Allen ChenM.D.
Allen Chen, M.D. is a Radiation Oncology provider in Orange, CA, as of July 2026.
- NPI1518992981
- Registered2006
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Allen Chen at a glance
- Provider
- Allen Chen
- Credential
- M.D.
- Specialty
- Radiation Oncology
- Location
- Orange, CA
- NPI registered
- 2006
- NPI
- 1518992981
- 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 Allen Chen practice?
Allen Chen, M.D. is based in Orange, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Allen Chen's NPI number?
Allen Chen's National Provider Identifier (NPI) is 1518992981, registered in 2006. Specialty on record: Radiation Oncology; credential M.D.
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, Allen Chen among them. The California Radiation Oncology directory lists each one by city with credential, NPI, and center affiliations.
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