Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Brian Sweeney, MD

Colon & Rectal Surgery Physician in Worcester, MA · enumerated 2006.

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

National Provider Identifier

1407894751

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. William Brian Sweeney

Credential MD

Sex Male

Practice address 55 Lake Ave N, Department of Surgery, Worcester, MA, 01655

Phone (508) 334-8195

Fax (508) 334-8130

Enumeration date Jun 2, 2006

Last updated in NPPES Jun 27, 2018

Taxonomy & licenses

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License 42274 (MN) 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
3113779	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1407894751 active?

Yes, as of the latest NPPES snapshot, NPI 1407894751 is active (record last updated 2018-06-27).

How do I verify William Sweeney's NPI record?

Cross-check NPI 1407894751 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

James Liebmann Medical Oncology Physician · Worcester, MA NPI 1477556587 Daniel Han Radiation Oncology Physician · Worcester, MA NPI 1831192301 Frances Lagana Podiatrist · Worcester, MA NPI 1750385514 Seth Arum Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1679578793 Yong Zhao Blood Banking & Transfusion Medicine Physician · Worcester, MA NPI 1366448813 Donna Russell Certified Registered Nurse Anesthetist · Worcester, MA NPI 1689672347 Bruce Simon Surgical Critical Care Physician · Worcester, MA NPI 1164420634 Richard Haas Endocrinology, Diabetes & Metabolism Physician · Worcester, MA NPI 1023017373

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-27.