NPPES file of Aug 9, 2026

Siri Shirene Knutsen Larson, M.D.

Dermatology Physician · Rapid City, SD

Siri Shirene Knutsen Larson, M.D. is a dermatology physician with a practice address in Rapid City, South Dakota, and NPI 1659696672, issued on Apr 1, 2010. Check the license (South Dakota 9107, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1659696672
Name
Siri Shirene Knutsen Larson
Credential
M.D.
Primary taxonomy
Dermatology Physician 207N00000X
License number
9107 SD
Self-reported in NPPES; status is on the state search
Practice location
717 Meade St, Rapid City, SD 57701
Phone
(605) 341-5910
Enumerated
Apr 1, 2010
Record last updated
Jan 14, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20140604001614); accepts Medicare assignment
Medical or professional school
University Of South Carolina School Of Medicine, 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 717 Meade St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Roger Knutsen, M.D.Dermatology Physician1972573707
  2. David Rempel, DDSDentist1265460091
  3. Karen Zepp, P.A.Medical Physician Assistant1003886839

Verify Siri Shirene Knutsen Larson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
    Search for license 9107
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the South Dakota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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33% fewer Medicare Part D claims than the average dermatology physician in 2024

537 Medicare Part D claims for 233 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Siri Knutsen Larson537
  2. Specialty average797

Most prescribed

  1. Ketoconazole121 claims
  2. Triamcinolone Acetonide58 claims
  3. Hydrocortisone32 claims
  4. Clobetasol Propionate30 claims
  5. Valacyclovir29 claims
  6. Mupirocin25 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.

The MIPS final score for 2023 (Medicare payment program): 97.6 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score86.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $867.37

34 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Siri Knutsen Larson$867.37
  2. Specialty average$8,544.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Monument Health Rapid City Hospital IncRapid City, SD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Siri Shirene Knutsen Larson among 53 dermatology physician records in South Dakota

Siri Shirene Knutsen Larson, M.D. is one of 53 dermatology physician records with a practice address in South Dakota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 70% of them.

  • NPI issued2010 · 70% of these records are older, 26% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2010 · median 2007 among the 39 with a school on file
  • Record last updated2015 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in South Dakota

There are 53 dermatology physician records in South Dakota.

The 8 dermatology physician records with the nearest ZIP codes

  1. Melody Eide, MD MPHRapid City, SD 577011942419759
  2. Victoria FinleyRapid City, SD 577011457303158
  3. Maren Gaul, D.O.Rapid City, SD 577011699061085
  4. Briana HillRapid City, SD 577011306825518
  5. Kirstin HockhausenRapid City, SD 577011114451689
  6. Roger Knutsen, M.D.Rapid City, SD 577011972573707
  7. Jason Noble, MDRapid City, SD 577011487853735
  8. Tamara PolingRapid City, SD 577011053357962

Common questions

What is Siri Shirene Knutsen Larson, M.D.'s NPI number?

Siri Shirene Knutsen Larson, M.D.'s National Provider Identifier (NPI) is 1659696672, issued on Apr 1, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Siri Shirene Knutsen Larson, M.D. located?

The NPPES record lists a practice address at 717 Meade St, Rapid City, SD, 57701. Phone: (605) 341-5910. Providers update this record themselves, so call before visiting.

How can I verify Siri Shirene Knutsen Larson, M.D.'s license?

NPPES lists South Dakota license number 9107, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Siri Shirene Knutsen Larson, M.D. prescribe under Medicare Part D?

In 2024, Siri Shirene Knutsen Larson, M.D. had 537 Medicare Part D claims for 233 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is Siri Shirene Knutsen Larson, M.D.'s MIPS final score?

The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.