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

Maxwell M Zamzow, ARNP

Individual provider Nurse Practitioner · NPI 1326618281

Maxwell M Zamzow, ARNP is a Nurse Practitioner in Marysville, Washington. Qualified in 2021, 5 years ago. Practices with Optum Care Washington PLLC, a 685-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
5
Licensed in
WA
In the registry since
2021
Specialties on file
2
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

2901 174th St NE
Marysville, WA 98271-4743
Phone: (360) 454-1900
Fax: (360) 454-1991
Show map & directions

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

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence AP61183580 (WA)
Nurse Practitioner Taxonomy 363L00000X · Licence RN60426586 (WA)

Record details

NPI number1326618281
Entity typeIndividual (Type 1)
GenderMale
Credentials ARNP
Sole proprietorYes
NPI enumeratedJuly 1, 2021
Last updated in NPPESJune 8, 2026
Certification dateJune 8, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Optum Care Washington Pllc — 685 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Marysville