Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mattison Gabrielle Alexander
Peer Specialist in Heavener, OK · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558073171
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Registry record
Entity type Individual (Type 1)
Name Mattison Gabrielle Alexander
Sex Female
Practice address 511 E 2nd St, Heavener, OK, 74937
Phone (918) 653-7718
Enumeration date Dec 14, 2022
Last updated in NPPES May 1, 2025
Taxonomy & licenses
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.
Frequently asked questions
Where does Mattison Alexander practice?
The practice location on file with NPPES is in Heavener, OK. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mattison Alexander?
The National Provider Identifier (NPI) for Mattison Alexander is 1558073171, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Gary Youree General Practice Dentistry · Heavener, OK NPI 1205892411 Deborah Dow Mental Health Counselor · Heavener, OK NPI 1801001144 Courtney Akins Mental Health Counselor · Heavener, OK NPI 1295940609 Ramona Rust Social Worker · Heavener, OK NPI 1295921880 Mary Green Social Worker · Heavener, OK NPI 1265628853 Gary E. Youree D,D.S. PC General Practice Dentistry · Heavener, OK NPI 1457505927 Kelly Divine Mental Health Counselor · Heavener, OK NPI 1740725381 Eric J. Mead P.L.L.C. General Practice Dentistry · Heavener, OK NPI 1154894780
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-01.