2026 NPPES data Physician Assistant NPI 1851385280 PAC
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JOANNA BREUNIG, PAC

Physician Assistant in TRUMBULL, Connecticut. 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
2K
Medicare Part D claims · 308 beneficiaries · Physician Assistant avg: 790
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.2757/100
▲ 10 pts above national avg 83.1 · [object Object]
What the federal data reveals: JOANNA BREUNIG, PAC is a Physician Assistant ([object Object]) practicing in TRUMBULL, Connecticut with a Medicare Part D prescribing footprint of 2K claims across 308 beneficiaries — 13% brand-name prescribing . Their CMS MIPS Final Score of 93.2757/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: JOANNA BREUNIG, PAC reported a CMS MIPS final score of 93.2757 out of 100, above the 83.1 national average, and filed 2,396 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

JOANNA BREUNIG, PAC at a glance

High performer (top quartile)

NPI registry status

Active

Issued 08/31/2005

NPI 1851385280

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

2,396 203% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

93.2757/100 10.175700000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Connecticut

How Physician Assistant compares to other specialties among Connecticut providers

Connecticut providers

Physician Assistant share within Connecticut

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

Medicare quality performance — MIPS

JOANNA BREUNIG, PAC's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
93.2757/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 93.2757/100 vs national avg 83.1

0%100%National avg83%93.3%
MIPS final score (Physician Assistant) — 93.2757/100 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).

JOANNA BREUNIG, PAC is a Physician Assistant provider practicing in TRUMBULL, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PAC. NPI: 1851385280. 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.

JOANNA BREUNIG, PAC appears in the CMS NPPES registry as a Physician Assistant provider holding PAC credentials at 115 TECHNOLOGY DR UNIT C301, TRUMBULL, CT, 06611, with a listed phone of (203) 268-4884. NPI 1851385280 was issued on 08/31/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BREUNIG 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 2,396 prescription claims written by this provider, covering 308 Medicare beneficiaries and totaling roughly $155K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.4%. 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 93.2757/100 for the 2023 performance year (Quality 81.7219), 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

115 TECHNOLOGY DR UNIT C301
TRUMBULL, CT 06611

Provider Details

NPI 1851385280
Specialty Physician Assistant
Credentials PAC
Gender Female
NPI Issued 08/31/2005

CMS Quality Score (MIPS)

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

93.2757
Final Score
Avg: 83.1
81.7219
Quality
78.0315
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where JOANNA BREUNIG, PAC 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.

NORTHEAST MEDICAL GROUP INC
TRUMBULL, CT

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

Brand vs generic prescribing mix · Typical

JOANNA BREUNIG, PAC — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 2,396 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

2,396
Total Claims
$155K
Total Drug Cost
308
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,716
Total Day Supply
135,127
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$118K
Generic Drug Cost
$34K
Opioid Claims
34 (1.4% rate)
Antibiotic Claims
109

Patient Demographics

Average Patient Age
76.2 years
Avg HCC Risk Score
1.07
Gender Split
69% female / 31% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
301
Atorvastatin Calcium
134
Montelukast Sodium
133
Escitalopram Oxalate
108
Amlodipine Besylate
87
Alprazolam
84
Albuterol Sulfate Hfa
Albuterol Sulfate
74
Synthroid
Levothyroxine Sodium
54
Zolpidem Tartrate
52
Prednisone
50

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

Physician Assistant Overview

How JOANNA BREUNIG, PAC fits within the Physician Assistant landscape nationally.

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

JOANNA BREUNIG, PAC's 2,396 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Connecticut

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

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

Frequently Asked Questions

What is JOANNA BREUNIG, PAC's specialty?
JOANNA BREUNIG, PAC specializes in Physician Assistant and practices in TRUMBULL, Connecticut. Credentials: PAC.
How much does JOANNA BREUNIG, PAC prescribe under Medicare Part D?
In 2023, JOANNA BREUNIG, PAC wrote 2,396 Medicare Part D claims totaling $155K in drug costs for 308 beneficiaries.
What is JOANNA BREUNIG, PAC's Medicare quality score?
JOANNA BREUNIG, PAC has a CMS MIPS Final Score of 93.2757/100 (Quality: 81.7219). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOANNA BREUNIG, PAC located?
JOANNA BREUNIG, PAC is located at 115 TECHNOLOGY DR UNIT C301, TRUMBULL, CT, 06611. Phone: (203) 268-4884.
What is JOANNA BREUNIG, PAC's NPI number?
JOANNA BREUNIG, PAC's National Provider Identifier (NPI) is 1851385280, issued on 08/31/2005.
Does JOANNA BREUNIG, PAC prescribe more brand-name or generic drugs?
JOANNA BREUNIG, PAC's prescribing is 13% brand-name and 87% generic drugs by claim count, with $118K in brand drug costs.
Does JOANNA BREUNIG, PAC prescribe opioids?
Yes, JOANNA BREUNIG, PAC had 34 opioid claims in 2023 with an opioid prescribing rate of 1.4%.
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.
What drugs does JOANNA BREUNIG, PAC prescribe most often?
Based on 2023 Medicare Part D data, JOANNA BREUNIG, PAC's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOANNA BREUNIG, PAC accept Medicare?
JOANNA BREUNIG, PAC appears in CMS Medicare data with 2,396 Part D claims and 308 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOANNA BREUNIG, PAC's credentials?
JOANNA BREUNIG, PAC's NPI is 1851385280 with credentials PAC. 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