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

Individual provider Acute Care Nurse Practitioner · NPI 1164752655

Margaret Fay Siegfried, ARNP is a Nurse Practitioner in Seattle, Washington. Qualified in 2009, 17 years ago. Practices with The Association of University Physicians, a 3,459-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
17
Licensed in
WA
In the registry since
2010
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

1101 Madison St Ste 200
Seattle, WA 98104-1306
Phone: (206) 386-3660
Fax: (206) 386-3644
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence AP60106317 (WA)

Record details

NPI number1164752655
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedJanuary 5, 2010
Last updated in NPPESJanuary 5, 2010

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice The Association Of University Physicians — 3459 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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