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

Mr. Marvin Wallace Williams, ARNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1790068039

Mr. Marvin Wallace Williams, ARNP is a Psychiatric/Mental Health Nurse Practitioner in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2011.

Licensed in
WA
In the registry since
2011
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

1600 E Olive St Sound Mental Health
Seattle, WA 98122-2735
Phone: (206) 302-2200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence AP 60302470 (WA)
Adult Psychiatric/Mental Health Registered Nurse Taxonomy 163WP0809X · Licence RN60162577 (WA)

Record details

NPI number1790068039
Entity typeIndividual (Type 1)
GenderMale
Credentials ARNP
Sole proprietorNo
NPI enumeratedSeptember 22, 2011
Last updated in NPPESFebruary 9, 2017
Mailing address1600 E Olive St, Sound Mental Health, Seattle, WA 98122-2735

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