Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Claudia Katherine Alvarez, LMSW
Social Worker in Staten Island, NY · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1790150415
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ms. Claudia Katherine Alvarez
Credential LMSW
Sex Female
Practice address 777 Seaview Avenue, Staten Island, NY, 10305
Phone (718) 974-0564
Enumeration date Dec 7, 2015
Last updated in NPPES Dec 7, 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
Is NPI 1790150415 active?
Yes, as of the latest NPPES snapshot, NPI 1790150415 is active (record last updated 2015-12-07).
How do I verify Claudia Alvarez's NPI record?
Cross-check NPI 1790150415 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → South Beach Addiction Treatment Center Community/Behavioral Health Agency · Staten Island, NY NPI 1922180363 Patricia Brown Social Worker · Staten Island, NY NPI 1366751125 Binu Alex, Lmsw Social Worker · Staten Island, NY NPI 1467810655 South Beach Psych Center(Omh) Home Health Agency · Staten Island, NY NPI 1306209283 Dhannya Peter Psychiatric/Mental Health Registered Nurse · Staten Island, NY NPI 1386150688 Preethi Alex Psychiatric/Mental Health Registered Nurse · Staten Island, NY NPI 1831605054
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-07.