Organization Active NPI

Thalassa Therapy LLC

Doing business as Thalassa Therapy

  • Adult Mental Health Clinic/Center
  • Saint Louis, MO
National Provider Identifier
1275369688
Registry record updated Jun 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Adult Mental Health Clinic/CenterTaxonomy code 261QM0850X
Legal business name
THALASSA THERAPY LLC
Doing business as
Thalassa Therapy
Practice address
9666 Olive Blvd Ste 370
Saint Louis, MO 63132-3025
Phone
(314) 499-1060
NPI assigned
Sep 11, 2024
Last updated
Jun 11, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 11, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Mrs. Lindsay Nichols, LPCNPI 1407470644
Title
Owner
Phone
(314) 499-1060

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Professional Counselor 101YP2500X
Adult Mental Health Clinic/Center 261QM0850X Primary

Addresses

Primary practice location

9666 Olive Blvd Ste 370
Saint Louis, MO 63132-3025

Mailing address

9666 Olive Blvd Ste 370
Saint Louis, MO 63132-3025
Phone (314) 499-1060

Other identifiers 1

IdentifierTypeStateIssuer
EINMedicaidMO

Other names 2

  • Thalassa Therapy Doing business as
  • Lindsay Nichols Other name

Electronic endpoints 2

TypeEndpointUseAffiliation
CONNECT URL 9999 Direct
Direct Messaging Address lindsay@thalassatherapy.com Direct

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1726012800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1749600000000",
    "number": "1275369688",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9666 OLIVE BLVD STE 370",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631323025",
            "telephone_number": "314-499-1060"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9666 OLIVE BLVD STE 370",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631323025",
            "telephone_number": "314-499-1060"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "THALASSA THERAPY LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2024-09-11",
        "last_updated": "2025-06-11",
        "certification_date": "2025-06-11",
        "status": "A",
        "authorized_official_last_name": "NICHOLS",
        "authorized_official_first_name": "LINDSAY",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "314-499-1060",
        "authorized_official_name_prefix": "Mrs.",
        "authorized_official_credential": "LPC"
    },
    "taxonomies": [
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "261QM0850X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adult Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "EIN",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "9999",
            "affiliation": "N",
            "endpointDescription": "Never",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "expiration date",
            "address_1": "9666 Olive Blvd Ste 370",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631323025",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "lindsay@thalassatherapy.com",
            "affiliation": "N",
            "endpointDescription": "email address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "9666 Olive Blvd Ste 370",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631323025",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "organization_name": "Thalassa Therapy",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Lindsay Nichols",
            "code": "5",
            "type": "Other Name"
        },
        {
            "organization_name": "Lindsay Nichols",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Saint Louis, MO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 11, 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.

Verify at the official NPI Registry.