Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Letterio Monteferrante, M.D.

Diagnostic Radiology Physician in Washington, DC · enumerated 2005.

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

National Provider Identifier

1780665851

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Registry record

Entity type Individual (Type 1)

Name Mark Letterio Monteferrante

Credential M.D.

Sex Male

Practice address 3301 New Mexico Ave Nw, Suite 106, Washington, DC, 20016

Phone (202) 966-0606

Fax (202) 244-6757

Enumeration date Nov 7, 2005

Last updated in NPPES Jun 21, 2021

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License D0044877 (MD) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 185036 (NY) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD20122 (DC) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
470001526	Other	-	RR MEDICARE
300135377	Other	-	RR MEDICARE
161631501	Medicaid	MD	-

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

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 Mark Monteferrante?

Mark Monteferrante 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-21.