Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Rex A Outtrim, MD

Cardiovascular Disease Physician in Riverton, UT · enumerated 2005.

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

National Provider Identifier

1558355313

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Registry record

Entity type Individual (Type 1)

Name Rex A Outtrim

Credential MD

Sex Male

Practice address 3723 W 12600 S, Riverton, UT, 84065

Phone (801) 285-4590

Enumeration date Sep 8, 2005

Last updated in NPPES Jul 18, 2014

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 5006181205 (UT) Primary

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 1558355313 active?

Yes, as of the latest NPPES snapshot, NPI 1558355313 is active (record last updated 2014-07-18).

How do I verify Rex Outtrim's NPI record?

Cross-check NPI 1558355313 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 2014-07-18.