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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Ruth E Lewis Phd LLC

Community/Behavioral Health Agency in Arlington, MA · enumerated 2013 · authorized official Ruth Lewis, Clinical Pyschologist.

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

National Provider Identifier

1306184247

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Registry record

Entity type Organization (Type 2)
Legal business name Ruth E Lewis Phd LLC
Parent organization Ruth E. Lewis Phd LLC
Practice address 742 Massachusetts Ave, Arlington, MA, 02476
Phone (781) 483-3329
Fax (855) 893-1289
Enumeration date Jan 28, 2013
Last updated in NPPES Jan 28, 2013

Taxonomy & classification

251S00000X Community/Behavioral Health Agency Agencies · License 7359 (MA) Primary

Authorized official

Name Ruth Lewis
Title Clinical Pyschologist
Phone (781) 483-3329

Other identifiers

Identifier Type State Issuer
110022442A 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.

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Frequently asked questions

What type of organization is Ruth E Lewis Phd LLC?
Ruth E Lewis Phd LLC is registered in NPPES as a Community/Behavioral Health Agency (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-28.