Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Immy Yu
Pharmacist in Waltham, MA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609463371
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Registry record
Entity type Individual (Type 1)
Name Immy Yu
Sex Female
Practice address 800 Lexington St, Waltham, MA, 02452
Phone (781) 893-2070
Enumeration date Dec 28, 2020
Last updated in NPPES Dec 28, 2020
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
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 Immy Yu?
Immy Yu 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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-28.