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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MATTISON GABRIELLE ALEXANDER
NPI 1558073171
Peer Specialist in Sallisaw, OK

Active since December 14, 2022
1108 N WHEELER AVE, SALLISAW, OK 74955(918) 775-5513 Get Directions Write a Review

NPPES record last updated: September 18, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 18, 2026, Dec 14, 2022 (2 updates tracked since 2022).

About Mattison Gabrielle Alexander NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MATTISON GABRIELLE ALEXANDER (NPI 1558073171) is an individual peer specialist in Sallisaw, Oklahoma and active in the NPI registry since December 2022.

NPPES Registry Identity

NPI1558073171
Entity TypeIndividualFemale
Primary Taxonomy175T00000X
Provider Legal NameMATTISON GABRIELLE ALEXANDER
Location Address1108 N WHEELER AVESallisaw, OK 74955-2227
Mailing Address1108 N Wheeler AveSallisaw, OK 74955-2227 · (918) 775-5513
Phone(918) 775-5513
Sole ProprietorNo
Enumeration DateDecember 14, 2022
Last NPPES UpdateSeptember 18, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 18, 2026
✔ NPI 1558073171 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPeer SpecialistOther Service Providers
Taxonomy Code175T00000X
Definition
Individuals certified to perform peer support services through a training process defined by a government agency, such as the Department of Veterans Affairs or a state mental health department/certification/licensing authority.
Also ListedHealth and Wellness CoachTaxonomy 171400000X
1108 N WHEELER AVE, Sallisaw, OK 74955
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EVELYN MAE PETTIGREW
Behavior Technician
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513
JACQUELINE TAYLOR RICHARDSON PADUA
Counselor (Mental Health)
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513
SKYLAR MISHAEL BISHOP
Case Manager/Care Coordinator
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513
JESSICA ANN CLOUD
Counselor
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513
TAYLOR HOWELL
Peer Specialist
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513
MRS. JENNIFER NICOLE BOYD BHRS
Counselor
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513
CYNTHIA DENISE HARRIS
Registered Nurse
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513
ANNA MARIE SHEPHERD
Case Management
1108 N WHEELER AVE
SALLISAW, OK 74955
Sequoyah County (918) 775-5513

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mattison Alexander's NPI number?

The NPI number for Mattison Alexander is 1558073171. It was assigned to this individual provider in the NPPES registry on December 14, 2022.

Where is Mattison Alexander located?

Mattison Alexander practices at 1108 N Wheeler Ave, Sallisaw, OK 74955. The listed phone number is (918) 775-5513.

What is Mattison Alexander's specialty?

The primary specialty registered for this NPI is Peer Specialist with taxonomy code 175T00000X.

When was this NPI record last updated?

The NPPES record for Mattison Alexander was last updated on September 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.