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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cornelius J. Mcginn, M.D.

Radiation Oncology Physician in Portland, ME · enumerated 2006.

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

National Provider Identifier

1285642082

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Registry record

Entity type Individual (Type 1)
Name Cornelius J. Mcginn
Credential M.D.
Sex Male
Practice address 22 Bramhall St, Portland, ME, 04102
Enumeration date Aug 4, 2006
Last updated in NPPES Nov 18, 2015

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License MD16211 (ME) 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 Cornelius Mcginn's NPI record?
Cross-check NPI 1285642082 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1285642082 active?
Yes, as of the latest NPPES snapshot, NPI 1285642082 is active (record last updated 2015-11-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-11-18.