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Dr. William Yoon, DO

Dr. William Yoon, DO

Fontana, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Yoon, Family Medicine Specialist in Fontana, CA?

    Dr. William Yoon, DO is a Family Medicine Specialist, who primarily practices in Fontana, CA with 1 additional practice location. He is board certified by the American Board of Family Medicine. Dr. Yoon is fluent in English, and is currently seeing new patients. Dr. Yoon’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Yoon’s office at (909) 427-3910.

    Is Dr. Yoon board certified in Family Medicine Specialist?

    Yes, Dr. William Yoon, DO is board certified by the American Board of Family Medicine

    What languages does Dr. Yoon speak?

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

    • English

    What conditions does Dr. Yoon treat?

    As a Family Medicine Specialist, Dr. Yoon 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. Yoon. 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:

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

    ICD-10 Codes:

    • Z23: Encounter for immunization

    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:

    • Personal Choice Not to Vaccinate
    • Vaccine Refusal
    • Patient Declined Vaccination
    • Unvaccinated by Choice

    ICD-10 Codes:

    • Z2820: Immunization not carried out because of patient decision for unspecified reason

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Type 2 Diabetes
    • Type 2 Diabetes with High Blood Sugar
    • Diabetes Type 2
    • Type 2 diabetes
    • Hyperglycemia
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes
    • Diabetic Hyperglycemia
    • High Blood Glucose
    • High Sugar Levels

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications
    • E1165: Type 2 diabetes mellitus with hyperglycemia

    Also known as:

    • Allergic Rhinitis
    • Allergy
    • Nasal allergies
    • Allergy rhinitis
    • Chronic runny nose

    ICD-10 Codes:

    • J309: Allergic rhinitis, unspecified

    Also known as:

    • Follow-up After Treatment (Non-Cancer)
    • Post-Treatment Check-up
    • Aftercare Visit
    • Recovery Monitoring Exam

    ICD-10 Codes:

    • Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

    Also known as:

    • General Health Screening
    • Health Screening
    • Routine Check-up
    • Preventive Health Exam
    • Wellness Screening

    ICD-10 Codes:

    • Z139: Encounter for screening, unspecified

    Also known as:

    • Urinary Tract Infection
    • UTI
    • Bladder infection
    • Kidney infection
    • Urine infection

    ICD-10 Codes:

    • N390: Urinary tract infection, site not specified

    Also known as:

    • Abdominal Pain
    • Upper Middle Abdominal Pain
    • Stomach Ache
    • Belly Pain
    • Stomach Pain
    • Epigastric pain
    • Pain below breastbone
    • Upper stomach pain

    ICD-10 Codes:

    • R109: Unspecified abdominal pain
    • R1013: Epigastric pain

    Also known as:

    • Tuberculosis Screening
    • TB test
    • PPD test
    • Tuberculosis exposure check

    ICD-10 Codes:

    • Z111: Encounter for screening for respiratory tuberculosis

    Also known as:

    • Chronic Kidney Disease
    • Helping Your Child Adapt to Life with Chronic Kidney Disease
    • Mineral & Bone Disorder in Chronic Kidney Disease
    • CKD
    • Long-Term Kidney Disease

    ICD-10 Codes:

    • N189: Chronic kidney disease, unspecified

    Also known as:

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

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Other Chronic Pain Condition
    • Chronic Pain
    • Various chronic pain
    • Unspecified long-term pain
    • Persistent pain disorders

    ICD-10 Codes:

    • G8929: Other chronic pain

    Also known as:

    • Common Cold
    • Upper Respiratory Infection
    • Head Cold
    • Cold Symptoms

    ICD-10 Codes:

    • J069: Acute upper respiratory infection, unspecified

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Pectoral pain

    ICD-10 Codes:

    • R0789: Other chest pain

    Also known as:

    • Anemia
    • Low Red Blood Cell Count
    • Low Hemoglobin
    • Iron deficiency

    ICD-10 Codes:

    • D649: Anemia, unspecified

    Also known as:

    • Obesity
    • Take Charge of Your Health: A Guide for Teenagers
    • Excess Weight
    • Being Overweight
    • High BMI

    ICD-10 Codes:

    • E669: Obesity, unspecified

    Which procedures does Dr. Yoon perform as a Family Medicine Specialist?

    As a Family Medicine Specialist, procedures performed by a Dr. William Yoon may include:

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

    Does Dr. Yoon accept my insurance?

    Dr. Yoon accepts most major insurance plans. Important: Please call our office at (909) 427-3910 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Yoon accept in Fontana, CA?

    Dr. Yoon in Fontana, 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

    • AlphaCare

    • Apex Healthcare

    • Contra Costa

    • Express Scripts

    • Inland Empire

    • Inland Faculty Medical Group, Inc

    • Kaiser Permanente

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Yoon's office located?

    Dr. William Yoon's Primary Practice

    9961 Sierra Ave

    Fontana, CA 92335

    (909) 427-3910

    Get Directions

    Dr. William Yoon's Practice 2

    2295 S Vineyard Ave

    Ontario, CA 91761

    Get Directions

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

    Dr. Yoon's National Provider Identifier (NPI) number is 1770650509.

    What common questions do patients ask about Dr. Yoon?

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

    What is Dr. William Yoon's specialty?

    Dr. Yoon is a Family Medicine Specialist near Fontana, CA. Family Medicine is a medical specialty focused on comprehensive healthcare for individuals and families. It is a broad field that integrates biological, clinical, and behavioral sciences. The scope of family medicine covers all ages, genders, organ systems, and disease conditions, offering a holistic approach to patient care. Contact Dr. Yoon to book an appointment today.

    Is this Dr. William Yoon affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Yoon is affiliated with Kaiser Permanente Fontana Medical Center, San Antonio Regional Hospital, Casa Colina Hospital And Centers For Healthcare 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

    Where can I learn more about Family Medicine Specialist?

    Explore Family Medicine Specialist 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 William Yoon accepting new patients in Fontana, CA?

    Yes, Dr. William Yoon is accepting new patients at this time.

    Does Dr. William Yoon offer online booking?

    Please contact Dr. Yoon's office at (909) 427-3910 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with William Yoon?

    Please contact Dr. Yoon's office at (909) 427-3910 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. William Yoon have?

    Dr. William Yoon is certified by the American Board of Family Medicine.

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