Cortney Duffy

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

License

89678 Issued in MT

Practice address

1001 W Oak St
Bozeman, MT 59715-8762

Phone

(406) 599-2492

NPI assigned

Nov 10, 2020

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Practice roles

Locations

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.

• Northway Academy, Inc.

  • Community/Behavioral Health Agency
  • Elk River, MN
  • NPI 1114539434
  NPD
• Northway Academy, Inc.

  • Developmental Disabilities Clinic/Center
  • Saint Cloud, MN
  • NPI 1104333715
  NPD (past)
• Northway Academy, Inc.

  • Community/Behavioral Health Agency
  • Sartell, MN
  • NPI 1841852639
  NPD (past)

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

{
    "created_epoch": "1604966400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787011200000",
    "number": "1255933719",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1001 W OAK ST",
            "city": "BOZEMAN",
            "state": "MT",
            "postal_code": "597158762",
            "telephone_number": "406-599-2492"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1001 W OAK ST",
            "city": "BOZEMAN",
            "state": "MT",
            "postal_code": "597158762",
            "telephone_number": "406-599-2492"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2000 Fairway Dr Ste 106",
            "address_purpose": "LOCATION",
            "city": "Bozeman",
            "state": "MT",
            "postal_code": "597155871",
            "country_code": "US",
            "telephone_number": "406-599-2492",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DUFFY",
        "first_name": "CORTNEY",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2020-11-10",
        "last_updated": "2026-08-18",
        "certification_date": "2026-08-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "MT",
            "license": "89678",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Annemarie Dubios, LICSW
• Stephanie A. Dubravac, MD
• Maria Julie Dudas, PT
• Teresa A Dudzinski, PA-C
• Isaiah Michael Duff, LMT
• Laura Mayonne Dumka
• Rachael Lynn Dunkel, M.S., LCPC, LAC
• Kiley Dunlap, PSY.D.
• Marissa Louise Dunn, RBT
• Julia Dunnavant, OD

• Mental Health Counselor in Bozeman, MT
• Providers in Bozeman, MT by specialty
• Mental Health Counselor in Montana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 18, 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.