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

Margaret Duffy, ARNP

Individual provider Nurse Practitioner · NPI 1841293503

Margaret Duffy, ARNP is a Nurse Practitioner in Marshalltown, Iowa. Licensed in Iowa. Registered with an NPI since 2005.

Licensed in
IA
In the registry since
2005
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

407 E Main St
Marshalltown, IA 50158-1928
Phone: (641) 752-4681
Fax: (641) 752-6572
Show map & directions

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

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence #F-054726 (IA)

Record details

NPI number1841293503
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedMay 24, 2005
Last updated in NPPESJuly 13, 2026
Mailing address407 E Main St, Marshalltown, IA 50158-1928

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