Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Miriam Zisook, LCSW
Social Worker in Somerville, MA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1326652892
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Registry record
Entity type Individual (Type 1)
Name Miriam Zisook
Credential LCSW
Sex Female
Practice address 255 Elm St Ste 201, Somerville, MA, 02144
Phone (617) 702-9131
Enumeration date Sep 2, 2020
Last updated in NPPES Sep 2, 2020
Taxonomy & licenses
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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 Miriam Zisook's NPI record?
Cross-check NPI 1326652892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1326652892 active?
Yes, as of the latest NPPES snapshot, NPI 1326652892 is active (record last updated 2020-09-02).
Other providers at this practice address
Browse all → Victoria Brandt Mental Health Counselor · Somerville, MA NPI 1588818660 Cailin Mateleska Counselor · Somerville, MA NPI 1952875312 Leonie Cohen Clinical Social Worker · Somerville, MA NPI 1275100307 Marina Kapes Mental Health Counselor · Somerville, MA NPI 1306569819 Anne Barrett Mental Health Counselor · Somerville, MA NPI 1366264673 Juliet Grisdela Mental Health Counselor · Somerville, MA NPI 1841164050
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-02.