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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Julio Castellan:

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Specialties & Research

Dr. Julio Castellan, MD is board certified in Pediatric Emergency Medicine.

Education & Awards

Dr. Castellan graduated from Universidad De San Carlos, Guatemala.


Dr. Castellan has 2 hospital affiliations:

  • Maimonides Medical Center 
  • Joe DiMaggio Children's Hospital 


  • Spanish

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Additional Information
Dr. Julio Cesar Castellan MD is a male Critical Care Specialist, has 30 years of experience and practices in Pediatric Emergency Medicine.
Where does Dr. Julio C. Castellan practice?
Dr. Julio Castellan has 1 office location.
Dr. Julio Castellan practices Pediatric Emergency Medicine near Brooklyn, NY.
See Brooklyn Emergency Physicians.