2026 NPPES data MOHS-Micrographic Surgery Physician NPI 1376610048 M.D.
Verify on CMS →

LEON NOWIERSKI, M.D.

MOHS-Micrographic Surgery Physician in BOISE, Idaho. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
475
Medicare Part D claims · 186 beneficiaries · MOHS-Micrographic Surgery Physician avg: 607
MIPS score
0/100
▼ 83 pts below national avg 83.1 · [object Object]

What the federal data shows

LEON NOWIERSKI, M.D. reported a CMS MIPS final score of 0/100 — below the 83.1 national average — and filed 475 Medicare Part D claims in 2023.

0/100
MIPS score · -83 vs avg
475
Part D claims, 2023
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

LEON NOWIERSKI, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

0 0th percentile higher than 0% of 477,587 scored providers

0–10: 8,684 scored providers (2%). This entry sits in this band. 10–20: 3,008 scored providers (1%). Above this entry. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

LEON NOWIERSKI, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about LEON NOWIERSKI, M.D.?

Below national average

NPI registry status

Active

Issued 11/29/2006

NPI 1376610048

Primary specialty

MOHS-Micrographic Surgery Physician

Niche

1,102 US NPIs in this specialty

Medicare Part D claims

475 22% vs specialty avg

2023 prescription claims

Specialty avg: 607

MIPS final score

0/100 83.1% pts

Penalty band band

vs 83.1 national avg

Specialty distribution in Idaho

How MOHS-Micrographic Surgery Physician compares to other specialties among Idaho providers

Idaho providers

MOHS-Micrographic Surgery Physician share within Idaho

1. MOHS-Micrographic Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
MOHS-Micrographic Surgery Physician share within Idaho

Medicare quality performance — MIPS

LEON NOWIERSKI, M.D.'s 2023 MIPS final score plotted against the MOHS-Micrographic Surgery Physician national average

Below national average
MIPS Final Score
0/100
vs 83.1 national avg · 2023 performance year

MIPS final score (MOHS-Micrographic Surgery Physician) — 0/100 vs national avg 83.1

0%100%National avg83%0%
MIPS final score (MOHS-Micrographic Surgery Physician) — 0/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

LEON NOWIERSKI, M.D. appears in the CMS NPPES registry as a MOHS-Micrographic Surgery Physician provider holding M.D. credentials at 100 WARM SPRINGS AVE, BOISE, ID, 83712, with a listed phone of (208) 343-5910. NPI 1376610048 was issued on 11/29/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NOWIERSKI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 475 prescription claims written by this provider, covering 186 Medicare beneficiaries and totaling roughly $20K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.

MOHS-Micrographic Surgery Physician is a narrow specialty nationwide, with 1,102 enrolled providers across 52 states and an average of 607 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

100 WARM SPRINGS AVE
BOISE, ID 83712

Provider Details

NPI 1376610048
Specialty MOHS-Micrographic Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 11/29/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

0
Final Score
Avg: 83.1
0
Quality

Reporting: Individual

Hospital and facility affiliations

Facilities where LEON NOWIERSKI, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

L WILLIAM D NOWIERSKI MD PA
BOISE, ID

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

475
Total Claims
$20K
Total Drug Cost
186
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
509
Total Day Supply
10,909
Generic Drug Cost
$16K
Antibiotic Claims
121

Patient Demographics

Average Patient Age
76.5 years
Avg HCC Risk Score
0.95
Gender Split
45% female / 55% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What LEON NOWIERSKI, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Mupirocin
111
Doxycycline Hyclate
97
Triamcinolone Acetonide
73
Clobetasol Propionate
42
Valacyclovir
Valacyclovir Hcl
24
Doxycycline Monohydrate
13
Finasteride
12
Metronidazole
12
Imiquimod
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

MOHS-Micrographic Surgery Physician Overview

How LEON NOWIERSKI, M.D. fits within the MOHS-Micrographic Surgery Physician landscape nationally.

1,102
MOHS-Micrographic Surgery Physician Providers in US
52
States with MOHS-Micrographic Surgery Physician
607
Avg Claims per Provider

LEON NOWIERSKI, M.D.'s 475 claims are below the specialty average of 607.

Nearby MOHS-Micrographic Surgery Physician Providers in Idaho

Other clinicians with the same primary specialty enrolled in Idaho, drawn from the same CMS NPPES roster as NOWIERSKI.

Compare MOHS-Micrographic Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LEON NOWIERSKI, M.D.'s specialty?
LEON NOWIERSKI, M.D. specializes in MOHS-Micrographic Surgery Physician and practices in BOISE, Idaho. Credentials: M.D..
How much does LEON NOWIERSKI, M.D. prescribe under Medicare Part D?
In 2023, LEON NOWIERSKI, M.D. wrote 475 Medicare Part D claims totaling $20K in drug costs for 186 beneficiaries.
What is LEON NOWIERSKI, M.D.'s Medicare quality score?
LEON NOWIERSKI, M.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is LEON NOWIERSKI, M.D. located?
LEON NOWIERSKI, M.D. is located at 100 WARM SPRINGS AVE, BOISE, ID, 83712. Phone: (208) 343-5910.
What is LEON NOWIERSKI, M.D.'s NPI number?
LEON NOWIERSKI, M.D.'s National Provider Identifier (NPI) is 1376610048, issued on 11/29/2006.
How many MOHS-Micrographic Surgery Physician providers are there in the US?
There are 1,102 MOHS-Micrographic Surgery Physician providers across 52 states in the US. The average MOHS-Micrographic Surgery Physician provider writes 607 Medicare Part D claims per year.
What drugs does LEON NOWIERSKI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, LEON NOWIERSKI, M.D.'s most frequently prescribed drugs include Mupirocin, Doxycycline Hyclate, Triamcinolone Acetonide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LEON NOWIERSKI, M.D. accept Medicare?
LEON NOWIERSKI, M.D. appears in CMS Medicare data with 475 Part D claims and 186 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LEON NOWIERSKI, M.D.'s credentials?
LEON NOWIERSKI, M.D.'s NPI is 1376610048 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology