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John Merren Byrne, D.O.

Internal Medicine Physician in Aberdeen, MD · enumerated 2006.

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

National Provider Identifier

1376509075

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Registry record

Entity type Individual (Type 1)
Name John Merren Byrne
Credential D.O.
Sex Male
Practice address 995 Hospitality Way, Aberdeen, MD, 21001
Phone (410) 306-7880
Enumeration date Apr 22, 2006
Last updated in NPPES Mar 27, 2018

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License H059435 (MD) 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
P00335689 Other MD RAILROAD MEDICARE PTAN

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

Where does John Byrne practice?
The practice location on file with NPPES is in Aberdeen, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Byrne?
The National Provider Identifier (NPI) for John Byrne is 1376509075, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-27.