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Dennis Gates, Mental Health LLC

Prescribing (Medical) Psychologist in Largo, MD · enumerated 2017 · authorized official Tom Gates, Psychiatric Nurse Practitioner.

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

National Provider Identifier

1134656747

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Registry record

Entity type Organization (Type 2)
Legal business name Dennis Gates, Mental Health LLC
Practice address 1300 Mercantile Ln Ste 198, Largo, MD, 20774
Phone (301) 955-9812
Fax (301) 955-9813
Enumeration date May 12, 2017
Last updated in NPPES Oct 27, 2025

Taxonomy & classification

103TP0016X Prescribing (Medical) Psychologist Behavioral Health & Social Service Providers · License R207808 (MD) Primary

Authorized official

Name Tom Gates
Title Psychiatric Nurse Practitioner
Phone (301) 955-9812

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

Who is the authorized official for Dennis Gates, Mental Health LLC?
NPPES lists Tom Gates (Psychiatric Nurse Practitioner) as the authorized official for this organization.
What is the NPI number for Dennis Gates, Mental Health LLC?
The NPI for Dennis Gates, Mental Health LLC is 1134656747, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-27.