James MacerMD
Obstetrics & Gynecology·Pasadena, CA
James Macer, MD is an Obstetrics & Gynecology provider in Pasadena, CA, as of July 2026.
- NPI1134129711
- Registered2005
- Class of1979
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
James Macer at a glance
- Provider
- James Macer
- Credential
- MD
- Specialty
- Obstetrics/Gynecology
- Procedures
- Obstetrics & Gynecology CPT codes
- Location
- Pasadena, CA
- Medical school
- University of Southern California Keck School of Medicine
- Graduated
- 1979
- NPI registered
- 2005
- NPI
- 1134129711
- 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 James Macer practice?
James Macer, MD is based in Pasadena, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is James Macer's NPI number?
James Macer's National Provider Identifier (NPI) is 1134129711, registered in 2005. Specialty on record: Obstetrics/Gynecology; credential MD.
Where did James Macer go to medical school?
James Macer, MD attended University of Southern California Keck School of Medicine, graduating in 1979.
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, James Macer among them. The California Obstetrics & Gynecology directory lists each one by city with credential, NPI, and center affiliations.
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