Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Alexandra Castillo
Counselor in Dorchester, MA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1710379870
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Registry record
Entity type Individual (Type 1)
Name Ms. Alexandra Castillo
Sex Female
Practice address 895 Blue Hill Ave, Dorchester, MA, 02124
Phone (617) 506-8188
Enumeration date Feb 26, 2015
Last updated in NPPES Feb 26, 2015
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 Alexandra Castillo?
The National Provider Identifier (NPI) for Alexandra Castillo is 1710379870, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alexandra Castillo practice?
The practice location on file with NPPES is in Dorchester, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Asha Lewis Mental Health Counselor · Dorchester Center, MA NPI 1235358425 Terri Betts School Psychologist · Dorchester Center, MA NPI 1730392812 Academic & Behavioral Assessment Center Community/Behavioral Health Agency · Dorchester Center, MA NPI 1417160367 Carlos Castillo Clinical Child & Adolescent Psychologist · Dorchester Center, MA NPI 1427221597 Suyapa Allen Marriage & Family Therapist · Dorchester Center, MA NPI 1245488006 Help Services Network, Inc. In Home Supportive Care Agency · Dorchester Center, MA NPI 1336380971 Chernika Pierre-Jean Mental Health Counselor · Dorchester, MA NPI 1609199611 Jazmin Smith Mental Health Counselor · Dorchester, MA NPI 1720329436
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-26.