Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexander Christensen, MSW, LMSW

Social Worker in Sioux Falls, SD · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1487197273

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Alexander Christensen

Credential MSW, LMSW

Sex Male

Practice address 2500 W 22nd St, Sioux Falls, SD, 57105

Phone (605) 336-3230

Enumeration date Nov 28, 2016

Last updated in NPPES Mar 14, 2025

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 099881 (IA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Alexander Christensen practice?

The practice location on file with NPPES is in Sioux Falls, SD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alexander Christensen?

The National Provider Identifier (NPI) for Alexander Christensen is 1487197273, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-14.