Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Alex Gerrish, LICSW

Clinical Social Worker in Jamaica Plain, MA · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1043752728

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Registry record

Entity type Individual (Type 1)

Name Alex Gerrish

Credential LICSW

Sex X

Practice address Jamaica Plain, MA, 02130

Phone (781) 561-0205

Enumeration date Nov 10, 2016

Last updated in NPPES Dec 11, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 221989 (MA) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 121740 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
110149004A	Medicaid	MA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Alex Gerrish?

Alex Gerrish is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-11.