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

Dawn D Theilen, ARNP

Individual provider Nurse Practitioner · NPI 1386600179

Dawn D Theilen, ARNP is a Nurse Practitioner in Mason City, Iowa. Licensed in Iowa. Registered with an NPI since 2006.

Licensed in
IA
In the registry since
2006
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

1000 4th St SW
Mason City, IA 50401-2800
Phone: (641) 428-6300
Fax: (641) 428-6374
Show map & directions

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

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence F089892 (IA)

Record details

NPI number1386600179
Entity typeIndividual (Type 1)
GenderFemale
Credentials ARNP
Sole proprietorNo
NPI enumeratedApril 21, 2006
Last updated in NPPESJuly 21, 2022
Mailing address621 S Illinois Ave Ste 103, Mason City, IA 50401-5489

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