Doctor profile · Federal record

Dr. Terra Grandmason, ARNP

Family Nurse Practitioner (CMS: Nurse Practitioner) · Olympia, WA

  • NPI 1235328501
  • Accepts Medicare
  • 19 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
209 Lilly RD Ne # B
Olympia, WA 985065030
(360) 413-8250
fax (360) 413-8830
Additional location
1800 Cooks Hill RD Ste G
Centralia, WA 985319162
(360) 736-3042
fax (360) 736-2967

Credentials & registration

NPPES · NUCC
NPI registered
October 2007 — 19 yrs on file
Profile last updated
January 16, 2024
Year of graduation
2007 — 19 yrs since
Specialty taxonomy
363LF0000X — NUCC code
State license (1)
Washington #AP30007907
Medicaid
WA #1054720

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1235328501. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$214
Transactions
4
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Abbvie INC. 1 $93.75
Madrigal Pharmaceuticals 1 $78.94
Janssen Biotech, INC. 1 $24.84
Neuronetics, INC. 1 $16.10

By nature of payment

Food and Beverage
$214

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
228
Patients
227
Total drug cost
$2,254
Drug Type Claims Patients Total cost
Prednisone Generic 31 31 $60
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 25 25 $220
Cephalexin Generic 23 22 $157
Fluconazole Generic 23 23 $146
Doxycycline Hyclate Generic 20 20 $166
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 17 17 $557
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 17 17 $100
Azithromycin Generic 16 16 $101
Cefdinir Generic 16 16 $259
Ciprofloxacin Hcl Generic 15 15 $86

Frequently asked questions

Auto-generated from federal data
What is Dr. Terra Grandmason's medical specialty?
Dr. Terra Grandmason practices Family Nurse Practitioner in Olympia, WA.
Where does Dr. Terra Grandmason practice?
Dr. Terra Grandmason practices at 209 Lilly RD Ne # B, Olympia, WA 985065030. Office phone: 3604138250.
What is Dr. Terra Grandmason's NPI?
Dr. Terra Grandmason's National Provider Identifier (NPI) is 1235328501, issued by NPPES.
Does Dr. Terra Grandmason accept Medicare assignment?
Yes. Dr. Terra Grandmason accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.