Iain MacewanM.D.
Radiation Oncology·San Diego, CA
Iain Macewan, M.D. is a Radiation Oncology provider in San Diego, CA, as of July 2026.
- NPI1326300401
- Registered2012
- Class of2012
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Iain Macewan at a glance
- Provider
- Iain Macewan
- Credential
- M.D.
- Specialty
- Radiation Oncology
- Location
- San Diego, CA
- Medical school
- University of California, San Diego School of Medicine
- Graduated
- 2012
- NPI registered
- 2012
- NPI
- 1326300401
- 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 Iain Macewan practice?
Iain Macewan, M.D. is based in San Diego, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Iain Macewan's NPI number?
Iain Macewan's National Provider Identifier (NPI) is 1326300401, registered in 2012. Specialty on record: Radiation Oncology; credential M.D.
Where did Iain Macewan go to medical school?
Iain Macewan, M.D. attended University of California, San Diego School of Medicine, graduating in 2012.
How many Radiation Oncology providers in California work at ambulatory surgery centers?
88 Radiation Oncology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Iain Macewan among them. The California Radiation Oncology directory lists each one by city with credential, NPI, and center affiliations.
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