Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William E Beardsley, MD
Physician Assistant in Brighton, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215917422
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Registry record
Entity type Individual (Type 1)
Name William E Beardsley
Credential MD
Sex Male
Practice address 736 Cambridge St, Brighton, MA, 02135
Phone (617) 789-3000
Enumeration date Jan 23, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 351 (MA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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.
Frequently asked questions
What specialty is William Beardsley?
William Beardsley is registered in NPPES with the primary taxonomy of Physician Assistant. 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 → Kathleen Jones Mcwilliams Advanced Practice Midwife · Brighton, MA NPI 1790783645 Max Baranovsky Geriatric Psychiatry Physician · Brighton, MA NPI 1568455939 Leslie Martin Hematology (Internal Medicine) Physician · Brighton, MA NPI 1124012299 Michael Mastromatteo Vascular & Interventional Radiology Physician · Brighton, MA NPI 1023002045 Alla Marshansky Anesthesiology Physician · Brighton, MA NPI 1760476592 Scott Epstein Critical Care Medicine (Internal Medicine) Physician · Brighton, MA NPI 1548254113 John Pastore Interventional Cardiology Physician · Brighton, MA NPI 1255325874 Mark Lovich Anesthesiology Physician · Brighton, MA NPI 1396739918
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.