2026 NPPES data Medical Physician Assistant NPI 1639796790 MS, MPH, PA-C
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DANIEL DRZEWIECKI, MS, MPH, PA-C

Medical Physician Assistant in WEST ALLIS, Wisconsin. 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
946
Medicare Part D claims · 266 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$82.49
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DANIEL DRZEWIECKI, MS, MPH, PA-C filed 946 Medicare Part D claims in 2023 as a Medical Physician Assistant in WEST ALLIS, Wisconsin, prescribing 79% generic.

946
Part D claims, 2023
79%
generic prescribing
$82.49
industry payments (Sunshine Act)

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.

DANIEL DRZEWIECKI, MS, MPH, PA-C's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

946 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about DANIEL DRZEWIECKI, MS, MPH, PA-C?

Quality data not reported

NPI registry status

Active

Issued 07/06/2020

NPI 1639796790

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

946 12% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Wisconsin

How Medical Physician Assistant compares to other specialties among Wisconsin providers

Wisconsin providers

Medical Physician Assistant share within Wisconsin

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

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Medical Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

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).

DANIEL DRZEWIECKI, MS, MPH, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding MS, MPH, PA-C credentials at 2424 S 90TH ST, WEST ALLIS, WI, 53227, with a listed phone of (414) 328-8750. NPI 1639796790 was issued on 07/06/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DRZEWIECKI 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 946 prescription claims written by this provider, covering 266 Medicare beneficiaries and totaling roughly $335K in drug spend, split 21% brand-name and 79% generic by claim count. 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.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

2424 S 90TH ST
WEST ALLIS, WI 53227

Provider Details

NPI 1639796790
Specialty Medical Physician Assistant
Credentials MS, MPH, PA-C
Gender Male
NPI Issued 07/06/2020

Hospital and facility affiliations

Facilities where DANIEL DRZEWIECKI, MS, MPH, 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.

AURORA MEDICAL GROUP, INC.
MILWAUKEE, WI
LAKESHORE MEDICAL CLINIC LLC
SAINT FRANCIS, WI

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for DANIEL DRZEWIECKI, MS, MPH, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$82

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

DANIEL DRZEWIECKI, MS, MPH, PA-C — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 946 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.

946
Total Claims
$335K
Total Drug Cost
266
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,758
Total Day Supply
49,109
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$264K
Generic Drug Cost
$71K
Antibiotic Claims
53

Patient Demographics

Average Patient Age
69.9 years
Avg HCC Risk Score
1.68
Gender Split
62% female / 38% male
Age Distribution
<65: 53, 65-74: 132, 75-84: 68, 85+: 13

Top Prescribed Drugs (Medicare Part D)

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

What DANIEL DRZEWIECKI, MS, MPH, PA-C 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
Pantoprazole Sodium
176
Omeprazole
141
Linzess
Linaclotide
77
Famotidine
53
Mesalamine
30
Ondansetron Odt
Ondansetron
30
Dexlansoprazole Dr
Dexlansoprazole
27
Movantik
Naloxegol Oxalate
27
Sucralfate
27
Motegrity
Prucalopride Succinate
25

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

Medical Physician Assistant Overview

How DANIEL DRZEWIECKI, MS, MPH, PA-C fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

DANIEL DRZEWIECKI, MS, MPH, PA-C's 946 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Wisconsin

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

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

Frequently Asked Questions

What is DANIEL DRZEWIECKI, MS, MPH, PA-C's specialty?
DANIEL DRZEWIECKI, MS, MPH, PA-C specializes in Medical Physician Assistant and practices in WEST ALLIS, Wisconsin. Credentials: MS, MPH, PA-C.
How much does DANIEL DRZEWIECKI, MS, MPH, PA-C prescribe under Medicare Part D?
In 2023, DANIEL DRZEWIECKI, MS, MPH, PA-C wrote 946 Medicare Part D claims totaling $335K in drug costs for 266 beneficiaries.
Where is DANIEL DRZEWIECKI, MS, MPH, PA-C located?
DANIEL DRZEWIECKI, MS, MPH, PA-C is located at 2424 S 90TH ST, WEST ALLIS, WI, 53227. Phone: (414) 328-8750.
What is DANIEL DRZEWIECKI, MS, MPH, PA-C's NPI number?
DANIEL DRZEWIECKI, MS, MPH, PA-C's National Provider Identifier (NPI) is 1639796790, issued on 07/06/2020.
Does DANIEL DRZEWIECKI, MS, MPH, PA-C prescribe more brand-name or generic drugs?
DANIEL DRZEWIECKI, MS, MPH, PA-C's prescribing is 21% brand-name and 79% generic drugs by claim count, with $264K in brand drug costs.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does DANIEL DRZEWIECKI, MS, MPH, PA-C prescribe most often?
Based on 2023 Medicare Part D data, DANIEL DRZEWIECKI, MS, MPH, PA-C's most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DANIEL DRZEWIECKI, MS, MPH, PA-C accept Medicare?
DANIEL DRZEWIECKI, MS, MPH, PA-C appears in CMS Medicare data with 946 Part D claims and 266 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DANIEL DRZEWIECKI, MS, MPH, PA-C's credentials?
DANIEL DRZEWIECKI, MS, MPH, PA-C's NPI is 1639796790 with credentials MS, MPH, 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.
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