Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Maria Isabel Castellanos, MD

Individual provider Pediatric Hematology & Oncology Physician · NPI 1881013795

Dr. Maria Isabel Castellanos, MD is a Pediatric Hematology & Oncology Physician in San Francisco, California. Works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2014
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

550 16th St
San Francisco, CA 94143-2549
Phone: (415) 476-3831
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 747 52nd St, Oakland, CA 94609-1809 — (510) 428-3000

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence A138549 (CA)
Pediatric Hematology & Oncology Physician Taxonomy 2080P0207X · Licence 3961 (CA)

Record details

NPI number1881013795
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 8, 2014
Last updated in NPPESAugust 14, 2024
Certification dateAugust 14, 2024

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