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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian Leo Loc, D.O.

Cardiovascular Disease Physician in Dubuque, IA · enumerated 2015.

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

National Provider Identifier

1033599691

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Registry record

Entity type Individual (Type 1)
Name Brian Leo Loc
Credential D.O.
Sex Male
Practice address 1000 Langworthy St, Dubuque, IA, 52001
Phone (563) 584-3425
Fax (563) 584-3497
Enumeration date Jun 8, 2015
Last updated in NPPES Jun 27, 2022

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License DO-06021 (IA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

Is NPI 1033599691 active?
Yes, as of the latest NPPES snapshot, NPI 1033599691 is active (record last updated 2022-06-27).
How do I verify Brian Loc's NPI record?
Cross-check NPI 1033599691 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 2022-06-27.