Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Terra J Grandmason, ARNP

Individual provider Family Nurse Practitioner · NPI 1235328501

MS. Terra J Grandmason, ARNP is a Nurse Practitioner in Olympia, Washington. Qualified in 2007, 19 years ago. Practices with Puget Sound Gastroenterology PLLC, a 59-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
19
Licensed in
WA
In the registry since
2007
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

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Practice location Address checks out

209 Lilly Rd NE # B
Olympia, WA 98506-5030
Phone: (360) 413-8250
Fax: (360) 413-8830
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 222 Kenyon St Nw Ste 1, Olympia, WA 98502-4578 — (253) 234-7027

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence AP30007907 (WA)

Record details

NPI number1235328501
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedOctober 23, 2007
Last updated in NPPESMay 28, 2026
Certification dateMay 28, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Puget Sound Gastroenterology Pllc — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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