Individual provider Active NPI

Mara Elizabeth Thornberg, LPC, LCPC, NCC

  • Mental Health Counselor
  • Denver, CO
National Provider Identifier
1285395251
Registry record updated Feb 10, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Mental Health CounselorTaxonomy code 101YM0800X
License
83681 Issued in TX
Practice address
1500 N Grant St Ste R
Denver, CO 80203-1859
Phone
(512) 661-2895
Fax
(406) 258-0551
NPI assigned
Jan 3, 2022
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Feb 10, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Mental Health CounselorGroup: 193400000X SINGLE SPECIALTY GROUP 101YM0800X 83681 TX Primary

Addresses

Primary practice location

1500 N Grant St Ste R
Denver, CO 80203-1859

Mailing address

1500 N Grant St Ste R
Denver, CO 80203-1859
Phone (512) 661-2895

Other names 1

  • Marah Elizabeth Martinez Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
Other URL https://secure.simplepractice.com Health Information Exchange (HIE)

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)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Natural Springs Counseling, PLLC Mental Health CurrentSince Oct 1, 2022 Accepting new patients

Locations

1500 N Grant St
Ste R
Denver, CO 80203
Phone (319) 855-7899

1001 S Main St
Kalispell, MT 59901
Phone (406) 223-5213

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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1641168000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770681600000",
    "number": "1285395251",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1500 N GRANT ST STE R",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802031859",
            "telephone_number": "512-661-2895",
            "fax_number": "406-258-0551"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 N GRANT ST STE R",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802031859",
            "telephone_number": "512-661-2895",
            "fax_number": "406-258-0551"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THORNBERG",
        "first_name": "MARA",
        "middle_name": "ELIZABETH",
        "credential": "LPC, LCPC, NCC",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2022-01-03",
        "last_updated": "2026-02-10",
        "certification_date": "2026-02-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Counselor, Mental Health",
            "state": "TX",
            "license": "83681",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "OTHERS",
            "endpointTypeDescription": "Other URL",
            "endpoint": "https://secure.simplepractice.com",
            "affiliation": "N",
            "endpointDescription": "EHR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "EHR",
            "address_1": "1001 S Main St Ste 600",
            "city": "Kalispell",
            "state": "MT",
            "country_code": "US",
            "postal_code": "599015635",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "MARAH",
            "last_name": "MARTINEZ",
            "middle_name": "ELIZABETH",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Denver, CO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 10, 2026; 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.