Mark S. Williams, D.O.
NPI 1215920186ActiveIndividual· Family Medicine· Scottdale, PA
Family Medicine (D.O.) in Scottdale, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $713,383 for 10,997 claims, against $60,836 paid for services in 2024. Stryker Corporation reported $14.88 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1215920186 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Aug 25, 2005 |
| Last updated in NPPES | Feb 12, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | OS005170L | 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 - Family Practice (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 242 |
|---|---|
| Services billed | 1,083 across 18 procedure codes |
| Paid by Medicare | $60,836 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,997 · 28,067 30-day fills |
|---|---|
| Patients | 776 |
| Total drug cost | $713,383 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Family Practice |
Hospital affiliations
- Excela Health - Frick HospitalMount Pleasant, PA
- Excela Health Latrobe HospitalLatrobe, PA
- Excela Health Westmoreland Regional HospitalGreensburg, PA
- Penn Highlands ConnellsvilleConnellsville, PA
- Uniontown HospitalUniontown, PA
Other facilities
- Amedisys Home Health of PAHome health agency · Uniontown, PA
- Excela Health Home Care & HospiceHome health agency · Greensburg, PA
- Amedisys Hospice of PAHospice · Uniontown, PA
- Excela Health Home Care & HospiceHospice · Greensburg, PA
Industry payments (Open Payments)
- 2025$14.88 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $14.88 | 1 |
What the 2025 payments were for
- Food and Beverage$14.88 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Family Medicine providers in Scottdale
- 1821195538
- 1528007481
- 1962399410
- 1073514246
- 1275229106
- 1851926224
- 1073515441
- 1558468264