Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew David Ethier, MD

Diagnostic Radiology Physician in Warwick, RI · enumerated 2007 · practices at Rhode Island Medical Imaging Inc.

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

National Provider Identifier

1821290644

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Registry record

Entity type Individual (Type 1)

Name Matthew David Ethier

Credential MD

Sex Male

Practice address 125 Metro Center Blvd Ste 2000, Warwick, RI, 02886

Phone (401) 432-2520

Fax (401) 453-8220

Enumeration date Jun 4, 2007

Last updated in NPPES Mar 12, 2019

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License LP01168 (RI) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 254498 (MA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD14120 (RI) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Matthew Ethier?

Matthew Ethier is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-12.