NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Group Service Solution Inc

Psychologist in Raleigh, NC · enumerated 2014 · authorized official Marquise Thomas, Owner.

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

National Provider Identifier

1669881645

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Group Service Solution Inc
Practice address 4801 Glenwood Ave, Suite 200, Raleigh, NC, 27612
Phone (919) 822-2172
Fax (888) 419-2433
Enumeration date Aug 4, 2014
Last updated in NPPES Aug 11, 2014

Taxonomy & classification

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Secondary
103T00000X Psychologist Behavioral Health & Social Service Providers Primary
103TA0400X Addiction (Substance Use Disorder) Psychologist Behavioral Health & Social Service Providers Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers Secondary
103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers Secondary
103TH0004X Health Psychologist Behavioral Health & Social Service Providers Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers Secondary

Authorized official

Name Marquise Thomas
Title Owner
Phone (919) 822-2172

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Group Service Solution Inc?
NPPES lists Marquise Thomas (Owner) as the authorized official for this organization.
What is the NPI number for Group Service Solution Inc?
The NPI for Group Service Solution Inc is 1669881645, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-11.