2026 NPPES data Medical Physician Assistant NPI 1104384015 PA-C
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JENNIFER GUINN, PA-C

Medical Physician Assistant in LA CROSSE, 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
287
Medicare Part D claims · 122 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JENNIFER GUINN, PA-C filed 287 Medicare Part D claims in 2023 as a Medical Physician Assistant in LA CROSSE, Wisconsin, prescribing 90% generic.

287
Part D claims, 2023
90%
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.

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

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

287 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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 JENNIFER GUINN, PA-C?

Quality data not reported

NPI registry status

Active

Issued 03/10/2019

NPI 1104384015

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

287 73% 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).

JENNIFER GUINN, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 1836 SOUTH AVE, LA CROSSE, WI, 54601, with a listed phone of (608) 782-7300. NPI 1104384015 was issued on 03/10/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUINN 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 287 prescription claims written by this provider, covering 122 Medicare beneficiaries and totaling roughly $9K in drug spend, split 10% brand-name and 90% 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

1836 SOUTH AVE
LA CROSSE, WI 54601

Provider Details

NPI 1104384015
Specialty Medical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 03/10/2019

Hospital and facility affiliations

Facilities where JENNIFER GUINN, 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.

GUNDERSEN CLINIC LTD
SPARTA, WI
GUNDERSEN LUTHERAN MEDICAL CENTER INC
LA CROSSE, 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

JENNIFER GUINN, PA-C — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 287 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.

287
Total Claims
$9K
Total Drug Cost
122
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
405
Total Day Supply
8,952
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$3K
Generic Drug Cost
$6K
Antibiotic Claims
28

Patient Demographics

Average Patient Age
70.3 years
Avg HCC Risk Score
1.33
Gender Split
58% female / 42% male

Top Prescribed Drugs (Medicare Part D)

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

What JENNIFER GUINN, 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
Omeprazole
50
Fluticasone Propionate
25
Triamcinolone Acetonide
25
Ciprofloxacin-Dexamethasone
Ciprofloxacin Hcl/Dexameth
16
Ofloxacin
16
Prednisone
11

* 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 JENNIFER GUINN, 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

JENNIFER GUINN, PA-C's 287 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 GUINN.

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

Frequently Asked Questions

What is JENNIFER GUINN, PA-C's specialty?
JENNIFER GUINN, PA-C specializes in Medical Physician Assistant and practices in LA CROSSE, Wisconsin. Credentials: PA-C.
How much does JENNIFER GUINN, PA-C prescribe under Medicare Part D?
In 2023, JENNIFER GUINN, PA-C wrote 287 Medicare Part D claims totaling $9K in drug costs for 122 beneficiaries.
Where is JENNIFER GUINN, PA-C located?
JENNIFER GUINN, PA-C is located at 1836 SOUTH AVE, LA CROSSE, WI, 54601. Phone: (608) 782-7300.
What is JENNIFER GUINN, PA-C's NPI number?
JENNIFER GUINN, PA-C's National Provider Identifier (NPI) is 1104384015, issued on 03/10/2019.
Does JENNIFER GUINN, PA-C prescribe more brand-name or generic drugs?
JENNIFER GUINN, PA-C's prescribing is 10% brand-name and 90% generic drugs by claim count, with $3K 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 JENNIFER GUINN, PA-C prescribe most often?
Based on 2023 Medicare Part D data, JENNIFER GUINN, PA-C's most frequently prescribed drugs include Omeprazole, Fluticasone Propionate, Triamcinolone Acetonide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNIFER GUINN, PA-C accept Medicare?
JENNIFER GUINN, PA-C appears in CMS Medicare data with 287 Part D claims and 122 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNIFER GUINN, PA-C's credentials?
JENNIFER GUINN, PA-C's NPI is 1104384015 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