Active NPI
Mari Antoinette Alexander, PHD, LPC-MHSP
- Mental Health Counselor
- Columbia, SC
National Provider Identifier
1003184987
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- 2768
- Practice address
- 2805 River Dr
Columbia, SC 29201-1605 - Phone
- (617) 777-6594
- Fax
- (617) 221-3260
- NPI assigned
- Dec 7, 2011
- Last updated
- Sep 29, 2025
- Sex
- Female
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Addiction (Substance Use Disorder) Counselor | 101YA0400X | 2768 | TN | |
| Mental Health Counselor | 101YM0800X | 2768 | TN | Primary |
Addresses
Primary practice location
2805 River Dr
Columbia, SC 29201-1605
Mailing address
2805 River Dr
Columbia, SC 29201-1605
Phone (615) 400-2504
Other names 1
- Dr. Mari Antoinette Ross
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 2768 | TN | MD | Massage Therapist |
Interoperability endpoints
- https://api.platform.athenahealth.com/4399/brand/8/csg/41/fhir/r4
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Mental Health Counselor
- Clarksville, TN
- NPI 1467880591
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1323216000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1759104000000",
"number": "1003184987",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2805 RIVER DR",
"city": "COLUMBIA",
"state": "SC",
"postal_code": "292011605",
"telephone_number": "615-400-2504",
"fax_number": "615-447-1065"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2805 RIVER DR",
"city": "COLUMBIA",
"state": "SC",
"postal_code": "292011605",
"telephone_number": "617-777-6594",
"fax_number": "617-221-3260"
}
],
"practiceLocations": [],
"basic": {
"last_name": "ALEXANDER",
"first_name": "MARI",
"middle_name": "ANTOINETTE",
"name_prefix": "Dr.",
"credential": "PHD, LPC-MHSP",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2011-12-07",
"last_updated": "2025-09-29",
"certification_date": "2025-09-29",
"status": "A"
},
"taxonomies": [
{
"code": "101YA0400X",
"taxonomy_group": "",
"desc": "Counselor, Addiction (Substance Use Disorder)",
"state": "TN",
"license": "2768",
"primary": false
},
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": "TN",
"license": "2768",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "MARI",
"last_name": "ROSS",
"middle_name": "ANTOINETTE",
"prefix": "DR.",
"credential": "PHD, LPC-MHSP",
"code": "1",
"type": "Former Name"
}
]
}Other providers in Columbia, SC
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.