Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alex Michael Hennessey, M.D.

Urology Physician in Danbury, CT · enumerated 2016.

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

National Provider Identifier

1811350424

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Registry record

Entity type Individual (Type 1)

Name Alex Michael Hennessey

Credential M.D.

Sex Male

Practice address 51-53 Kenosia Ave, Danbury, CT, 06810

Phone (203) 748-0330

Enumeration date Mar 31, 2016

Last updated in NPPES Sep 25, 2023

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 67394 (CT) 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.

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Frequently asked questions

How do I verify Alex Hennessey's NPI record?

Cross-check NPI 1811350424 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1811350424 active?

Yes, as of the latest NPPES snapshot, NPI 1811350424 is active (record last updated 2023-09-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-25.