Nathan Colbert Showalter, PA-C
NPI 1427787746ActiveIndividual· Physician Assistant· Springfield, OR
Physician Assistant (PA-C) with G Street Integrated Health, practicing in Springfield, Oregon. Their prescriptions cost Medicare Part D more than their services did: $24,146 for 334 claims, against $2,673 paid for services in 2024. Exact Sciences Corporation was the largest of 11 companies reporting payments in 2025, $618.08 in all, mostly food and beverage.
Overview
| NPI | 1427787746 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jun 10, 2022 |
| Last updated in NPPES | May 8, 2024 |
| Certified by provider | May 8, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA218346 | OR |
| Physician Assistant | 363A00000X | 1214644 | ID |
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 (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 39 across 12 procedure codes |
| Paid by Medicare | $2,673 |
Part D prescriptions in 2024
| Prescriptions (claims) | 334 · 622 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $24,146 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- G Street Integrated HealthSpringfield, OR · 22 clinicians
Industry payments (Open Payments)
- 2025$618.08 · 28 payments from 11 companies
- 2024$474.03 · 22 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $138.03 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $110.74 | 5 |
| Abbvie Inc. | $92.09 | 4 |
| Otsuka America Pharmaceutical, Inc. | $84.64 | 5 |
| Amgen Inc. | $50.15 | 2 |
What the 2025 payments were for
- Food and Beverage$618.08 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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