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

Kristina Katarina Johnstone, ARNP

Individual provider Acute Care Nurse Practitioner · NPI 1578282992

Kristina Katarina Johnstone, ARNP is a Nurse Practitioner in Coupeville, Washington. Qualified in 2022, 4 years ago. Practices with Whidbey Island Public Hospital District, a 99-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
4
Licensed in
WA
In the registry since
2022
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.

See every abbreviation used in this directory →

Practice location Address checks out

101 N Main St
Coupeville, WA 98239-3413
Phone: (360) 678-5151
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence AP61341751 (WA)

Record details

NPI number1578282992
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorYes
NPI enumeratedAugust 29, 2022
Last updated in NPPESAugust 29, 2022
Certification dateAugust 25, 2022
Mailing address1155 Se City Beach St Unit 2111, Oak Harbor, WA 98277-2990

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice Whidbey Island Public Hospital District — 99 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount