Rex Haydon
NPI 1881759611ActiveIndividual· Orthopaedic Surgery· Chicago, IL
Orthopaedic Surgery in Chicago, Illinois, trained at University of Chicago, Pritzker School of Medicine (class of 1996). 93 Medicare patients in 2024, $21,794 paid; all of their 53 Part D prescriptions were generic. Argentum Medical was the largest of 2 companies reporting payments in 2025, $107.36 in all, mostly entertainment.
Overview
| NPI | 1881759611 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Dec 22, 2006 |
| Last updated in NPPES | Oct 24, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 036104992 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (IL); Practitioner - Orthopedic Surgery (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 93 |
|---|---|
| Services billed | 198 across 27 procedure codes |
| Paid by Medicare | $21,794 |
Part D prescriptions in 2024
| Prescriptions (claims) | 53 · 57 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $412.27 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Orthopedic Surgery |
| Telehealth | Offers telehealth |
Medical groups
- University of ChicagoChicago, IL · 1,712 clinicians
- The University of Chicago Medical CenterChicago, IL · 915 clinicians
Hospital affiliations
- The University of Chicago Medical CenterChicago, IL
- Uchicago Medicine Northwest IndianaCrown Point, IN
Industry payments (Open Payments)
- 2025$107.36 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Argentum Medical | $63.32 | 1 |
| Stryker Corporation | $44.04 | 1 |
What the 2025 payments were for
- Entertainment$63.32 · 1 payment
- Food and Beverage$44.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 328 orthopedic surgeons in Chicago · All orthopedic surgeons in Illinois