NPIMap

Individual provider Active NPI

Ragnvaldr Buck Bjornsson, MD

  • Emergency Medicine Physician
  • Rock Springs, WY
National Provider Identifier
1851379119
Registry record updated Jan 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
6690A Issued in WY
Practice address
1200 College Dr
Rock Springs, WY 82901-5868
Phone
(307) 362-3711
Fax
(307) 352-8178
NPI assigned
Jan 6, 2006
Last updated
Jan 23, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jan 23, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 6690A WY Primary
Emergency Medicine Physician 207P00000X M8716 ID

Addresses

Primary practice location

1200 College Dr
Rock Springs, WY 82901-5868

Mailing address

505 S 336TH St
Suite 600
Federal Way, WA 98003-6328
Phone (253) 838-6180

Other identifiers 4

IdentifierTypeStateIssuer
58024OtherIDBLUE CROSS OF ID
314686OtherWYBSWY
605960009OtherWYFBL
806470900MedicaidID

Other names 1

  • Stephen Wallace Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address rbjornsson805759@direct.med.utah.edu Direct University of Utah

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20050330000894 WY Practitioner - Family PracticePractitioner - Emergency Medicine 7810895877 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Stanford University School of Medicine, 1998
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University of Utah Adult ServicesGroup PAC ID 0941525273, 1,758 clinicians
Memorial Hospital of Carbon CountyGroup PAC ID 9638067176, shared by 3 NPIs, 38 clinicians

Practice addresses (Care Compare)

1200 College Dr
Rock Springs, WY 82901-5868
Phone (801) 581-3495

2221 Elm St
Rawlins, WY 82301-5108
Phone (307) 324-2221

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
33.71 of 100Reported as group
Quality
39.66
Improvement activities
0

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
M8716IDMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of Utah Adult Services Current Accepting new patients
Sublette County Hospital District Current Accepting new patients
Memorial Hospital of Carbon County CurrentSince Jul 14, 2024 Accepting new patients
Memorial Hospital of Carbon County CurrentSince Jul 14, 2024 Accepting new patients
Memorial Hospital of Carbon County Current Accepting new patients
University of Utah Adult Services CurrentSince Jul 1, 2015 Accepting new patients
Memorial Hospital of Carbon County Current Accepting new patients
University of Utah Adult Services CurrentSince Jul 1, 2015 Accepting new patients
Tacoma Emergency Medicine Associates PC Emergency Medicine Past Accepting new patients
Northwest Emergency Physicians LLC Emergency Medicine Past Accepting new patients
Northwest Physician Associates, Apc Emergency Medicine Past Accepting new patients

Locations

3100 Channing Way
Idaho Falls, ID 83404
Phone (208) 227-2100

50 N Medical Dr
Slc, UT 84132
Phone (801) 581-2292

2221 Elm St
Rawlins, WY 82301
Phone (307) 324-2221

300 3rd St
Rawlins, WY 82301
Phone (307) 324-3403

1200 College Dr
Rock Springs, WY 82901
Phone (307) 352-8352

Interoperability endpoints

  • Direct secure messaging: rbjornsson805759@direct.med.utah.edu

Organizations & group practices 11

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 2

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

NPI Registry JSON

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

{
    "created_epoch": "1136505600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769126400000",
    "number": "1851379119",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "505 S 336TH ST",
            "address_2": "SUITE 600",
            "city": "FEDERAL WAY",
            "state": "WA",
            "postal_code": "980036328",
            "telephone_number": "253-838-6180",
            "fax_number": "253-838-6418"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1200 COLLEGE DR",
            "city": "ROCK SPRINGS",
            "state": "WY",
            "postal_code": "829015868",
            "telephone_number": "307-362-3711",
            "fax_number": "307-352-8178"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BJORNSSON",
        "first_name": "RAGNVALDR",
        "middle_name": "BUCK",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-01-06",
        "last_updated": "2026-01-23",
        "certification_date": "2026-01-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WY",
            "license": "6690A",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "ID",
            "license": "M8716",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS OF ID",
            "identifier": "58024",
            "state": "ID"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BSWY",
            "identifier": "314686",
            "state": "WY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "FBL",
            "identifier": "605960009",
            "state": "WY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "806470900",
            "state": "ID"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "rbjornsson805759@direct.med.utah.edu",
            "affiliation": "Y",
            "affiliationName": "University of Utah",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "50 N Medical Dr",
            "city": "Salt Lake City",
            "state": "UT",
            "country_code": "US",
            "postal_code": "841320100",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "STEPHEN",
            "last_name": "WALLACE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Rock Springs, WY

Sources for this page

Verify at the official NPI Registry.