John ByunMD
Radiation Oncology·Stanford, CA
John Byun, MD is a Radiation Oncology provider in Stanford, CA, as of July 2026.
- NPI1528487089
- Registered2014
- Class of2014
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
John Byun at a glance
- Provider
- John Byun
- Credential
- MD
- Specialty
- Radiation Oncology
- Location
- Stanford, CA
- Medical school graduation
- 2014
- NPI registered
- 2014
- NPI
- 1528487089
- 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 John Byun practice?
John Byun, MD is based in Stanford, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Byun's NPI number?
John Byun's National Provider Identifier (NPI) is 1528487089, registered in 2014. Specialty on record: Radiation Oncology; credential MD.
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, John Byun among them. The California Radiation Oncology directory lists each one by city with credential, NPI, and center affiliations.
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