Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Xiaoyenan Xu
Social Worker in Waltham, MA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154778504
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Registry record
Entity type Individual (Type 1)
Name Xiaoyenan Xu
Sex Female
Practice address 431 River St Ste 2, Waltham, MA, 02453
Phone (781) 966-5678
Enumeration date May 16, 2016
Last updated in NPPES Apr 4, 2024
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 is the NPI number for Xiaoyenan Xu?
The National Provider Identifier (NPI) for Xiaoyenan Xu is 1154778504, a Type 1 (individual) record in the CMS NPPES registry.
Where does Xiaoyenan Xu practice?
The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Debbie Williams Mental Health Counselor · Waltham, MA NPI 1316055338 Allison White Clinical Social Worker · Waltham, MA NPI 1598815235 Kaitlin Belowich Clinical Social Worker · Waltham, MA NPI 1134528789 Joshua Beebe Clinical Social Worker · Waltham, MA NPI 1518369842 Jasmine Weaver Counselor · Waltham, MA NPI 1538687033 Nicole Gelin Psychiatric/Mental Health Nurse Practitioner · Waltham, MA NPI 1952042889 Songi Kim Mental Health Counselor · Waltham, MA NPI 1740902105 Virna Colon Ortiz Social Worker · Waltham, MA NPI 1942074497
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-04.