Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

KELSEY ANN MARTINMAAS
NPI 1932033818
Nurse Practitioner - Family in Sioux Falls, SD

Active since June 09, 2026
1305 W 18TH ST, SIOUX FALLS, SD 57105(605) 333-1000 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Kelsey Ann Martinmaas NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KELSEY ANN MARTINMAAS (NPI 1932033818) is an individual family provider in Sioux Falls, South Dakota, licensed in South Dakota (201321) and active in the NPI registry since June 2026.

NPPES Registry Identity

NPI1932033818
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameKELSEY ANN MARTINMAAS
Location Address1305 W 18TH STSioux Falls, SD 57105-0401
Mailing Address7413 W Leah StSioux Falls, SD 57106-3882 · (605) 460-1256
Sole ProprietorNo
Enumeration DateJune 9, 2026
Last NPPES UpdateJuly 23, 2026
NPPES CertifiedJuly 23, 2026
NPI 1932033818 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License Licensed in SD · 201321
1305 W 18TH ST, Sioux Falls, SD 57105

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Internal Medicine (Endocrinology, Diabetes & Metabolism)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Practitioner (Neonatal)
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Practitioner
1305 W 18TH ST
SIOUX FALLS, SD 57105
Nurse Anesthetist, Certified Registered
1305 W 18TH ST
SIOUX FALLS, SD 57105
Pathology (Anatomic Pathology & Clinical Pathology)
1305 W 18TH ST
SIOUX FALLS, SD 57105

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kelsey Martinmaas's NPI number?

The NPI number for Kelsey Martinmaas is 1932033818. It was assigned to this individual provider in the NPPES registry on June 9, 2026.

Where is Kelsey Martinmaas located?

Kelsey Martinmaas practices at 1305 W 18th St, Sioux Falls, SD 57105. The listed phone number is (605) 333-1000.

What is Kelsey Martinmaas's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

When was this NPI record last updated?

The NPPES record for Kelsey Martinmaas was last updated on July 23, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.