Riley Sean Grogan, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

MED-PHYS-LIC-156377 Issued in MT

Practice address

500 W Broadway St FL 4BB
Missoula, MT 59802-4008

Phone

(406) 329-5828

Fax

(406) 329-5864

NPI assigned

Apr 8, 2019

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

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

Specialty

General Surgery

Education

University of Washington School of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Providence Health and Services MtGroup PAC ID 6608786306, 358 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St. Patrick Hospital Hospital, Missoula, MT, CCN 270014

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: rgrogan809951@wm.providencedirect.org

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.

• Providence Health & Services Mt

  • Rehabilitation Hospital Unit
  • Missoula, MT
  • NPI 1144319138
  Medicare reassignment Care Compare group NPD
• Providence Health & Services Mt

  • General Acute Care Hospital
  • Stevensville, MT
  • NPI 1053613356
  NPD
• Providence Health & Services Mt

  • Family Medicine Physician
  • Missoula, MT
  • NPI 1215222617
  NPD
• Providence Health & Services Mt

  • Pulmonary Disease Physician
  • Missoula, MT
  • NPI 1427096585
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Providence Health & Services Mt

  • General Acute Care Hospital
  • Missoula, MT
  • NPI 1023032588
  Care Compare affiliation
• Providence Health & Services Mt

  • Medical Oncology Physician
  • Missoula, MT
  • NPI 1326483587

  Hospital

  Care Compare affiliation
• Providence Health & Services Mt

  • Anatomic Pathology & Clinical Pathology Physician
  • Missoula, MT
  • NPI 1366185928

  Hospital

  Care Compare affiliation
• Providence Health & Services Mt

  • Psychiatric Hospital Unit
  • Missoula, MT
  • NPI 1619058302
  Care Compare affiliation

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

{
    "created_epoch": "1554681600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763251200000",
    "number": "1669935631",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 31001",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911104110",
            "telephone_number": "406-329-5828",
            "fax_number": "406-329-5864"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 W BROADWAY ST FL 4BB",
            "city": "MISSOULA",
            "state": "MT",
            "postal_code": "598024008",
            "telephone_number": "406-329-5828",
            "fax_number": "406-329-5864"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1836 South Ave",
            "address_purpose": "LOCATION",
            "city": "LA Crosse",
            "state": "WI",
            "postal_code": "546015429",
            "country_code": "US",
            "telephone_number": "608-782-7300",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "169 Ashley Ave Rm 202",
            "address_purpose": "LOCATION",
            "city": "Charleston",
            "state": "SC",
            "postal_code": "294255429",
            "country_code": "US",
            "telephone_number": "406-871-3770",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GROGAN",
        "first_name": "RILEY",
        "middle_name": "SEAN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-04-08",
        "last_updated": "2025-11-16",
        "certification_date": "2025-11-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "WI",
            "license": "74548-20",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MT",
            "license": "MED-PHYS-LIC-156377",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Huw Ifor Griffiths, P.T.
• Elizabeth J Grimley, M.D.
• Lori A Grimsley, MD
• Grizzly Sports and Family Chiropractic PLLC
• Jaclyn Grogan, LCSW
• David Joshua Grossman
• Katherine L Grote, RDN, LDN
• Ground Works Physical Therapy. PLLC
• David Scott Grove, MAT, ATC
• Julia Nicole Gruetzmacher, MD

• Surgery Physician in Missoula, MT
• Providers in Missoula, MT by specialty
• Surgery Physician in Montana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 16, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.