Steven O'Day, M.D.
NPI 1518070812 · Hematology & Oncology Physician · Santa Monica, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven O'Day, M.D. is a Hematology & Oncology Physician provider in Santa Monica, CA (NPI 1518070812).
Provider details
- NPI number
- 1518070812
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A53519 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-17
- Last updated
- 2023-03-07
- Certified
- 2021-04-19
Frequently asked questions
- What is Steven O'Day's NPI number?
- Steven O'Day's National Provider Identifier (NPI) is 1518070812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven O'Day's specialty?
- Steven O'Day is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven O'Day located?
- Steven O'Day's practice location on file with NPPES is 2121 Santa Monica Blvd, Santa Monica, CA 90404-2303.
- What is Steven O'Day's phone number?
- The practice phone number listed in the NPPES registry for Steven O'Day is (310) 829-8317.
- Does Steven O'Day accept Medicare?
- Steven O'Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven O'Day's NPI active?
- Yes — Steven O'Day's NPI (1518070812) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.