Terra J. Grandmason, ARNP
NPI 1235328501ActiveIndividual· Nurse Practitioner, Family· Olympia, WA
Nurse Practitioner, Family (ARNP) with Puget Sound Gastroenterology PLLC, practicing in Olympia, Washington. In 2024 Medicare paid $67,411 for 289 patients, and Part D covered 407 of their prescriptions, 81% of them generic. Abbvie Inc. was the largest of 5 companies reporting payments in 2025, $587.49 in all, mostly food and beverage. Lists Mason General Hospital & Family of Clinics and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1235328501 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ARNP |
| Sole proprietor | No |
| NPI issued | Oct 23, 2007 |
| Last updated in NPPES | May 28, 2026 |
| Certified by provider | May 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | AP30007907 | 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 - Nurse Practitioner (AK); Practitioner - Nurse Practitioner (AZ); Practitioner - Nurse Practitioner (UT); Practitioner - Nurse Practitioner (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 289 |
|---|---|
| Services billed | 2,727 across 20 procedure codes |
| Paid by Medicare | $67,411 |
Part D prescriptions in 2024
| Prescriptions (claims) | 407 · 624 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $22,832 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Puget Sound Gastroenterology PLLCEdmonds, WA · 61 clinicians
Hospital affiliations
- Mason General Hospital & Family of ClinicsShelton, WA
- Providence Centralia HospitalCentralia, WA
- Providence St Peter HospitalOlympia, WA
- Tacoma General Allenmore HospitalTacoma, WA
Industry payments (Open Payments)
- 2025$587.49 · 9 payments from 5 companies
- 2024$213.63 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $175.93 | 2 |
| Lilly USA, LLC | $166.27 | 2 |
| Janssen Biotech, Inc. | $125.00 | 1 |
| Madrigal Pharmaceuticals | $100.57 | 2 |
| Janssen Pharmaceuticals, Inc | $19.72 | 2 |
What the 2025 payments were for
- Food and Beverage$567.77 · 7 payments
- Education$19.72 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 100 family nurse practitioners in Olympia · All family nurse practitioners in Washington