Rheumatology Associates S.c. in Chicago, IL
This organization bills under NPI 1356431365, an organization record issued on Oct 13, 2006 with the primary taxonomy Rheumatology Physician. Each clinician who works there has their own NPI and license.
Organization recordNPPES, Aug 2026
1356431365
- Legal name
- Rheumatology Associates S.c.
- Entity
- Type 2 · organization
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- Practice location
- 1725 W HARRISON ST SUITE 1039, Chicago, IL 60612
- Phone
- 312-226-8228
- Enumerated
- Oct 13, 2006
- Record updated
- Aug 22, 2020
- Authorized official
- President (title as filed)
3 clinicians CMS lists with Rheumatology Associates S C in Chicago
- Robert Katz, MDRheumatology Physician1790875797
- Alexandra Small, MDRheumatology Physician1356722292
- Ben Small, MDRheumatology Physician1043656499
Source: CMS Doctors and Clinicians group affiliations, matched by practice name and city.
Checking an organization
- Confirm the business with the Illinois secretary of state.
- Check the HHS-OIG exclusion list for the organization.
- Verify each clinician on their own record and the state license search.
Common questions
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.