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Cornerstone Mental Health Services

Mental Health Clinic/Center (Including Community Mental Health Center) in Byram, MS · enumerated 2016 · authorized official Teresa Hammaker, Nurse Practitioner.

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

National Provider Identifier

1609327329

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Registry record

Entity type Organization (Type 2)
Legal business name Cornerstone Mental Health Services
Practice address 2104 Crossbridge Blvd, Byram, MS, 39272
Phone (601) 487-8630
Enumeration date Oct 18, 2016
Last updated in NPPES Oct 18, 2016

Taxonomy & classification

261QM0801X Mental Health Clinic/Center (Including Community Mental Health Center) Ambulatory Health Care Facilities · License R875679 (MS) Primary

Authorized official

Name Teresa Hammaker
Title Nurse Practitioner
Phone (601) 942-1148

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-10-18. Verify at npiregistry.cms.hhs.gov.
Where is Cornerstone Mental Health Services located?
The practice location on file with NPPES is in Byram, MS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-18.