Z1331: Encounter for screening for depression

    Also known as:

    • Low Back Pain
    • Back Pain
    • Lumbago
    • Lower Back Ache
    • Backache

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Prediabetes
    • Insulin Resistance & Prediabetes
    • Borderline diabetes
    • Insulin resistance
    • High blood sugar (not yet diabetes)

    ICD-10 Codes:

    • R7303: Prediabetes

    Also known as:

    • Obstructive Sleep Apnea
    • Sleep Apnea
    • Obstructive sleep apnea
    • OSA
    • Blocked airway during sleep
    • Snoring and gasping during sleep

    ICD-10 Codes:

    • G4733: Obstructive sleep apnea (adult) (pediatric)

    Also known as:

    • Adjustment Disorder with Mixed Anxiety and Depression
    • Mental Disorder
    • Stress-Related Anxiety and Depression
    • Mixed Mood Adjustment Disorder
    • Emotional Distress from Stress

    ICD-10 Codes:

    • F4323: Adjustment disorder with mixed anxiety and depressed mood

    Also known as:

    • Generalized Anxiety Disorder
    • Anxiety
    • GAD
    • Chronic Worry
    • Excessive Worry Disorder

    ICD-10 Codes:

    • F411: Generalized anxiety disorder

    Also known as:

    • Hardening of the Arteries in the Heart without Chest Pain
    • Atherosclerosis
    • Coronary Artery Disease
    • Silent Coronary Artery Disease
    • Asymptomatic Atherosclerosis

    ICD-10 Codes:

    • I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris

    Also known as:

    • COVID-19
    • COVID-19 (Coronavirus Disease 2019)
    • Coronavirus Disease 2019
    • SARS-CoV-2 Infection
    • Novel Coronavirus

    ICD-10 Codes:

    • U071: COVID-19

    Also known as:

    • Mixed High Cholesterol and Triglycerides
    • Cholesterol
    • Triglycerides
    • Mixed hyperlipidemia
    • Combined hyperlipidemia
    • High lipids

    ICD-10 Codes:

    • E782: Mixed hyperlipidemia

    Also known as:

    • Urinary and Genital Symptoms
    • Urine and Urination
    • Genitourinary signs
    • Urogenital symptoms
    • Reproductive and urinary issues

    ICD-10 Codes:

    • R399: Unspecified symptoms and signs involving the genitourinary system

    Which procedures does Dr. Zhang perform as a Internist?

    As a Internist, procedures performed by an Dr. Billy Zhang may include:

    For detailed information, please contact Dr. Zhang's office.

    Does Dr. Zhang accept my insurance?

    Dr. Zhang accepts most major insurance plans. Important: Please call our office at (714) 263-9279 before your appointment to verify that your specific plan and network are accepted.

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

    Dr. Zhang 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

    • Blue Shield of California

    • CalOptima

    • Centene

    • CVS Health (formerly Aetna)

    • Medicare

    • Other Health Care Provider

    • St. Joseph Health System (CA)

    • State of California

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Zhang's office located?

    Dr. Billy Zhang's Primary Practice

    1950 Sunny Crest Dr Ste 2900

    Fullerton, CA 92835

    (714) 263-9279

    Get Directions

    Dr. Billy Zhang's Practice 2

    100 E Valencia Mesa Dr Ste 105

    Fullerton, CA 92835

    Get Directions

    Dr. Billy Zhang's Practice 3

    5630 E Santa Ana Canyon Rd

    Anaheim, CA 92807

    Get Directions

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

    Dr. Zhang's National Provider Identifier (NPI) number is 1871087957.

    What common questions do patients ask about Dr. Zhang?

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

    What is Dr. Billy Zhang's specialty?

    Dr. Zhang is a Internist near Fullerton, CA.

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

    Contact Dr. Zhang to book an appointment today.

    Is this Dr. Billy Zhang affiliated with a ranked Castle Connolly Top Hospital?

    No, Zhang is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Providence St. Joseph Hospital Orange. Castle Connolly Top Hospitals 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

    Where can I learn more about Internist?

    Explore Internist with 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 Billy Zhang accepting new patients in Fullerton, CA?

    Yes, Dr. Billy Zhang is accepting new patients at this time.

    Does Dr. Billy Zhang offer online booking?

    Please contact Dr. Zhang's office at (714) 263-9279 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Billy Zhang?

    Please contact Dr. Zhang's office at (714) 263-9279 for information regarding telehealth appointment availability or for scheduling assistance.

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