Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Leidenix PC

Optometrist in Bismarck, ND · enumerated 2006 · authorized official Melissa Mattson, Manager.

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

National Provider Identifier

1669401527

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Leidenix PC

Other name <Unavail>

Practice address 2717 Rock Island Place, Suite 2, Bismarck, ND, 58504

Phone (701) 258-3402

Fax (701) 258-7897

Enumeration date Jul 2, 2006

Last updated in NPPES Oct 3, 2018

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 552 (ND) Primary

Authorized official

Name Melissa Mattson

Title Manager

Phone (701) 663-0012

Other identifiers

Identifier	Type	State	Issuer
1461613	Medicaid	ND	-
60631	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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2018-10-03. Verify at npiregistry.cms.hhs.gov.

Where is Leidenix PC located?

The practice location on file with NPPES is in Bismarck, ND.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-03.