Marianne Stewart Johnston, PA-C
NPI 1871724658ActiveIndividual· Physician Assistant· Renton, WA
Physician Assistant (PA-C) with Select Rehabilitation, LLC and 2 other groups, practicing in Renton, Washington. Their prescriptions cost Medicare Part D more than their services did: $146,380 for 2,839 claims, against $10,271 paid for services in 2024. Novo Nordisk Inc was the largest of 10 companies reporting payments in 2025, $480.54 in all, mostly food and beverage. Lists Valley Medical Center as a hospital affiliation.
Overview
| NPI | 1871724658 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Jul 28, 2009 |
| Last updated in NPPES | Nov 30, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA 60105502 | WA |
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 - Physician Assistant (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 164 across 8 procedure codes |
| Paid by Medicare | $10,271 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,839 · 4,546 30-day fills |
|---|---|
| Patients | 106 |
| Total drug cost | $146,380 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- Select Rehabilitation, LLCGlenview, IL · 2,046 clinicians
- Select Outpatient Services IncGlenview, IL · 805 clinicians
- Stacey L Hiles MD PLLCRenton, WA · 3 clinicians
Hospital affiliation
- Valley Medical CenterRenton, WA
Industry payments (Open Payments)
- 2025$480.54 · 21 payments from 10 companies
- 2024$617.18 · 28 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $116.77 | 6 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $89.64 | 4 |
| Abbvie Inc. | $65.22 | 3 |
| Otsuka America Pharmaceutical, Inc. | $42.43 | 2 |
| Exact Sciences Corporation | $34.60 | 1 |
What the 2025 payments were for
- Food and Beverage$480.54 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 61 physician assistants in Renton · All physician assistants in Washington