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Dr. Oscar Casillas, MD

Emergency Medicine Specialist

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. 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, Medicare 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 as an 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 an Emergency Medicine Specialist like Dr. Casillas typically treat?

    As an 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. Learn more about our claims-based healthcare methodology.

    Also known as:

    • Upper Middle Abdominal Pain
    • Abdominal Pain
    • Epigastric pain
    • Pain below breastbone
    • Upper stomach pain

    ICD-10 Codes:

    • R1013: Epigastric 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

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

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

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

    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

    • Blue Shield of California

    • Centene Corporation

    • City of Los Angeles

    • CommonSpirit Health

    • Heritage Health

    • Medicare

    • Molina Healthcare

    • Other Health Care Provider

    • State of California

    • UnitedHealth Group

    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

    Emergency Department

    1250 16th St

    Santa Monica, CA 90404

    Get Directions

    What is Dr. Casillas's NPI number?A 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 an Emergency Medicine Specialist near Los Angeles, CA.

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

    Yes, Dr. Casillas is affiliated with Memorial Hospital Of Gardena, Dignity Health - California Hospital Medical Center, Dignity Health - St. Mary Medical Center, Pih Health Good Samaritan Hospital, Los Angeles General Medical Center, San Gabriel Valley 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 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 Dr. 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' office at (424) 259-8401 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Oscar Casillas?

    Please contact Dr. Casillas' office at (424) 259-8401 to schedule an appointment.

    Where is Dr. Casillas' office located?

    Dr. Casillas' offices are located in Los Angeles, CA and Santa Monica, CA.

    Which board certifications does Dr. Oscar Casillas have?

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