Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Mari Sullivan Walker, M.A. LICENSED PSYCHO
Psychologist in Mullens, WV · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588760771
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Registry record
Entity type Individual (Type 1)
Name Ms. Mari Sullivan Walker
Credential M.A. LICENSED PSYCHO
Sex Female
Practice address 102 Howard Ave, Mullens, WV, 25882
Phone (304) 294-5353
Fax (304) 294-8627
Enumeration date Sep 15, 2006
Last updated in NPPES Jan 11, 2013
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0005489002 | Medicaid | WV | - |
| 0005489001 | Medicaid | WV | - |
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 Mari Walker practice?
The practice location on file with NPPES is in Mullens, WV. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mari Walker?
The National Provider Identifier (NPI) for Mari Walker is 1588760771, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-11.