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

Steven J O'Day, MD

Individual provider Hematology & Oncology Physician · NPI 1518070812

Steven J O'Day, MD is a Hematology & Oncology Physician in Santa Monica, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2121 Santa Monica Blvd
Santa Monica, CA 90404-2303
Phone: (310) 829-8317
Fax: (310) 315-6143
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence A53519 (CA)

Record details

NPI number1518070812
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 17, 2006
Last updated in NPPESMarch 7, 2023
Certification dateApril 19, 2021

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