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

Hollye Hahn, ARNP, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1437761988

Hollye Hahn, ARNP, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner in Oak Harbor, Washington. Practices as a sole proprietor and works from 2 locations. Licensed in Washington.

Licensed in
WA
In the registry since
2020
What do these letters mean?
ARNP — Advanced Registered Nurse Practitioner
The title some states use for an advanced practice nurse.
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

32650 State Route 20 Ste C209
Oak Harbor, WA 98277-2687
Phone: (360) 914-5744
Show map & directions

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

Additional practice locations (1)

  • 1911 E Division St, Mount Vernon, WA 98274-6703 — (360) 708-9741

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence AP61087697 (WA)

Record details

NPI number1437761988
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP , PMHNP-BC
Sole proprietorYes
NPI enumeratedAugust 17, 2020
Last updated in NPPESMarch 7, 2022
Certification dateMarch 6, 2022

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