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

Madelyn Koistinen

Individual provider Registered Nurse · NPI 1629894118

Madelyn Koistinen is a Registered Nurse in Watertown, South Dakota. Licensed in South Dakota. Registered with an NPI since 2024.

Licensed in
SD
In the registry since
2024

Practice location Address checks out

401 9th Ave NW
Watertown, SD 57201-1548
Phone: (605) 882-7000
Show map & directions

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

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence R054703 (SD)

Record details

NPI number1629894118
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedNovember 29, 2024
Last updated in NPPESNovember 29, 2024
Certification dateNovember 29, 2024
Mailing address46340 192nd St, Estelline, SD 57234-6025

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