Mark Stanley Williams, DO
NPI 1477554624ActiveIndividual· Orthopaedic Surgery· Bloomsburg, PA
Orthopaedic Surgery (DO) in Bloomsburg, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 1992). 469 Medicare patients in 2024, $147,524 paid; nearly all of their 184 Part D prescriptions were generic (99%). Globus Medical, Inc. was the largest of 4 companies reporting payments in 2025, $318.59 in all, mostly food and beverage.
Overview
| NPI | 1477554624 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Aug 9, 2005 |
| Last updated in NPPES | Oct 16, 2026 |
| Certified by provider | Oct 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 05008141L | PA |
| Family Medicine | 207Q00000X | OS008141L | PA |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 469 |
|---|---|
| Services billed | 3,060 across 83 procedure codes |
| Paid by Medicare | $147,524 |
Part D prescriptions in 2024
| Prescriptions (claims) | 184 · 196 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $2,680 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Susquehanna Valley Medical Specialties, PCBloomsburg, PA · 5 clinicians
Hospital affiliations
- Geisinger Medical CenterDanville, PA
- Geisinger-Bloomsburg HospitalBloomsburg, PA
Other facilities
- Commonwealth Home Health & Hospice of BerwickHome health agency · Berwick, PA
Industry payments (Open Payments)
- 2025$318.59 · 7 payments from 4 companies
- 2024$325.00 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Globus Medical, Inc. | $159.00 | 4 |
| Amgen Inc. | $111.94 | 1 |
| Abbvie Inc. | $34.09 | 1 |
| Novus Surgical Consultants | $13.56 | 1 |
What the 2025 payments were for
- Food and Beverage$318.59 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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