Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Williams Radiology Associates

Q: What type of organization is Williams Radiology Associates?

Williams Radiology Associates is registered in NPPES as a Diagnostic Radiology Physician (its primary provider taxonomy).

Diagnostic Radiology Physician in Lancaster, NH · enumerated 2007 · authorized official Russell Williams, Radiologist.

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

National Provider Identifier

1154459196

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Registry record

Entity type Organization (Type 2)

Legal business name Williams Radiology Associates

Other name <Unavail>

Practice address 170 Middle St, Weeks Medical Center, Lancaster, NH, 03584

Phone (603) 788-4911

Fax (603) 788-5062

Enumeration date Mar 1, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 6224 (NH) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 27116 (MA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 01017837A (IN) Secondary

Authorized official

Name Russell Williams

Title Radiologist

Phone (802) 748-5415

Other identifiers

Identifier	Type	State	Issuer
0000429	Medicaid	VT	-
81300429	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 is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Williams Radiology Associates?

Williams Radiology Associates is registered in NPPES as a Diagnostic Radiology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.