Mountains and Waves Mental Health PLLC

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

Legal business name

MOUNTAINS AND WAVES MENTAL HEALTH PLLC

Practice address

125 Bank St Ste 310
Missoula, MT 59802-4413

Phone

(406) 220-6110

Fax

(406) 549-7559

NPI assigned

Aug 29, 2025

Last updated

Aug 19, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Mark McGrath, PMHNPNPI 1659870178

Title

Owner/Provider

Phone

(406) 220-6110

Specialties & licenses 1

Addresses

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.

• Mark McGrath

  • Psychiatric/Mental Health Nurse Practitioner
  • Missoula, MT
  • NPI 1659870178
  NPD Authorized official

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

{
    "created_epoch": "1756425600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787097600000",
    "number": "1871472167",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "125 BANK ST STE 310",
            "city": "MISSOULA",
            "state": "MT",
            "postal_code": "598024413",
            "telephone_number": "406-220-6110",
            "fax_number": "406-549-7559"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "125 BANK ST STE 310",
            "city": "MISSOULA",
            "state": "MT",
            "postal_code": "598024413",
            "telephone_number": "406-220-6110",
            "fax_number": "406-549-7559"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MOUNTAINS AND WAVES MENTAL HEALTH PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-08-29",
        "last_updated": "2026-08-19",
        "certification_date": "2026-08-19",
        "status": "A",
        "authorized_official_last_name": "MCGRATH",
        "authorized_official_first_name": "MARK",
        "authorized_official_title_or_position": "OWNER/PROVIDER",
        "authorized_official_telephone_number": "406-220-6110",
        "authorized_official_credential": "PMHNP"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Psychiatric/Mental Health Nurse Practitioner in Missoula, MT
• Providers in Missoula, MT by specialty
• Psychiatric/Mental Health Nurse Practitioner in Montana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 19, 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.