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Dr. Gregory Simsarian, MD

Dr. Gregory Simsarian, MD

Laguna Hills, CA

33 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Simsarian, Emergency Medicine Specialist in Laguna Hills, CA?

    Dr. Gregory Simsarian, MD is an Emergency Medicine Specialist, who primarily practices in Laguna Hills, CA. He has been practicing for over 33 years and is board certified by the American Board of Emergency Medicine. Dr. Simsarian graduated from Keck School of Medicine of the University of Southern California and completed his residency at Henry Ford Hosp, Emergency Medicine. Dr. Simsarian is fluent in English, and is currently seeing new patients. Dr. Simsarian’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. Simsarian’s office at (714) 837-4500.

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

    • Residency: Henry Ford Hosp, Emergency Medicine | Henry Ford Hospital Program

    • Medical School: University of Southern Ca Sch of Med, Los Angeles Ca | Keck School of Medicine of the University of Southern California

    Is Dr. Simsarian board certified in Emergency Medicine Specialist?

    Yes, Dr. Gregory Simsarian, MD is board certified by the American Board of Emergency Medicine

    What languages does Dr. Simsarian speak?

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

    • English

    What conditions does Dr. Simsarian treat?

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

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

    ICD-10 Codes:

    • R0789: Other chest pain

    Also known as:

    • Fainting
    • Syncope
    • Passing out
    • Collapse

    ICD-10 Codes:

    • R55: Syncope and collapse

    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:

    • Dehydration
    • Low Sodium Levels
    • Fluid and Electrolyte Balance
    • Sodium
    • Lack of Fluids
    • Fluid Loss
    • Body Water Depletion
    • Hyponatremia
    • Low Blood Sodium
    • Sodium Deficiency

    ICD-10 Codes:

    • E860: Dehydration
    • E871: Hypo-osmolality and hyponatremia

    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:

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

    ICD-10 Codes:

    • R531: Weakness

    Also known as:

    • Viral Infection
    • Virus Infection
    • Viral Illness
    • Common Virus

    ICD-10 Codes:

    • B349: Viral infection, 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:

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

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Sepsis
    • Blood Poisoning
    • Septicemia
    • Systemic Bacterial Infection

    ICD-10 Codes:

    • A419: Sepsis, unspecified organism

    Also known as:

    • Acute Kidney Failure
    • Kidney Failure
    • Acute Renal Failure
    • Sudden Kidney Failure

    ICD-10 Codes:

    • N179: Acute kidney failure, unspecified

    Also known as:

    • Atrial Fibrillation
    • Afib
    • A-fib
    • Irregular heart rhythm

    ICD-10 Codes:

    • I480: Paroxysmal atrial fibrillation

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Non-Infectious Gastroenteritis and Colitis
    • Digestive Disease
    • Inflammation of Stomach and Intestines
    • Non-Bacterial Colitis
    • Gut Inflammation

    ICD-10 Codes:

    • K529: Noninfective gastroenteritis and colitis, unspecified

    Also known as:

    • Headache
    • Head pain
    • Cephalalgia
    • Tension headache

    ICD-10 Codes:

    • R519: Headache, unspecified

    Also known as:

    • Dizziness
    • Dizziness and Vertigo
    • Lightheadedness
    • Giddiness
    • Vertigo

    ICD-10 Codes:

    • R42: Dizziness and giddiness

    Also known as:

    • Acute Respiratory Failure with Low Oxygen
    • Respiratory Failure
    • Sudden lung failure with low oxygen
    • Hypoxic respiratory failure
    • Acute breathing failure with hypoxia

    ICD-10 Codes:

    • J9601: Acute respiratory failure with hypoxia

    Also known as:

    • Pneumonia
    • Lung Infection
    • Chest Infection
    • Pneumonitis

    ICD-10 Codes:

    • J189: Pneumonia, unspecified organism

    Also known as:

    • High Blood Pressure Heart and Kidney Disease with Heart Failure
    • Chronic Kidney Disease
    • Heart Failure
    • High Blood Pressure
    • Hypertensive Cardiorenal Syndrome
    • Heart and Kidney Failure from High Blood Pressure

    ICD-10 Codes:

    • I130: Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

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

    As a Emergency Medicine Specialist, procedures performed by an Dr. Gregory Simsarian may include:

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

    Does Dr. Simsarian accept my insurance?

    Dr. Simsarian accepts most major insurance plans. Important: Please call our office at (714) 837-4500 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Simsarian accept in Laguna Hills, CA?

    Dr. Simsarian in Laguna Hills, 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

    • CalOptima

    • Kaiser Permanente

    • Medicare

    • Monarch HealthCare

    • OptumRx

    • Other Health Care Provider

    • Other Provider Networks

    • Scan Health Plan

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Simsarian's office located?

    Dr. Gregory Simsarian's Primary Practice

    24451 Health Center Dr

    Laguna Hills, CA 92653

    (714) 837-4500

    Get Directions

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

    Dr. Simsarian's National Provider Identifier (NPI) number is 1144250713.

    What common questions do patients ask about Dr. Simsarian?

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

    What is Dr. Gregory Simsarian's specialty?

    Dr. Simsarian is a Emergency Medicine Specialist near Laguna Hills, 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. Simsarian to book an appointment today.

    Is this Dr. Gregory Simsarian affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Simsarian is affiliated with Kaiser Permanente Orange County - Anaheim 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 Gregory Simsarian accepting new patients in Laguna Hills, CA?

    Yes, Dr. Gregory Simsarian is accepting new patients at this time.

    Does Dr. Gregory Simsarian offer online booking?

    Please contact Dr. Simsarian's office at (714) 837-4500 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Gregory Simsarian?

    Please contact Dr. Simsarian's office at (714) 837-4500 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Gregory Simsarian have?

    Dr. Gregory Simsarian is certified by the American Board of Emergency Medicine.

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