Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Radiation Oncology of Northern Illinois LLC

Organization Radiation Oncology Physician · NPI 1598938755

Radiation Oncology of Northern Illinois LLC provides Radiation Oncology Physician services in Ottawa, Illinois. Registered with an NPI since 2008.

In the registry since
2008
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1200 Starfire Dr
Ottawa, IL 61350 Not confirmed with CMS for 18 years — call before visiting
Phone: (815) 431-5458
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X

Record details

NPI number1598938755
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Robert Chaffin — Member · (815) 433-3100
NPI enumeratedApril 9, 2008
Last updated in NPPESApril 9, 2008
Mailing address1200 Starfire Dr, Ottawa, IL 61350

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