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Dr. Leo Hsu, MD

O Fallon, MO

Accepting patients
Telehealth

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Hsu, Emergency Medicine Specialist in O Fallon, MO?

    Dr. Leo Hsu, MD is an Emergency Medicine Specialist, who primarily practices in O Fallon, MO with 2 additional practice locations. He is board certified. Dr. Hsu graduated from Saint Louis University School of Medicine. Dr. Hsu is fluent in English, and is currently seeing new patients. Dr. Hsu’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Hsu’s office at (866) 916-5259.

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

    • Medical School: Saint Louis University School of Medicine

    Is Dr. Hsu board certified as an Emergency Medicine Specialist?

    Yes, Dr. Leo Hsu, MD is board certified by the American Board of Emergency Medicine

    What languages does Dr. Hsu speak?

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

    • English

    What conditions does an Emergency Medicine Specialist like Dr. Hsu typically treat?

    As an Emergency Medicine Specialist, Dr. Hsu 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. Hsu. 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:

    • 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:

    • Head Injury
    • Head Injuries
    • Head Trauma
    • Cranial Injury
    • Brain Injury

    ICD-10 Codes:

    • S0990XA: Unspecified injury of head, initial encounter

    Also known as:

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

    ICD-10 Codes:

    • R0789: Other chest pain

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Upper body pain

    ICD-10 Codes:

    • R079: Chest pain, 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
    • Stomach Ache
    • Belly Pain
    • Stomach Pain

    ICD-10 Codes:

    • R109: Unspecified abdominal pain

    Also known as:

    • Nausea and Vomiting
    • Feeling Sick and Throwing Up
    • Stomach Flu Symptoms
    • Queasy and Vomiting

    ICD-10 Codes:

    • R112: Nausea with vomiting, unspecified

    What procedures does an Emergency Medicine Specialist like Dr. Hsu typically perform?

    As an Emergency Medicine Specialist, procedures performed by Dr. Leo Hsu may include:

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

    Does Dr. Hsu accept my insurance?

    Dr. Hsu accepts most major insurance plans. Important: Please call our office at (866) 916-5259 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Hsu accept in O Fallon, MO?

    Dr. Hsu in O Fallon, MO accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Allied Benefit Systems

    • Blue Cross Blue Shield of Michigan

    • Centene Corporation

    • Elevance Health Inc. (formerly Anthem)

    • Health Care Service Corporation

    • Humana

    • Medicare

    • Oscar Health

    • UnitedHealth Group

    • Unknown

    View All Insurances

    Where is Dr. Hsu's office located?

    Dr. Leo Hsu also offers virtual visits

    Dr. Leo Hsu's Primary Practice

    2 Progress Point Pkwy

    O Fallon, MO 63368

    (866) 916-5259

    Get Directions

    Dr. Leo Hsu's Practice 2

    10 Hospital Dr

    Cottleville, MO 63376

    Get Directions

    Dr. Leo Hsu's Practice 3

    5595 Pershing Ave

    Saint Louis, MO 63112

    Get Directions

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

    Dr. Hsu's National Provider Identifier (NPI) number is 1215965702.

    What common questions do patients ask about Dr. Hsu?

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

    What is Dr. Leo Hsu's specialty?

    Dr. Hsu is a Emergency Medicine Specialist near O Fallon, MO.

    What does an Emergency Medicine Specialist do?

    An emergency physician is dedicated to making prompt decision and taking necessary actions essential for preventing death or additional disabilities. This role encompasses guiding emergency medical technicians in pre-hospital environments as well as providing care within the emergency department. The emergency physician is responsible for the immediate identification, evaluation, treatment, stabilization, and arrangement of a diverse array of adult and pediatric patients facing acute illnesses and injuries.

    Is this Dr. Leo Hsu affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Hsu is affiliated with Christian Hospital, Wakemed Raleigh Campus, Wakemed Cary Hospital, St. Luke's Hospital - Chesterfield, Mo 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 Emergency Medicine Specialist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Emergency Medicine Specialist. 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 Leo Hsu accepting new patients in O Fallon, MO?

    Yes, Dr. Leo Hsu is accepting new patients at this time.

    Does Dr. Leo Hsu offer online booking?

    Please contact Dr. Hsu's office at (866) 916-5259 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Leo Hsu?

    Please contact Dr. Hsu's office at (866) 916-5259 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Leo Hsu have?

    Dr. Leo Hsu is certified by the American Board of Emergency 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>