Oncology Specialists Sc
Oncology Specialists Sc holds 6 active organization NPIs in the federal registry, with practice locations in 3 Illinois cities. 3 list non-pharmacy dispensing site as their primary taxonomy; each location can bill under its own NPI.
Search the organization with your city to find the NPI for the location you visit or bill.
Find a location's NPINiles has the most NPIs, 2
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2006 and 2007
Source: CMS NPPES, enumeration dates.
4 NPIs were issued in 2007 alone, more than in any other year.
Niles locations
The city with the most Oncology Specialists Sc NPIs. The full list of all 6 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1841326246 | 7900 N MILWAUKEE AVE, Niles | Non-Pharmacy Dispensing Site | Feb 27, 2007 |
| 1912027434 | 7900 N MILWAUKEE AVE SUITE 16, Niles | Hematology & Oncology Physician | Mar 29, 2007 |
All 6 locations, by city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1841326246 | 7900 N MILWAUKEE AVE, Niles | Non-Pharmacy Dispensing Site | Feb 27, 2007 |
| 1912027434 | 7900 N MILWAUKEE AVE SUITE 16, Niles | Hematology & Oncology Physician | Mar 29, 2007 |
| 1518993203 | 1700 LUTHER LN, Park Ridge | Non-Pharmacy Dispensing Site | Jun 24, 2006 |
| 1689794968 | 1700 LUTHER LN, Park Ridge | Hematology & Oncology Physician | Mar 30, 2007 |
| 1598710329 | 9669 KENTON AVE STE 500, Skokie | Non-Pharmacy Dispensing Site | May 23, 2006 |
| 1487774907 | 9669 KENTON AVE SUITE 500, Skokie | Hematology & Oncology Physician | Mar 29, 2007 |
Checking an organization
- Match the NPI to the exact location you will visit or bill; each location can have its own.
- Confirm the business entity with the secretary of state.
- Check the HHS-OIG exclusion list for the organization and its owners.
- Verify each clinician you will see on their own record and with the state license search.
Common questions
Why does Oncology Specialists Sc have 6 NPIs?
An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Oncology Specialists Sc's NPIs list practice locations in 3 cities.
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.