Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Gregory Lee Mortensen, D.C.

Chiropractor in Stanley, ND · enumerated 2007.

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

National Provider Identifier

1528183522

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Lee Mortensen

Credential D.C.

Sex Male

Practice address Stanley, ND, 58784

Phone (701) 628-7246

Enumeration date Mar 20, 2007

Last updated in NPPES Apr 29, 2014

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 722 (ND) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
12245	Medicaid	ND	-

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

What is the NPI number for Gregory Mortensen?

The National Provider Identifier (NPI) for Gregory Mortensen is 1528183522, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Mortensen practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-29.