Mark C. Callanan, MD
NPI 1639515984ActiveIndividual· Orthopaedic Surgery· Shreveport, LA
Orthopaedic Surgery (MD) in Shreveport, Louisiana, trained at Michigan State University College of Osteopathic Medicine (class of 2013). 331 Medicare patients in 2024, $167,136 paid; all of their 460 Part D prescriptions were generic. Arthrex, Inc. was the largest of 5 companies reporting payments in 2025, $3,616 in all, mostly travel and lodging.
Overview
| NPI | 1639515984 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 14, 2013 |
| Last updated in NPPES | Jun 21, 2021 |
| Certified by provider | Jun 21, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 320551 | LA |
| Orthopaedic Surgery | 207X00000X | L-255690 | MA |
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 (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 331 |
|---|---|
| Services billed | 4,119 across 50 procedure codes |
| Paid by Medicare | $167,136 |
Part D prescriptions in 2024
| Prescriptions (claims) | 460 · 469 30-day fills |
|---|---|
| Patients | 166 |
| Total drug cost | $3,463 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Wk Orthopedic ClinicShreveport, LA · 21 clinicians
Hospital affiliations
- Christus Shreveport-Bossier Health SystemShreveport, LA
- Willis Knighton Medical CenterShreveport, LA
Other facilities
- Centerwell Home HealthHome health agency · Coushatta, LA
- Louisiana HomecareHome health agency · Mansfield, LA
Industry payments (Open Payments)
- 2025$3,616 · 33 payments from 5 companies
- 2024$735.05 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Arthrex, Inc. | $2,399 | 22 |
| Stryker Corporation | $782.14 | 6 |
| Zimmer Biomet Holdings, Inc. | $235.73 | 2 |
| Midsouth Orthopedics Inc. | $185.81 | 2 |
| Vertex Pharmaceuticals Incorporated | $14.14 | 1 |
What the 2025 payments were for
- Travel and Lodging$2,260 · 11 payments
- Food and Beverage$1,356 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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