Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Joseph Flanagan Jr., RPH

Pharmacist in West Roxbury, MA · enumerated 2006.

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

National Provider Identifier

1174550719

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Registry record

Entity type Individual (Type 1)

Name Mr. William Joseph Flanagan Jr.

Credential RPH

Sex Male

Practice address 1400 Vfw Pkwy, Boston Va Healthcare System Pharmacy, West Roxbury, MA, 02132

Phone (857) 203-5444

Fax (857) 203-5625

Enumeration date Jun 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 16848 (MA) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

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 William Flanagan?

William Flanagan is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Shahe Fereshetian Plastic Surgery Physician · West Roxbury, MA NPI 1447244173 Yesha Barker Emergency Medicine Physician · West Roxbury, MA NPI 1013903384 Michael Charness Neurology Physician · West Roxbury, MA NPI 1457341083 Christopher O Donnell Cardiovascular Disease Physician · Boston, MA NPI 1063402246 Paul Conlin Endocrinology, Diabetes & Metabolism Physician · West Roxbury, MA NPI 1023008257 Emily Wan Pulmonary Disease Physician · West Roxbury, MA NPI 1265423701 Albert Kim Clinical Cardiac Electrophysiology Physician · Boston, MA NPI 1184615361 John Sapirstein Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · West Roxbury, MA NPI 1235110982

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.