2026 NPPES data Medical Physician Assistant NPI 1336452440 PA-C
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KATRINA JOSKI, 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
907
Medicare Part D claims · 366 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

KATRINA JOSKI, PA-C filed 907 Medicare Part D claims in 2023 as a Medical Physician Assistant in WEST ALLIS, Wisconsin, prescribing 84% generic.

907
Part D claims, 2023
84%
generic prescribing

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.

KATRINA JOSKI, PA-C's Medicare Part D volume vs every U.S. prescriber

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

907 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 KATRINA JOSKI, PA-C?

Quality data not reported

NPI registry status

Active

Issued 07/17/2010

NPI 1336452440

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

907 16% 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).

KATRINA JOSKI, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 11211 W LINCOLN AVE, WEST ALLIS, WI, 53227, with a listed phone of (414) 454-8300. NPI 1336452440 was issued on 07/17/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JOSKI 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 907 prescription claims written by this provider, covering 366 Medicare beneficiaries and totaling roughly $83K in drug spend, split 16% brand-name and 84% generic by claim count, with an opioid prescribing rate of 4.4%. 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.

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

11211 W LINCOLN AVE
WEST ALLIS, WI 53227

Provider Details

NPI 1336452440
Specialty Medical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 07/17/2010

Hospital and facility affiliations

Facilities where KATRINA JOSKI, 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.

FROEDTERT ANDTHE MEDICAL COLLEGE OF WISCONSIN COMMUNITY PHYSICIANS INC
WEST ALLIS, 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).

Brand vs generic prescribing mix · Typical

KATRINA JOSKI, PA-C — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 907 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.

907
Total Claims
$83K
Total Drug Cost
366
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,627
Total Day Supply
42,203
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$69K
Generic Drug Cost
$13K
Opioid Claims
40 (4.4% rate)
Antibiotic Claims
113

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
1.36
Gender Split
74% female / 26% male
Age Distribution
<65: 39, 65-74: 173, 75-84: 98, 85+: 56

Top Prescribed Drugs (Medicare Part D)

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

What KATRINA JOSKI, 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
Amlodipine Besylate
42
Atorvastatin Calcium
34
Levothyroxine Sodium
32
Losartan Potassium
32
Prednisone
29
Metformin Hcl
26
Azithromycin
25
Gabapentin
24
Mupirocin
21
Albuterol Sulfate Hfa
Albuterol Sulfate
19

* 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 KATRINA JOSKI, 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

KATRINA JOSKI, PA-C's 907 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 JOSKI.

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

Frequently Asked Questions

What is KATRINA JOSKI, PA-C's specialty?
KATRINA JOSKI, PA-C specializes in Medical Physician Assistant and practices in WEST ALLIS, Wisconsin. Credentials: PA-C.
How much does KATRINA JOSKI, PA-C prescribe under Medicare Part D?
In 2023, KATRINA JOSKI, PA-C wrote 907 Medicare Part D claims totaling $83K in drug costs for 366 beneficiaries.
Where is KATRINA JOSKI, PA-C located?
KATRINA JOSKI, PA-C is located at 11211 W LINCOLN AVE, WEST ALLIS, WI, 53227. Phone: (414) 454-8300.
What is KATRINA JOSKI, PA-C's NPI number?
KATRINA JOSKI, PA-C's National Provider Identifier (NPI) is 1336452440, issued on 07/17/2010.
Does KATRINA JOSKI, PA-C prescribe more brand-name or generic drugs?
KATRINA JOSKI, PA-C's prescribing is 16% brand-name and 84% generic drugs by claim count, with $69K in brand drug costs.
Does KATRINA JOSKI, PA-C prescribe opioids?
Yes, KATRINA JOSKI, PA-C had 40 opioid claims in 2023 with an opioid prescribing rate of 4.4%.
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 KATRINA JOSKI, PA-C prescribe most often?
Based on 2023 Medicare Part D data, KATRINA JOSKI, PA-C's most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATRINA JOSKI, PA-C accept Medicare?
KATRINA JOSKI, PA-C appears in CMS Medicare data with 907 Part D claims and 366 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATRINA JOSKI, PA-C's credentials?
KATRINA JOSKI, PA-C's NPI is 1336452440 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.
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