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Dr. Louis William Irmisch III, MD

Internal Medicine Physician in Williamsville, NY · enumerated 2006 · practices at Burnett Healthcare.

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

National Provider Identifier

1467417220

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Registry record

Entity type Individual (Type 1)
Name Dr. Louis William Irmisch III
Credential MD
Sex Male
Practice address 11 W Spring St, Williamsville, NY, 14221
Phone (716) 565-3605
Fax (716) 565-3609
Enumeration date Apr 17, 2006
Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 149546 (NY) Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 88575 (FL) Secondary
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.

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Frequently asked questions

How do I verify Louis Irmisch's NPI record?
Cross-check NPI 1467417220 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1467417220 active?
Yes, as of the latest NPPES snapshot, NPI 1467417220 is active (record last updated 2007-07-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.