Cristina O'DayMD
Obstetrics & Gynecology·Anaheim, CA
Cristina O'Day, MD is an Obstetrics & Gynecology provider in Anaheim, CA, as of July 2026.
- NPI1275738940
- Registered2007
- Class of2007
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Cristina O'Day at a glance
- Provider
- Cristina O'Day
- Credential
- MD
- Specialty
- Obstetrics/Gynecology
- Procedures
- Obstetrics & Gynecology CPT codes
- Location
- Anaheim, CA
- Medical school
- University of California, Irvine, California College of Medicine
- Graduated
- 2007
- NPI registered
- 2007
- NPI
- 1275738940
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Cristina O'Day practice?
Cristina O'Day, MD is based in Anaheim, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Cristina O'Day's NPI number?
Cristina O'Day's National Provider Identifier (NPI) is 1275738940, registered in 2007. Specialty on record: Obstetrics/Gynecology; credential MD.
Where did Cristina O'Day go to medical school?
Cristina O'Day, MD attended University of California, Irvine, California College of Medicine, graduating in 2007.
How many Obstetrics & Gynecology providers in California work at ambulatory surgery centers?
544 Obstetrics & Gynecology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Cristina O'Day among them. The California Obstetrics & Gynecology directory lists each one by city with credential, NPI, and center affiliations.
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