Individual provider Active NPI

Alexandria Niessink, CRNA

  • Certified Registered Nurse Anesthetist
  • Sioux Falls, SD
National Provider Identifier
1750271912
Registry record updated Nov 20, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
CR001204 Issued in SD
Practice address
1305 W 18TH St
Sioux Falls, SD 57105-0401
Phone
(605) 333-1000
NPI assigned
Jul 8, 2025
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 20, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X CR001204 SD Primary

Addresses

Primary practice location

1305 W 18TH St
Sioux Falls, SD 57105-0401

Mailing address

PO Box 5074
Sioux Falls, SD 57117-5074

Other names 1

  • Alexandria Erickson Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in SD

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20251202001121 SD Practitioner - Certified Registered Nurse Anesthetist (Crna) 6305339086 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2025
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sanford Medical CenterGroup PAC ID 8325950215, 847 clinicians

Practice addresses (Care Compare)

1301 W 18TH St
Sioux Falls, SD 57105-0401
Phone (605) 312-2200

1305 W 18TH St
Sioux Falls, SD 57105-0401
Phone (605) 312-7300

4405 E 26TH St
Sioux Falls, SD 57103-4187
Phone (605) 332-2883

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
CR001204SDMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Sanford Medical Center CurrentSince Sep 22, 2025 Accepting new patients
Sanford Medical Center CurrentSince Sep 22, 2025 Accepting new patients

Locations

4405 E 26th St
Sioux Falls, SD 57103
Phone (605) 328-9000

1305 W 18th St
Sioux Falls, SD 57105
Phone (605) 312-7300

Organizations & group practices 2

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 3

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1751932800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763596800000",
    "number": "1750271912",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 5074",
            "city": "SIOUX FALLS",
            "state": "SD",
            "postal_code": "571175074"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1305 W 18TH ST",
            "city": "SIOUX FALLS",
            "state": "SD",
            "postal_code": "571050401",
            "telephone_number": "605-333-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIESSINK",
        "first_name": "ALEXANDRIA",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-07-08",
        "last_updated": "2025-11-20",
        "certification_date": "2025-11-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "SD",
            "license": "CR001204",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ALEXANDRIA",
            "last_name": "ERICKSON",
            "credential": "CRNA",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Sioux Falls, SD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.