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Nurse Practitioner

Marissia K. Schaefer, NP

Sees patients in Sioux Falls, SD · Brookings, SD · South Dakota

Summary

Marissia K. Schaefer, NP (Nurse Practitioner) is enrolled with Medicare at 2 practice locations in Sioux Falls, SD and Brookings, SD. NPI 1801551544. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(605) 697‑1900 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Marissia K. Schaefer, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

2Practice locations
Nurse PractitionerPrimary specialty
YesAccepts Medicare assignment
5Years since medical school (graduated 2021)
FemaleGender (as listed)
Sanford Medical CenterGroup practice

Quick answers

Where does Marissia K. Schaefer see patients?
Medicare's clinician data lists 2 practice locations, including Sioux Falls, SD and Brookings, SD. Call before your visit to confirm the address.
What is Marissia K. Schaefer's specialty?
Medicare lists Nurse Practitioner as the primary specialty.
Does Marissia K. Schaefer accept Medicare assignment?
Yes. Medicare's clinician data says Marissia K. Schaefer accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Marissia K. Schaefer?
(605) 697-1900, as listed in official Medicare / NPI Registry data.
What is Marissia K. Schaefer's NPI number?
1801551544. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Marissia K. Schaefer is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Marissia K. Schaefer as a member of this group (CMS data updated 2026-10-02).

  • Sanford Medical Center857 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, South Dakota →

Other nurse practitioners in Sioux Falls

Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.

All nurse practitioners in Sioux Falls →

Clinician information

CredentialNP
Graduation year2021
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1801551544
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians