Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Grant William Eyjolfson, MD

Family Medicine Physician in Grand Forks, ND · enumerated 2010 · practices at Altru Health System.

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

National Provider Identifier

1356655781

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Registry record

Entity type Individual (Type 1)

Name Mr. Grant William Eyjolfson

Credential MD

Sex Male

Practice address 1000 South Columbia Road, Grand Forks, ND, 58206

Phone (701) 780-5000

Fax (701) 780-6860

Enumeration date Jul 27, 2010

Last updated in NPPES Jul 11, 2019

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 56053 (MN) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License RL11611 (ND) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Is NPI 1356655781 active?

Yes, as of the latest NPPES snapshot, NPI 1356655781 is active (record last updated 2019-07-11).

How do I verify Grant Eyjolfson's NPI record?

Cross-check NPI 1356655781 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-11.