Ari J. Kaz, MD
NPI 1013940782ActiveIndividual· Orthopaedic Surgery· Chicago, IL
Orthopaedic Surgery (MD) with Illinois Bone and Joint Institute, LLC, practicing in Chicago, Illinois. Mostly services rather than prescriptions: Medicare paid $66,937 for 226 patients in 2024, with only 16 Part D claims. Smith+nephew, Inc. was the largest of 2 companies reporting payments in 2025, $5,027 in all, mostly consulting fees. Lists Advocate Illinois Masonic Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1013940782 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 8, 2006 |
| Last updated in NPPES | Nov 11, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 50626-20 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 964 across 68 procedure codes |
| Paid by Medicare | $66,937 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16 · 18 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $128.44 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Orthopedic Surgery |
Medical group
- Illinois Bone and Joint Institute, LLCGurnee, IL · 604 clinicians
Hospital affiliations
- Advocate Illinois Masonic Medical CenterChicago, IL
- Presence Saint Joseph Hospital - ChicagoChicago, IL
Industry payments (Open Payments)
- 2025$5,027 · 3 payments from 2 companies
- 2024$17,631 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Smith+nephew, Inc. | $4,590 | 2 |
| Depuy Synthes Sales Inc. | $436.53 | 1 |
What the 2025 payments were for
- Consulting Fee$4,550 · 1 payment
- Food and Beverage$476.55 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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