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Dr. Les Liu, MD

Fontana, CA

25 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

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

    Dr. Les Liu, MD is an Internist, who primarily practices in Fontana, CA. He has been practicing for over 25 years and is board certified. Dr. Liu completed his residency at Univ Ca Irvine Med Ctr, Internal Medicine. Dr. Liu is fluent in English and Chinese, and is currently seeing new patients. Dr. Liu’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Liu’s office at (909) 427-3910.

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

    • Residency: Univ Ca Irvine Med Ctr, Internal Medicine

    • Medical School: Northwestern Uniiversity

    Is Dr. Liu board certified as an Internist?

    Yes, Dr. Les Liu, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Liu speak?

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

    • Chinese

    • English

    What conditions does an Internist like Dr. Liu typically treat?

    As an Internist, Dr. Liu 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. Liu. 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.

    Also known as:

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

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Type 2 Diabetes
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications

    Also known as:

    • Iron Deficiency Anemia
    • Anemia
    • Iron
    • Anemia from Iron Lack
    • Low Iron Anemia
    • Sideropenic Anemia

    ICD-10 Codes:

    • D509: Iron deficiency anemia, 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:

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

    ICD-10 Codes:

    • Z139: Encounter for screening, unspecified

    Also known as:

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

    ICD-10 Codes:

    • Z111: Encounter for screening for respiratory tuberculosis

    What procedures does an Internist like Dr. Liu typically perform?

    As an Internist, procedures performed by Dr. Les Liu may include:

    Please contact Dr. Liu's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.

    Does Dr. Liu accept my insurance?

    Dr. Liu 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. Liu accept in Fontana, CA?

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

    Top Insurances

    • Alignment Healthcare

    • All Other Third Party

    • AlphaCare

    • Elevance Health Inc. (formerly Anthem)

    • Heritage Health

    • Inland Faculty Medical Group, Inc

    • Kaiser Permanente

    • Medicare

    • Other Health Care Provider

    • Unknown

    View All Insurances

    Where is Dr. Liu's office located?

    Dr. Les Liu's Primary Practice

    9961 Sierra Ave

    Fontana, CA 92335

    (909) 427-3910

    Get Directions

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

    Dr. Liu's National Provider Identifier (NPI) number is 1386703999.

    What common questions do patients ask about Dr. Liu?

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

    What is Dr. Les Liu's specialty?

    Dr. Liu is a Internist near Fontana, CA.

    What does an Internist do?

    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.

    Is this Dr. Les Liu affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Liu is affiliated with Kaiser Permanente Fontana Medical Center, San Antonio Regional Hospital, Kaiser Permanente Riverside Medical Center, Kaiser Permanente South Bay Medical Center 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 Internist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Internist. 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 Les Liu accepting new patients in Fontana, CA?

    Yes, Dr. Les Liu is accepting new patients at this time.

    Does Dr. Les Liu offer online booking?

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

    How can I make an appointment with Les Liu?

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

    Which board certifications does Dr. Les Liu have?

    Dr. Les Liu is certified by the American Board of Internal Medicine.

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