Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Luis E Diaz Sr., COUNSELOR
Counselor in Worcester, MA · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1528463270
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mr. Luis E Diaz Sr.
Credential COUNSELOR
Sex Male
Practice address 1280 Main St, Worcester, MA, 01603
Phone (508) 754-1141
Fax (508) 754-1115
Enumeration date Oct 23, 2014
Last updated in NPPES Oct 23, 2014
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 Luis Diaz?
The National Provider Identifier (NPI) for Luis Diaz is 1528463270, a Type 1 (individual) record in the CMS NPPES registry.
Where does Luis Diaz practice?
The practice location on file with NPPES is in Worcester, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Sherri Alexandrovich Mental Health Counselor · Worcester, MA NPI 1841461415 Cristian V. Dumitriu General Practice Dentistry · Worcester, MA NPI 1093987273 Gina Gambaccini Mental Health Counselor · Worcester, MA NPI 1194146738 New Beginnings Wellness Center Inc Community/Behavioral Health Agency · Worcester, MA NPI 1700298049 Yahnique Robb Behavior Analyst · Worcester, MA NPI 1740685502 Sorie Koroma School Counselor · Worcester, MA NPI 1417352006 Stephanie Sawyer Mental Health Counselor · Worcester, MA NPI 1932596434 Brianna Dube Mental Health Counselor · Worcester, MA NPI 1043692213
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-23.