Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ellen D Johnson, MD

Diagnostic Radiology Physician in Boxford, MA · enumerated 2006.

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

National Provider Identifier

1952320350

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Registry record

Entity type Individual (Type 1)

Name Ellen D Johnson

Credential MD

Sex Female

Practice address 23 Ingalls Village Way, Boxford, MA, 01921

Phone (208) 416-2932

Enumeration date Jul 18, 2006

Last updated in NPPES Dec 5, 2023

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 11090 (NH) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 0101276011 (VA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 247042 (MA) 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
7768225	Other	-	AETNA
P00183990	Other	-	RAILROAD MEDICARE
1204510	Other	-	CIGNA
2081211	Medicaid	MA	-
286860099	Medicaid	ME	-
01Y003105NH02	Other	NH	ANTHEM
30201338	Medicaid	NH	-

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 Ellen Johnson?

Ellen Johnson 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-05.