Ragnvaldr Buck Bjornsson, MD
Emergency Medicine Physician · Rock Springs, WY
Ragnvaldr Buck Bjornsson, MD is an emergency medicine physician with a practice address in Rock Springs, Wyoming, and NPI 1851379119, issued on Jan 6, 2006. Check the license (Wyoming 6690A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Ragnvaldr Buck Bjornsson
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 6690A WY
M8716 ID
Self-reported in NPPES; status is on the state search - Practice location
- 1200 College Dr, Rock Springs, WY 82901
- Phone
- (307) 362-3711
- Enumerated
- Jan 6, 2006
- Record last updated
- Jan 23, 2026
- Fax
- (307) 352-8178
- Medicaid ID
- 806470900 ID
- Medicare enrollment
- Enrolled (PECOS I20050330000894); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 111 in Wyoming → Look up another NPI →
Also registered at 1200 College Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Neal Asper, D.O.Anesthesiology Physician1710115753
- Ahmad Bashirimoghaddam, DOInternal Medicine Physician1487144457
- Benjamin Beasley, M.D.Emergency Medicine Physician1952450280
- Edmund Boese, MDAnesthesiology Physician1063433761
- Nicole Burke, RNRegistered Nurse1306668223
- Howard Burns, M.D.Emergency Medicine Physician1477591295
Verify Ragnvaldr Buck Bjornsson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 6690ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average emergency medicine physician in 2024
19 Medicare Part D claims for 17 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
2 hospitals and group practices
- Memorial Hospital OF Carbon CountyRawlins, WY · Critical Access Hospitals
- University OF Utah Adult ServicesRock Springs, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Ragnvaldr Buck Bjornsson among 111 emergency medicine physician records in Wyoming
Ragnvaldr Buck Bjornsson, MD is one of 111 emergency medicine physician records with a practice address in Wyoming. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 60% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1998 · median 2009 among the 75 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 emergency medicine physician records list a practice address in Rock Springs
They are 10 of the 620 NPPES records with a practice address in Rock Springs, and 111 emergency medicine physician records in Wyoming.
All 111 in Wyoming → Every provider in Rock Springs → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Benjamin Beasley, M.D.Rock Springs, WY 829011952450280
- Howard Burns, M.D.Rock Springs, WY 829011477591295
- Kathryn Collins, M.D.Rock Springs, WY 829011619916897
- Faith Dillard, MDRock Springs, WY 829011881684512
- Frederick Johnson, MDRock Springs, WY 829011891780029
- Ronald McKee, MDRock Springs, WY 829011427097658
- Jonathan Roddy, MDRock Springs, WY 829011033271366
- John Sherman, MDRock Springs, WY 829011730185497
Common questions
What is Ragnvaldr Buck Bjornsson, MD's NPI number?
Ragnvaldr Buck Bjornsson, MD's National Provider Identifier (NPI) is 1851379119, issued on Jan 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ragnvaldr Buck Bjornsson, MD located?
The NPPES record lists a practice address at 1200 College Dr, Rock Springs, WY, 82901. Phone: (307) 362-3711. Providers update this record themselves, so call before visiting.
How can I verify Ragnvaldr Buck Bjornsson, MD's license?
NPPES lists Wyoming license number 6690A, as entered by the provider. Search the Wyoming Board of Medicine at https://wyomedboard.wyo.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ragnvaldr Buck Bjornsson, MD prescribe under Medicare Part D?
In 2024, Ragnvaldr Buck Bjornsson, MD had 19 Medicare Part D claims for 17 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.