Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Arthur Edward Clark Jr., MD

Diagnostic Radiology Physician in Washington, DC · enumerated 2006.

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

National Provider Identifier

1902864341

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Registry record

Entity type Individual (Type 1)

Name Dr. Arthur Edward Clark Jr.

Credential MD

Sex Male

Practice address 900 23rd St Nw, Washington, DC, 20037

Phone (202) 715-4000

Enumeration date May 3, 2006

Last updated in NPPES Dec 18, 2025

Taxonomy & licenses

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 22120 (AZ) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD600003705 (DC) Primary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License ME120685 (FL) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License D0044324 (MD) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License ME120685 (FL) Secondary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License D0044324 (MD) Secondary

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
AZ0324990	Other	AZ	BCBS
141664	Other	AZ	AHCCCS
1Z7049	Other	AZ	HEALTHNET
012544500	Medicaid	FL	-

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 Arthur Clark?

Arthur Clark 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 2025-12-18.