Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Curtis M Williams, MD

Diagnostic Radiology Physician in Woonsocket, RI · enumerated 2005.

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

National Provider Identifier

1215930938

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Registry record

Entity type Individual (Type 1)

Name Curtis M Williams

Credential MD

Sex Male

Practice address 38 Hamlet Ave, Woonsocket, RI, 02895

Phone (401) 762-0020

Fax (401) 762-1819

Enumeration date May 27, 2005

Last updated in NPPES Sep 28, 2011

Taxonomy & licenses

2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License MD08357 (RI) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD08357 (RI) 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
80949	Other	MA	MA LICENSE
MD08357	Other	RI	RI LICENSE
7003945	Medicaid	RI	-
3132919	Medicaid	MA	-

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

What specialty is Curtis Williams?

Curtis Williams 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.

Other providers at this practice address

Browse all →

John Baxter Diagnostic Ultrasound Physician · Woonsocket, RI NPI 1558364273 Kathleen Staudinger Nuclear Radiology Physician · Woonsocket, RI NPI 1720081441 Anthony Potenza Diagnostic Radiology Physician · Woonsocket, RI NPI 1780687400

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-28.