Mark M. Calder, MD/MPH
NPI 1083841746ActiveIndividual· Orthopaedic Surgery, Orthopaedic Trauma· Tulsa, OK
Orthopaedic Surgery, Orthopaedic Trauma (MD/MPH) in Tulsa, Oklahoma, trained at Tulane University School of Medicine (class of 2009). 296 Medicare patients in 2024, $141,677 paid; all of their 171 Part D prescriptions were generic. Stryker Corporation was the largest of 10 companies reporting payments in 2025, $4,198 in all, mostly food and beverage.
Overview
| NPI | 1083841746 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD/MPH |
| Sole proprietor | No |
| NPI issued | Jun 19, 2009 |
| Last updated in NPPES | Jul 9, 2024 |
| Certified by provider | Jul 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Orthopaedic Trauma Primary | 207XX0801X | 30496 | OK |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 296 |
|---|---|
| Services billed | 749 across 112 procedure codes |
| Paid by Medicare | $141,677 |
Part D prescriptions in 2024
| Prescriptions (claims) | 171 · 178 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $1,359 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Tulane University School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Orthopedic Surgery |
| Secondary specialties | Critical Care (Intensivists) |
Medical groups
- Warren Clinic IncTulsa, OK · 883 clinicians
- Care Communications LLCTulsa, OK · 33 clinicians
Hospital affiliations
- Saint Francis Hospital MuskogeeMuskogee, OK
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital Vinita, IncVinita, OK
- Saint Francis Hospital, IncTulsa, OK
Other facilities
- Elara Caring XxvHome health agency · Tulsa, OK
Industry payments (Open Payments)
- 2025$4,198 · 74 payments from 10 companies
- 2024$21,145 · 92 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $1,995 | 54 |
| Medical Device Business Services, Inc. | $1,414 | 6 |
| Depuy Synthes Sales Inc. | $400.76 | 5 |
| US Implant Solutions, LLC | $211.33 | 1 |
| Smith+nephew, Inc. | $54.03 | 3 |
What the 2025 payments were for
- Food and Beverage$2,883 · 71 payments
- Travel and Lodging$1,314 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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