Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Lewis Mental Health Services

Q: What type of organization is Lewis Mental Health Services?

Lewis Mental Health Services is registered in NPPES as a Mental Health Counselor (its primary provider taxonomy).

Mental Health Counselor in Severn, MD · enumerated 2022 · authorized official Gregory Lewis, Ceo.

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

National Provider Identifier

1639880370

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Registry record

Entity type Organization (Type 2)

Legal business name Lewis Mental Health Services

Practice address 8531 O Keefe Dr, Severn, MD, 21144

Phone (443) 703-8034

Enumeration date Dec 13, 2022

Last updated in NPPES Dec 13, 2022

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Gregory Lewis

Title Ceo

Phone (443) 703-8034

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 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.

What type of organization is Lewis Mental Health Services?

Lewis Mental Health Services is registered in NPPES as a Mental Health Counselor (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-13.