Mark Samuel Johnson, PA-C MT ASCP
NPI 1568453132ActiveIndividual· Physician Assistant· Saint Charles, MO
Physician Assistant (PA-C MT ASCP) in Saint Charles, Missouri, licensed in MO, with an NPI issued in November 2005. In 2024 Medicare paid $40,215 for 235 patients, and Part D covered 543 of their prescriptions, 88% of them generic. Bayer Healthcare Pharmaceuticals Inc. was the largest of 3 companies reporting payments in 2025, $227.93 in all, mostly food and beverage.
Overview
| NPI | 1568453132 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C MT ASCP |
| Sole proprietor | No |
| NPI issued | Nov 2, 2005 |
| Last updated in NPPES | Mar 13, 2020 |
| Certified by provider | Mar 13, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 2010013488 | MO |
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 - Physician Assistant (IN); Practitioner - Physician Assistant (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 235 |
|---|---|
| Services billed | 473 across 25 procedure codes |
| Paid by Medicare | $40,215 |
Part D prescriptions in 2024
| Prescriptions (claims) | 543 · 567 30-day fills |
|---|---|
| Patients | 212 |
| Total drug cost | $32,257 |
| Generic share | 88% of claims |
Industry payments (Open Payments)
- 2025$227.93 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $122.78 | 1 |
| Sk Life Science, Inc. | $72.12 | 2 |
| Teva Pharmaceuticals USA, Inc. | $33.03 | 2 |
What the 2025 payments were for
- Food and Beverage$227.93 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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