Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Margaret Muthoni Ngumi, FNP-CPMHNP-BC

Individual provider Family Nurse Practitioner · NPI 1558701458

Margaret Muthoni Ngumi, FNP-CPMHNP-BC is a Nurse Practitioner in Olympia, Washington. Qualified in 2022, 4 years ago. Practices with Floyd Physicians LLC, a 64-clinician group and accepts Medicare assignment. Licensed in Georgia and Washington.

Years since qualifying
4
Licensed in
GA, WA
In the registry since
2013
Specialties on file
3
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Practice location Address checks out

400 Union Ave SE Ste 200
Olympia, WA 98501-2060
Phone: (833) 351-8255
Fax: (770) 704-2765
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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 RN203586 (GA)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence RN203586 (GA)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence AP61321033 (WA)

Record details

NPI number1558701458
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP-CPMHNP-BC
Sole proprietorNo
NPI enumeratedJune 25, 2013
Last updated in NPPESAugust 1, 2025
Certification dateAugust 1, 2025

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 Floyd Physicians Llc — 64 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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