Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert M O'Reilly, D.O.

Internal Medicine Physician in Farmington, ME · enumerated 2006 · practices at Mainehealth.

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

National Provider Identifier

1497780605

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert M O'Reilly

Credential D.O.

Sex Male

Practice address 131 Franklin Health Cmns, Suite F, Farmington, ME, 04938

Phone (207) 778-4922

Fax (207) 779-0646

Enumeration date Jul 12, 2006

Last updated in NPPES Jan 19, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0747 (ME) 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

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Robert O'Reilly?

Robert O'Reilly is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-19.