Shannon Lee Ruth Dieffenderfer
NPI 1861048530ActiveIndividual· Physician Assistant· Anchorage, AK
Physician Assistant in Anchorage, Alaska, trained at Philadelphia Col of Osteo Med, Sewanee (class of 2020). 226 Medicare patients in 2024, $30,087 paid; nearly all of their 207 Part D prescriptions were generic (99%). Stryker Corporation was the largest of 4 companies reporting payments in 2025, $277.80 in all, mostly food and beverage.
Overview
| NPI | 1861048530 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Aug 17, 2019 |
| Last updated in NPPES | Jun 6, 2022 |
| Certified by provider | Jun 6, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 172156 | AK |
| Physician Assistant | 363A00000X | 10117 | GA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | GA |
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 (AK); Practitioner - Physician Assistant (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 403 across 60 procedure codes |
| Paid by Medicare | $30,087 |
Part D prescriptions in 2024
| Prescriptions (claims) | 207 · 242 30-day fills |
|---|---|
| Patients | 67 |
| Total drug cost | $1,227 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | Philadelphia Col of Osteo Med, Sewanee |
|---|---|
| Graduation year | 2020 |
| Medicare specialty | Physician Assistant |
Medical group
- Tanana Valley Clinic LLCFairbanks, AK · 146 clinicians
Hospital affiliation
- Fairbanks Memorial HospitalFairbanks, AK
Industry payments (Open Payments)
- 2025$277.80 · 5 payments from 4 companies
- 2024$907.23 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $133.97 | 2 |
| Medtronic, Inc. | $63.45 | 1 |
| Orthofix Medical, Inc. | $61.98 | 1 |
| Depuy Synthes Sales Inc. | $18.40 | 1 |
What the 2025 payments were for
- Food and Beverage$277.80 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 259 physician assistants in Anchorage · All physician assistants in Alaska