Daniel Paul Mass, M.D.
NPI 1689745002ActiveIndividual· Orthopaedic Surgery, Hand Surgery· Chicago, IL
Orthopaedic Surgery, Hand Surgery (M.D.) in Chicago, Illinois, trained at University of Chicago, Pritzker School of Medicine (class of 1975). Mostly services rather than prescriptions: Medicare paid $8,870 for 29 patients in 2024, with only 22 Part D claims. Depuy Synthes Sales Inc. was the largest of 3 companies reporting payments in 2025, $95.56 in all, mostly food and beverage.
Overview
| NPI | 1689745002 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 10, 2006 |
| Last updated in NPPES | Mar 6, 2025 |
| Certified by provider | Mar 6, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Hand Surgery Primary | 207XS0106X | 036-053003 | IL |
| Orthopaedic Surgery | 207X00000X | 036053003 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 29 |
|---|---|
| Services billed | 69 across 26 procedure codes |
| Paid by Medicare | $8,870 |
Part D prescriptions in 2024
| Prescriptions (claims) | 22 · 22 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $86.36 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | Orthopedic Surgery |
| Secondary specialties | Hand Surgery |
Medical group
- The Board of Trustees of the University of IllinoisChicago, IL · 1,150 clinicians
Hospital affiliation
- University of Illinois Hospital and ClinicsChicago, IL
Industry payments (Open Payments)
- 2025$95.56 · 4 payments from 3 companies
- 2024$121.81 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Depuy Synthes Sales Inc. | $59.64 | 2 |
| Stryker Corporation | $19.73 | 1 |
| Skeletal Dynamics Inc | $16.19 | 1 |
What the 2025 payments were for
- Food and Beverage$95.56 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 Orthopaedic Surgery, Hand Surgery providers in Chicago · All Orthopaedic Surgery, Hand Surgery providers in Illinois