Leon William Nowierski, M.D.
Dermatology Physician · Boise, ID
Leon William Nowierski, M.D. is a dermatology physician with a practice address in Boise, Idaho, and NPI 1376610048, issued on Nov 29, 2006. Check the license (Idaho M4341, as entered in NPPES) on the Idaho Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Leon William Nowierski
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- M4341 ID
Self-reported in NPPES; status is on the state search - Practice location
- 100 Warm Springs Ave, Boise, ID 83712
- Phone
- (208) 343-5910
- Enumerated
- Nov 29, 2006
- Record last updated
- Aug 26, 2022
- Fax
- (208) 384-8562
- Medicaid ID
- 002586300 ID
- Medicare enrollment
- Enrolled (PECOS I20100909000370); may accept Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 1975
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 59 in Idaho → Look up another NPI →
Also registered at 100 Warm Springs Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Renee Bourquard, MDSurgery Physician1790737591
- J. Chris Kantarian, MDColon & Rectal Surgery Physician1699774042
- Benjamin Karsten, MDSurgery Physician1124227137
Verify Leon William Nowierski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license M4341Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average dermatology physician in 2024
511 Medicare Part D claims for 217 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Doxycycline Hyclate149 claims
- Mupirocin89 claims
- Triamcinolone Acetonide67 claims
- Clobetasol Propionate44 claims
- Valacyclovir24 claims
- Desonide16 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): 0 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.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- L William D Nowierski MD PABoise, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leon William Nowierski among 59 dermatology physician records in Idaho
Leon William Nowierski, M.D. is one of 59 dermatology physician records with a practice address in Idaho. 83% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 49% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated1975 · median 2008 among the 47 with a school on file
- Record last updated2022 · 53% 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 Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Idaho
There are 59 dermatology physician records in Idaho.
All 59 in Idaho → Every provider in Boise → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Jennifer Deblieck, MDBoise, ID 837131861421240
- Jhon Hall, MDBoise, ID 837131225107386
- Keelie NowBoise, ID 837131407704356
- Dustin Portela, D.O.Boise, ID 837131588002547
- Matthew Bender, MDGarden City, ID 837141881633162
- Joseph Fetzek, M.D.Boise, ID 837091154475556
- Marnie Ririe, MDBoise, ID 837091134170855
- Steven Mings, MDBoise, ID 837061548214265
Common questions
What is Leon William Nowierski, M.D.'s NPI number?
Leon William Nowierski, M.D.'s National Provider Identifier (NPI) is 1376610048, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leon William Nowierski, M.D. located?
The NPPES record lists a practice address at 100 Warm Springs Ave, Boise, ID, 83712. Phone: (208) 343-5910. Providers update this record themselves, so call before visiting.
How can I verify Leon William Nowierski, M.D.'s license?
NPPES lists Idaho license number M4341, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leon William Nowierski, M.D. prescribe under Medicare Part D?
In 2024, Leon William Nowierski, M.D. had 511 Medicare Part D claims for 217 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Leon William Nowierski, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 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.