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Brian Daniel Gerrelts, MD

Surgery Physician in Waterloo, IA · enumerated 2006.

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

National Provider Identifier

1003869397

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Registry record

Entity type Individual (Type 1)
Name Brian Daniel Gerrelts
Credential MD
Sex Male
Practice address 1753 W Ridgeway Ave, Ste 107, Waterloo, IA, 50701
Phone (319) 833-5907
Fax (319) 833-5908
Enumeration date May 18, 2006
Last updated in NPPES Feb 4, 2022

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 29250 (IA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1098236 Medicaid IA -
42141730707 Other IA JOHN DEERE HEALTH INS PLA
19243 Other IA WELLMARK INS PLAN

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 1003869397 active?
Yes, as of the latest NPPES snapshot, NPI 1003869397 is active (record last updated 2022-02-04).
How do I verify Brian Gerrelts's NPI record?
Cross-check NPI 1003869397 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 2022-02-04.