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Dr. John Duc Nguyen, MD

Fontana, CA

24 Years of Experience

Accepting patients

    Who is Dr. Nguyen, Internist in Fontana, CA?

    Dr. John Duc Nguyen, MD is an Internist, who primarily practices in Fontana, CA with 1 additional practice location. He has been practicing for over 24 years and is board certified by the American Board of Internal Medicine. Dr. Nguyen completed his residency at Va Greater La Hlthcare Sys, Internal Medicine. Dr. Nguyen is fluent in English and Vietnamese, and is currently seeing new patients. Dr. Nguyen’s practice accepts Cigna, Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nguyen’s office at (909) 822-1164.

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

    • Residency: Va Greater La Hlthcare Sys, Internal Medicine

    • Medical School: University of Mn Med Sch-Minneapolis, Minneapolis Mn

    Is Dr. Nguyen board certified in Internist?

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

    What languages does Dr. Nguyen speak?

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

    • English

    • Vietnamese

    What conditions does Dr. Nguyen treat?

    As a Internist, Dr. Nguyen 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. Nguyen. 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 Blood Pressure Check (Normal Findings)
    • Vital Signs
    • Normal BP reading
    • Blood pressure screening, all clear
    • Healthy blood pressure check

    ICD-10 Codes:

    • Z0130: Encounter for examination of blood pressure without abnormal findings

    Also known as:

    • Depression Screening
    • Other Mental Health Screening
    • Depression
    • Health Screening
    • Mental Health Screening
    • Depression Test
    • Mental Health Check for Depression
    • Mood Disorder Screening
    • Behavioral Disorder Screening
    • Psychological Evaluation
    • Mental Wellness Check

    ICD-10 Codes:

    • Z1331: Encounter for screening for depression
    • Z1339: Encounter for screening examination for other mental health and behavioral disorders

    Also known as:

    • General Disorder Screening
    • General Health Screening
    • Health Screening
    • General Health Check
    • Disease Screening
    • Medical Disorder Screening
    • Routine Check-up
    • Preventive Health Exam
    • Wellness Screening

    ICD-10 Codes:

    • Z1389: Encounter for screening for other disorder
    • Z139: Encounter for screening, unspecified

    Also known as:

    • Exercise Counseling
    • Fitness Coaching
    • Physical Activity Guidance
    • Exercise Prescription

    ICD-10 Codes:

    • Z7182: Exercise counseling

    Also known as:

    • Overweight
    • Healthy Weight
    • Body Weight
    • High Body Mass Index
    • Excess Weight
    • Weight Management Issues
    • Normal Weight
    • Body Mass Index
    • Optimal Weight

    ICD-10 Codes:

    • Z6829: Body mass index [BMI] 29.0-29.9, adult
    • Z6827: Body mass index [BMI] 27.0-27.9, adult
    • Z6826: Body mass index [BMI] 26.0-26.9, adult
    • Z6824: Body mass index [BMI] 24.0-24.9, adult

    Also known as:

    • Severe Obesity
    • Obesity
    • Body Weight
    • Helping Your Child Who Is Overweight
    • Take Charge of Your Health: A Guide for Teenagers
    • Understanding Adult Overweight & Obesity
    • Morbid Obesity
    • Extreme Obesity
    • High Body Mass Index
    • Excess Body Fat
    • Weight Management Issues
    • Class 3 Obesity

    ICD-10 Codes:

    • Z684: Body mass index [BMI] 40 or greater, adult
    • Z6830: Body mass index [BMI] 30.0-30.9, adult
    • E6601: Morbid (severe) obesity due to excess calories
    • Z6831: Body mass index [BMI] 31.0-31.9, adult

    Also known as:

    • Type 2 Diabetes with Peripheral Artery Disease
    • Diabetes Complicationss
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetic Blood Vessel Disease
    • PAD from Diabetes
    • Circulation Problems from Diabetes
    • Diabetes Mellitus Complications
    • Diabetes Related Health Problems
    • Advanced Diabetes

    ICD-10 Codes:

    • E1151: Type 2 diabetes mellitus with diabetic peripheral angiopathy without gangrene
    • E1169: Type 2 diabetes mellitus with other specified complication

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

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

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

    • Adult BMI 28.0-28.9
    • Body Weight
    • Overweight BMI
    • Adult pre-obesity BMI
    • Higher than normal BMI

    ICD-10 Codes:

    • Z6828: Body mass index [BMI] 28.0-28.9, adult

    Also known as:

    • COPD
    • Chronic Obstructive Pulmonary Disease
    • Chronic Lung Disease
    • Emphysema and Chronic Bronchitis

    ICD-10 Codes:

    • J449: Chronic obstructive pulmonary disease, unspecified

    Which procedures does Dr. Nguyen perform as a Internist?

    As a Internist, procedures performed by an Dr. John Duc Nguyen may include:

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

    Does Dr. Nguyen accept my insurance?

    Dr. Nguyen accepts most major insurance plans. Important: Please call our office at (909) 822-1164 before your appointment to verify that your specific plan and network are accepted.

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

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

    Top Insurances

    • Alignment Health Plan

    • All Other Third Party

    • Blue Shield of California

    • CVS Health (formerly Aetna)

    • Express Scripts

    • Inland Empire

    • Medicare

    • Molina

    • Other Health Care Provider

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Nguyen's office located?

    Dr. John Duc Nguyen's Primary Practice

    8110 Mango Ave Ste 104

    Fontana, CA 92335

    (909) 822-1164

    Get Directions

    Dr. John Duc Nguyen's Practice 2

    2150 N Waterman Ave Ste 102

    San Bernardino, CA 92404

    Get Directions

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

    Dr. Nguyen's National Provider Identifier (NPI) number is 1427018456.

    What common questions do patients ask about Dr. Nguyen?

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

    What is Dr. John Duc Nguyen's specialty?

    Dr. Nguyen is a Internist near Fontana, 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. Nguyen to book an appointment today.

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

    No, Nguyen is not affiliated with a Castle Connolly Top Hospital. 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 John Duc Nguyen accepting new patients in Fontana, CA?

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

    Does Dr. John Duc Nguyen offer online booking?

    Please contact Dr. Nguyen's office at (909) 822-1164 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Duc Nguyen?

    Please contact Dr. Nguyen's office at (909) 822-1164 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Duc Nguyen have?

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

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