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

Catherine Best Slack, ARNP

Individual provider Nurse Practitioner · NPI 1932306909

Catherine Best Slack, ARNP is a Nurse Practitioner in Seattle, Washington. Qualified in 2006, 20 years ago. Practices with The Association of University Physicians, a 3,459-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
20
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

325 9th Ave
Seattle, WA 98104-2420
Phone: (206) 731-8749
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence AP30007641 (WA)

Record details

NPI number1932306909
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedJuly 2, 2007
Last updated in NPPESSeptember 20, 2007
Mailing addressPo Box 50095, Seattle, WA 98145-5095

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice The Association Of University Physicians — 3459 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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