Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John D Machado, DO

Hospitalist Physician in Middletown, CT · enumerated 2006.

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

National Provider Identifier

1558324046

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Registry record

Entity type Individual (Type 1)

Name John D Machado

Credential DO

Sex Male

Practice address 28 Crescent St, Middletown, CT, 06457

Phone (860) 358-5322

Fax (860) 358-6298

Enumeration date Apr 7, 2006

Last updated in NPPES Mar 16, 2017

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 043953 (CT) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 43953 (CT) 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

Other identifiers

Identifier	Type	State	Issuer
001439539	Medicaid	CT	-

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 John Machado's NPI record?

Cross-check NPI 1558324046 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558324046 active?

Yes, as of the latest NPPES snapshot, NPI 1558324046 is active (record last updated 2017-03-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-16.