James C. Larsen, MD
Family Medicine Physician · Sundance, WY
James C. Larsen, MD is a family medicine physician with a practice address in Sundance, Wyoming, and NPI 1760528855, issued on Jan 29, 2007. Check the license (Wyoming 4487A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- James C. Larsen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 4487A WY
Self-reported in NPPES; status is on the state search - Practice location
- 713 Oak St., Sundance, WY 82729
- Phone
- (307) 283-3501
- Enumerated
- Jan 29, 2007
- Record last updated
- Aug 9, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (307) 283-2255
- Medicare enrollment
- Enrolled (PECOS I20151103002445); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 1983
- Entity
- Type 1 · individual
Verify James C. Larsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 4487ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average family medicine physician in 2024
2,048 Medicare Part D claims for 133 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Furosemide107 claims
- Levothyroxine Sodium105 claims
- Spironolactone105 claims
- Eliquis89 claims
- Atorvastatin Calcium75 claims
- Tamsulosin Hcl72 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.
Bills Medicare through one group practice
- Crook County Medical Services DistrictSundance, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
3 family medicine physician records list a practice address in Sundance
They are 3 of the 24 NPPES records with a practice address in Sundance, and 400 family medicine physician records in Wyoming.
All 3 in Sundance → All 400 in Wyoming → Every provider in Sundance →
Other family medicine physician records in Wyoming
- Farah Abdul, MDCheyenne, WY1689136202
- Michael Adams, M.D.Evanston, WY1922005347
- Raymond Adams, M.D.Fort Washakie, WY1265577134
- Ted Akers, MDNewcastle, WY1689650897
- Lenis Alvarado-Benitez, MDCheyenne, WY1073878930
- Berit Amundson, MDJackson, WY1790009454
- Laura Anders, MDGillette, WY1437244688
- Alexis Anderson Townsend, MDCheyenne, WY1255077483
- Thomas Andrew, M.D.Gillette, WY1821199316
- Stephen Asay, MDThermopolis, WY1336637529
Common questions
What is James C. Larsen, MD's NPI number?
James C. Larsen, MD's National Provider Identifier (NPI) is 1760528855, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James C. Larsen, MD located?
The NPPES record lists a practice address at 713 Oak St., Sundance, WY, 82729. Phone: (307) 283-3501. Providers update this record themselves, so call before visiting.
How can I verify James C. Larsen, MD's license?
NPPES lists Wyoming license number 4487A, 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 James C. Larsen, MD prescribe under Medicare Part D?
In 2024, James C. Larsen, MD had 2,048 Medicare Part D claims for 133 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.