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Dr. Oscar Casillas, MD

Los Angeles, CA

15 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Casillas, Emergency Medicine Specialist in Los Angeles, CA?

    Dr. Oscar Casillas, MD is an Emergency Medicine Specialist, who primarily practices in Los Angeles, CA with 1 additional practice location. He has been practicing for over 15 years and is board certified by the American Board of Emergency Medicine. Dr. Casillas graduated from University of California and completed his residency at Los Angeles County-Harbor-UCLA Medical Center Program 1. Dr. Casillas is fluent in English, and is currently seeing new patients. Dr. Casillas’s practice accepts Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Casillas’s office at (424) 259-8401.

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

    • Residency: Los Angeles County-Harbor-UCLA Medical Center Program 1

    • Medical School: University of California

    Is Dr. Casillas board certified in Emergency Medicine Specialist?

    Yes, Dr. Oscar Casillas, MD is board certified by the American Board of Emergency Medicine

    What languages does Dr. Casillas speak?

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

    • English

    What conditions does Dr. Casillas treat?

    As a Emergency Medicine Specialist, Dr. Casillas 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. Casillas. 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:

    • Upper Middle Abdominal Pain
    • Pelvic Pain
    • Abdominal Pain
    • Epigastric pain
    • Pain below breastbone
    • Upper stomach pain
    • Lower belly pain
    • Pain in lower abdomen
    • Abdominal discomfort
    • Stomach Ache
    • Belly Pain
    • Stomach Pain

    ICD-10 Codes:

    • R1013: Epigastric pain
    • R1030: Lower abdominal pain, unspecified
    • R109: Unspecified abdominal pain

    Also known as:

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

    ICD-10 Codes:

    • R0789: Other chest pain

    Also known as:

    • Fever
    • High temperature
    • Pyrexia
    • Elevated body temperature

    ICD-10 Codes:

    • R509: Fever, unspecified

    Also known as:

    • Brief Psychotic Disorder
    • Psychotic Disorder
    • Short-term psychosis
    • Acute psychosis
    • Temporary mental break

    ICD-10 Codes:

    • F23: Brief psychotic disorder

    Also known as:

    • Asthma Flare-Up
    • Asthma
    • Asthma Attack
    • Acute Asthma Exacerbation
    • Worsening Asthma
    • Asthma Episode

    ICD-10 Codes:

    • J45901: Unspecified asthma with (acute) exacerbation

    Also known as:

    • Headache
    • Head pain
    • Cephalalgia
    • Tension headache

    ICD-10 Codes:

    • R519: Headache, unspecified

    Also known as:

    • Muscle Weakness
    • Muscle Disorder
    • Loss of strength
    • Fatigue
    • Muscle fatigue

    ICD-10 Codes:

    • R531: Weakness

    Also known as:

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

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Fainting
    • Syncope
    • Passing out
    • Collapse

    ICD-10 Codes:

    • R55: Syncope and collapse

    Also known as:

    • Pinched Nerve in Lower Back
    • Back Pain
    • Peripheral Nerve Disorder
    • Lumbar Radiculopathy
    • Lower Back Nerve Compression
    • Compressed Nerve in Lower Back

    ICD-10 Codes:

    • M5416: Radiculopathy, lumbar region

    Also known as:

    • Shortness of Breath
    • Breathing Problems
    • Difficulty breathing
    • Breathlessness
    • Dyspnea

    ICD-10 Codes:

    • R0600: Dyspnea, unspecified

    Also known as:

    • Hypertensive Urgency
    • High Blood Pressure
    • High Blood Pressure Urgency
    • Urgent High Blood Pressure

    ICD-10 Codes:

    • I160: Hypertensive urgency

    Also known as:

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

    ICD-10 Codes:

    • R079: Chest pain, unspecified

    Also known as:

    • Sore Throat
    • Acute pharyngitis
    • Throat inflammation
    • Acute throat infection

    ICD-10 Codes:

    • J029: Acute pharyngitis, unspecified

    Also known as:

    • Cough
    • Coughing
    • Persistent cough
    • Chronic cough

    ICD-10 Codes:

    • R059: Cough, unspecified

    Also known as:

    • Threatened Miscarriage
    • Miscarriage
    • Threatened Spontaneous Abortion
    • Signs of Miscarriage
    • Early Pregnancy Bleeding with Risk of Loss

    ICD-10 Codes:

    • O200: Threatened abortion

    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:

    • Sepsis
    • Blood Poisoning
    • Septicemia
    • Systemic Bacterial Infection

    ICD-10 Codes:

    • A419: Sepsis, unspecified organism

    Which procedures does Dr. Casillas perform as a Emergency Medicine Specialist?

    As a Emergency Medicine Specialist, procedures performed by an Dr. Oscar Casillas may include:

    For detailed information, please contact Dr. Casillas' office.

    Does Dr. Casillas accept my insurance?

    Dr. Casillas accepts most major insurance plans. Important: Please call our office at (424) 259-8401 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Casillas accept in Los Angeles, CA?

    Dr. Casillas in Los Angeles, 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

    • Centene

    • City of Los Angeles

    • Dignity Health / Catholic Health West

    • Medicaid

    • Medicare

    • Molina

    • State of California

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Casillas' office located?

    Dr. Oscar Casillas' Primary Practice

    1680 E 120th St

    Los Angeles, CA 90059

    (424) 259-8401

    Get Directions

    Dr. Oscar Casillas' Practice 2

    1250 16th St

    Santa Monica, CA 90404

    Get Directions

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

    Dr. Casillas's National Provider Identifier (NPI) number is 1902930399.

    What common questions do patients ask about Dr. Casillas?

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

    What is Dr. Oscar Casillas's specialty?

    Dr. Casillas is a Emergency Medicine Specialist near Los Angeles, CA. 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. Contact Dr. Casillas to book an appointment today.

    Is this Dr. Oscar Casillas affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Casillas is affiliated with Dignity Health - California Hospital Medical Center which is a Castle Connolly Top Hospital. 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 Emergency Medicine Specialist?

    Explore Emergency 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 Oscar Casillas accepting new patients in Los Angeles, CA?

    Yes, Dr. Oscar Casillas is accepting new patients at this time.

    Does Dr. Oscar Casillas offer online booking?

    Please contact Dr. Casillas's office at (424) 259-8401 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Oscar Casillas?

    Please contact Dr. Casillas's office at (424) 259-8401 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Oscar Casillas have?

    Dr. Oscar Casillas is certified by the American Board of Emergency Medicine.

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