Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

United Mri Network Inc.

Magnetic Resonance Imaging (MRI) Clinic/Center in San Deigo, CA · enumerated 2010 · authorized official Mark Mathiesen, President.

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

National Provider Identifier

1336470632

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Registry record

Entity type Organization (Type 2)

Legal business name United Mri Network Inc.

Practice address 3444 Kearny Villa Dr, Suite 405, San Deigo, CA, 92123

Phone (800) 681-7304

Enumeration date Jan 26, 2010

Last updated in NPPES Jan 26, 2010

Taxonomy & classification

261QM1200X Magnetic Resonance Imaging (MRI) Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Mark Mathiesen

Title President

Phone (800) 681-7304

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 is United Mri Network Inc. located?

The practice location on file with NPPES is in San Deigo, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-01-26. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-26.