Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alexander S Young
Psychologist in Boston, MA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1164737086
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Registry record
Entity type Individual (Type 1)
Name Alexander S Young
Sex Male
Practice address 1601 Washington St, Boston, MA, 02118
Phone (617) 425-2000
Fax (617) 424-8725
Enumeration date Aug 16, 2010
Last updated in NPPES Aug 16, 2010
Taxonomy & licenses
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 Alexander Young?
Alexander Young is registered in NPPES with the primary taxonomy of Psychologist. 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.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-16.