James RufferM.D.
Radiation Oncology·Chicago, IL
James Ruffer, M.D. is a Radiation Oncology provider in Chicago, IL, as of July 2026.
- NPI1679564629
- Registered2005
- Class of1989
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
James Ruffer at a glance
- Provider
- James Ruffer
- Credential
- M.D.
- Specialty
- Radiation Oncology
- Location
- Chicago, IL
- Medical school
- Northwestern University Feinberg Medical School
- Graduated
- 1989
- NPI registered
- 2005
- NPI
- 1679564629
- 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 Ruffer practice?
James Ruffer, M.D. is based in Chicago, IL. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is James Ruffer's NPI number?
James Ruffer's National Provider Identifier (NPI) is 1679564629, registered in 2005. Specialty on record: Radiation Oncology; credential M.D.
Where did James Ruffer go to medical school?
James Ruffer, M.D. attended Northwestern University Feinberg Medical School, graduating in 1989.
How many Radiation Oncology providers in Illinois work at ambulatory surgery centers?
49 Radiation Oncology surgeons and proceduralists in Illinois are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, James Ruffer among them. The Illinois Radiation Oncology directory lists each one by city with credential, NPI, and center affiliations.
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