Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hayden Lynn Warner, MD

Urology Physician in Iowa City, IA · enumerated 2018.

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

National Provider Identifier

1497246995

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Registry record

Entity type Individual (Type 1)

Name Hayden Lynn Warner

Credential MD

Sex Male

Practice address 200 Hawkins Dr Dept of, Iowa City, IA, 52242

Phone (319) 384-5643

Fax (319) 356-3900

Enumeration date May 21, 2018

Last updated in NPPES Mar 28, 2024

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License R-11161 (IA) 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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Hayden Warner?

Hayden Warner is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-28.