Individual provider Active NPI

Shari K Marx, MD

  • Internal Medicine Physician
  • Helena, MT
National Provider Identifier
1659363786
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
8650 Issued in MT
Practice address
3330 Ptarmigan LN
Helena, MT 59602-0521
Phone
(406) 442-3570
Fax
(406) 795-7910
NPI assigned
Aug 16, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 8650 MT Primary

Addresses

Primary practice location

3330 Ptarmigan LN
Helena, MT 59602-0521

Mailing address

1400 29TH St S
Great Falls, MT 59405-5353
Phone (406) 454-2171

Other identifiers 1

IdentifierTypeStateIssuer
0037740MedicaidMT

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MT
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20151005001469 MT Order and Referring Only - Internal MedicinePractitioner - Internal Medicine 1254359060

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
8650MTMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Great Falls Clinic LLC Current Accepting new patients

Locations

1400 29th St S
Great Falls, MT 59405
Phone (406) 442-3570

3330 Ptarmigan Ln
Helena, MT 59602
Phone (406) 442-3570

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/25095/brand/1/csg/1/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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1124150400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1659363786",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1400 29TH ST S",
            "city": "GREAT FALLS",
            "state": "MT",
            "postal_code": "594055353",
            "telephone_number": "406-454-2171",
            "fax_number": "406-771-3021"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3330 PTARMIGAN LN",
            "city": "HELENA",
            "state": "MT",
            "postal_code": "596020521",
            "telephone_number": "406-442-3570",
            "fax_number": "406-795-7910"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARX",
        "first_name": "SHARI",
        "middle_name": "K",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-08-16",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MT",
            "license": "8650",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0037740",
            "state": "MT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Helena, MT

Sources for this page

Verify at the official NPI Registry.