2026 NPPES data Physician Assistant NPI 1841626256 PA-C
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LESLIE BARRESI, PA-C

Physician Assistant in BOSTON, Massachusetts. 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
38
Medicare Part D claims · 17 beneficiaries · Physician Assistant avg: 790
MIPS score
86.2826/100
▲ 3 pts above national avg 83.1 · [object Object]
What the federal data reveals: LESLIE BARRESI, PA-C is a Physician Assistant ([object Object]) practicing in BOSTON, Massachusetts with a Medicare Part D prescribing footprint of 38 claims across 17 beneficiaries . Their CMS MIPS Final Score of 86.2826/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: LESLIE BARRESI, PA-C reported a CMS MIPS final score of 86.2826 out of 100, above the 83.1 national average, and filed 38 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

LESLIE BARRESI, PA-C at a glance

High performer (top quartile)

NPI registry status

Active

Issued 09/17/2013

NPI 1841626256

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

38 95% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

86.2826/100 3.182600000000008% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Massachusetts

How Physician Assistant compares to other specialties among Massachusetts providers

Massachusetts providers

Physician Assistant share within Massachusetts

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Massachusetts

Medicare quality performance — MIPS

LESLIE BARRESI, PA-C's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
86.2826/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 86.2826/100 vs national avg 83.1

0%100%National avg83%86.3%
MIPS final score (Physician Assistant) — 86.2826/100 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).

LESLIE BARRESI, PA-C is a Physician Assistant provider practicing in BOSTON, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA-C. NPI: 1841626256. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

LESLIE BARRESI, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 450 BROOKLINE AVE, BOSTON, MA, 02215, with a listed phone of (617) 632-3000. NPI 1841626256 was issued on 09/17/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BARRESI 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 38 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $4K 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 86.2826/100 for the 2023 performance year (Quality 69.3633), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

450 BROOKLINE AVE
BOSTON, MA 02215

Provider Details

NPI 1841626256
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 09/17/2013

CMS Quality Score (MIPS)

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

86.2826
Final Score
Avg: 83.1
69.3633
Quality
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where LESLIE BARRESI, PA-C 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.

DANA-FARBER CANCER INSTITUTE, INC.
BOSTON, MA

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

License & disciplinary context — Massachusetts BORIM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 — they are NOT specific to LESLIE BARRESI, PA-C. To verify LESLIE BARRESI, PA-C's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

38
Total Claims
$4K
Total Drug Cost
17
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
46
Total Day Supply
960
Generic Drug Cost
$751

Patient Demographics

Average Patient Age
76.9 years
Avg HCC Risk Score
2.11

Physician Assistant Overview

How LESLIE BARRESI, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

LESLIE BARRESI, PA-C's 38 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Massachusetts

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

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is LESLIE BARRESI, PA-C's specialty?
LESLIE BARRESI, PA-C specializes in Physician Assistant and practices in BOSTON, Massachusetts. Credentials: PA-C.
How much does LESLIE BARRESI, PA-C prescribe under Medicare Part D?
In 2023, LESLIE BARRESI, PA-C wrote 38 Medicare Part D claims totaling $4K in drug costs for 17 beneficiaries.
What is LESLIE BARRESI, PA-C's Medicare quality score?
LESLIE BARRESI, PA-C has a CMS MIPS Final Score of 86.2826/100 (Quality: 69.3633). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is LESLIE BARRESI, PA-C located?
LESLIE BARRESI, PA-C is located at 450 BROOKLINE AVE, BOSTON, MA, 02215. Phone: (617) 632-3000.
What is LESLIE BARRESI, PA-C's NPI number?
LESLIE BARRESI, PA-C's National Provider Identifier (NPI) is 1841626256, issued on 09/17/2013.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
Does LESLIE BARRESI, PA-C accept Medicare?
LESLIE BARRESI, PA-C appears in CMS Medicare data with 38 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LESLIE BARRESI, PA-C's credentials?
LESLIE BARRESI, PA-C's NPI is 1841626256 with credentials PA-C. 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