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Dr. Mark Calayag, MD

Pediatric Neurologist, Neurologist

Fontana, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Calayag, Pediatric Neurologist in Fontana, CA?

    Dr. Mark Calayag, MD is a Pediatric Neurologist, who primarily practices in Fontana, CA with 2 additional practice locations. Dr. Calayag is fluent in English, and is currently seeing new patients. Dr. Calayag’s practice accepts Kaiser Permanente and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Calayag’s office at (714) 456-6966.

    What languages does Dr. Calayag speak?

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

    • English

    What conditions does a Pediatric Neurologist like Dr. Calayag typically treat?

    As a Pediatric Neurologist, Dr. Calayag 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. Calayag. 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:

    • Benign Pituitary Tumor
    • Benign Tumor
    • Pituitary Disorder
    • Pituitary Tumor Treatment (PDQ)
    • Prolactinoma
    • Non-cancerous growth in pituitary gland
    • Pituitary adenoma

    ICD-10 Codes:

    • D352: Benign neoplasm of pituitary gland

    Also known as:

    • Other Pre-Procedure Examination
    • Various pre-op checks
    • Miscellaneous pre-surgery exams
    • Other pre-treatment assessments

    ICD-10 Codes:

    • Z01818: Encounter for other preprocedural examination

    Also known as:

    • Hydrocephalus
    • Water on the brain
    • Brain fluid buildup
    • Enlarged ventricles

    ICD-10 Codes:

    • G919: Hydrocephalus, unspecified

    Also known as:

    • Brain cysts
    • Brain Disease
    • Cerebral cysts
    • Arachnoid cysts
    • Intracranial cysts

    ICD-10 Codes:

    • G930: Cerebral cysts

    What procedures does a Pediatric Neurologist like Dr. Calayag typically perform?

    As a Pediatric Neurologist, procedures performed by Dr. Mark Calayag may include:

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

    Does Dr. Calayag accept my insurance?

    Dr. Calayag accepts most major insurance plans. Important: Please call our office at (714) 456-6966 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Calayag accept in Fontana, CA?

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

    Top Insurances

    • AlphaCare

    • City of Los Angeles

    • Kaiser Permanente

    • State of California

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    Where is Dr. Calayag's office located?

    Dr. Mark Calayag's Primary Practice

    9961 Sierra Ave

    Fontana, CA 92335

    (714) 456-6966

    Get Directions

    Dr. Mark Calayag's Practice 2

    101 The City Dr S Bldg 23

    Orange, CA 92868

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    Dr. Mark Calayag's Practice 3

    200 S Manchester Ave Ste 210

    Orange, CA 92868

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

    Dr. Calayag's National Provider Identifier (NPI) number is 1336373901.

    What common questions do patients ask about Dr. Calayag?

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

    What is Dr. Mark Calayag's specialty?

    Dr. Calayag is a Pediatric Neurologist near Fontana, CA.

    What does a Pediatric Neurologist do?

    A Child Neurologist specializes in diagnosing and treating neurological disorders in newborns, infants, young children, and adolescents, with expertise in managing conditions specific to these developmental stages.

    Is Dr. Mark Calayag affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Calayag is affiliated with Kaiser Permanente Fontana Medical Center, Kaiser Permanente Riverside Medical Center, Kaiser Permanente Orange County - Anaheim Medical Center, Kaiser Permanente Baldwin Park Medical Center, Kaiser Permanente Los Angeles Medical Center, Kaiser Permanente Panorama City 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 a Pediatric Neurologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Pediatric Neurologist. 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. Mark Calayag accepting new patients in Fontana, CA?

    Yes, Dr. Mark Calayag is accepting new patients at this time.

    Does Dr. Mark Calayag offer online booking?

    Please contact Dr. Calayag's office at (714) 456-6966 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Mark Calayag?

    Please contact Dr. Calayag's office at (714) 456-6966 to schedule an appointment.

    Where is Dr. Calayag's office located?

    Dr. Calayag's offices are located in Fontana, CA and Orange, CA.