Chicago Arthritis LLC
Chicago Arthritis LLC is a healthcare organization registered as Non-Pharmacy Dispensing Site in Chicago, IL, holding Type 2 (organization) NPI 1275231813 since 2023. The authorized official on file is Siddharth Tambar, Owner.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1275231813 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Chicago Arthritis LLC |
| Practice address | 618 W FULTON ST, Chicago, IL, 60661 |
| Phone | 7733487171 |
| Fax | 7733487414 |
| Enumeration date | 2023-02-22 |
| Last updated in NPPES | 2023-02-23 |
Authorized official
| Name | Siddharth Tambar |
|---|---|
| Title | Owner |
| Phone | 7733487171 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RR0500X | Rheumatology Physician | Secondary | — | — |
| 332900000X | Non-Pharmacy Dispensing Site | Primary | — | — |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| F1003344031 | Medicaid | IL | — |
Copy-ready billing details
Provider: Chicago Arthritis LLC NPI: 1275231813 Taxonomy: 332900000X (Non-Pharmacy Dispensing Site) Address: 618 W FULTON ST, Chicago, IL, 60661
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1073592861 | Mitchell Sheinkop | Individual | Orthopaedic Surgery Physician | Chicago, IL |
| 1477655488 | Siddharth Tambar | Individual | Rheumatology Physician | Chicago, IL |
| 1780814525 | Leah Brown | Individual | Physician Assistant | Chicago, IL |
| 1336400217 | Elizabeth Kiracofe | Individual | Dermatology Physician | Chicago, IL |
| 1477915221 | Chicago Arthritis LLC | Organization | Rheumatology Physician | Chicago, IL |
| 1124675244 | Kiracofe MD Medical, LLC | Organization | Dermatology Physician | Chicago, IL |
| 1619640331 | Greyledge Orthobiologic Group LLC | Organization | Orthopaedic Surgery Physician | Chicago, IL |
Verify this record
Cross-check NPI 1275231813 against the authoritative CMS record: view Chicago Arthritis LLC on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
Who is the authorized official for Chicago Arthritis LLC?
What is the NPI number for Chicago Arthritis LLC?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-02-23.