Gretha Elizabeth Eifert Lewis, PA-C
NPI 1760118327ActiveIndividual· Physician Assistant· Wenatchee, WA
Physician Assistant (PA-C) with Central Washington Health Services Association, practicing in Wenatchee, Washington. Their prescriptions cost Medicare Part D more than their services did: $159,823 for 868 claims, against $26,294 paid for services in 2024. Laborie Medical Technologies Corp. was the largest of 2 companies reporting payments in 2025, $78.10 in all, mostly food and beverage. Lists Confluence Health Hospital as a hospital affiliation.
Overview
| NPI | 1760118327 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jul 26, 2022 |
| Last updated in NPPES | Aug 9, 2022 |
| Certified by provider | Aug 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA61333180 | WA |
| Physician Assistant | 363A00000X | — | — |
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 | 318 |
|---|---|
| Services billed | 633 across 27 procedure codes |
| Paid by Medicare | $26,294 |
Part D prescriptions in 2024
| Prescriptions (claims) | 868 · 1,564 30-day fills |
|---|---|
| Patients | 299 |
| Total drug cost | $159,823 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Central Washington Health Services AssociationWenatchee, WA · 721 clinicians
Hospital affiliation
- Confluence Health HospitalWenatchee, WA
Industry payments (Open Payments)
- 2025$78.10 · 3 payments from 2 companies
- 2024$42.75 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Laborie Medical Technologies Corp. | $43.04 | 2 |
| Astrazeneca Pharmaceuticals LP | $35.06 | 1 |
What the 2025 payments were for
- Food and Beverage$43.04 · 2 payments
- Education$35.06 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 70 physician assistants in Wenatchee · All physician assistants in Washington