Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dieu Thuy Ly, D.M.D
Endodontics in N Chelmsford, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1265534358
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Registry record
Entity type Individual (Type 1)
Name Dieu Thuy Ly
Credential D.M.D
Sex Female
Practice address 73 Princeton St, Ste 202, N Chelmsford, MA, 01863
Phone (978) 251-1515
Fax (978) 251-1616
Enumeration date Sep 1, 2006
Last updated in NPPES Apr 10, 2015
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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
How do I verify Dieu Ly's NPI record?
Cross-check NPI 1265534358 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1265534358 active?
Yes, as of the latest NPPES snapshot, NPI 1265534358 is active (record last updated 2015-04-10).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-10.