Katherine S. Laszkiewicz, PA-C
Physician Assistant · Grafton, WI
Katherine S. Laszkiewicz, PA-C is a physician assistant with a practice address in Grafton, Wisconsin, and NPI 1275029589, issued on Jul 10, 2018. Check the license (Wisconsin 4847, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine S. Laszkiewicz
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 4847 WI
Self-reported in NPPES; status is on the state search - Practice location
- 215 Washington St, Grafton, WI 53024
- Phone
- (262) 375-3700
- Enumerated
- Jul 10, 2018
- Record last updated
- Sep 2, 2025
- Medicaid ID
- 1000092576 WI
- Medicare enrollment
- Enrolled (PECOS I20190924000419); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 215 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine S. Laszkiewicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 4847Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average physician assistant in 2024
412 Medicare Part D claims for 178 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Ketoconazole66 claims
- Triamcinolone Acetonide45 claims
- Clobetasol Propionate33 claims
- Hydrocortisone31 claims
- Fluocinonide26 claims
- Mupirocin26 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $299.96
2 payments; by number, the most common kind was food and beverage; the largest payer was Galderma Laboratories, L.P. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Aurora Advanced Healthcare, Inc.Mequon, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine S. Laszkiewicz among 3,475 physician assistant records in Wisconsin
Katherine S. Laszkiewicz, PA-C is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 61% of them.
- NPI issued2018 · 61% of these records are older, 34% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2019 · median 2016 among the 2,491 with a school on file
- Record last updated2025 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 physician assistant records list a practice address in Grafton
They are 33 of the 459 NPPES records with a practice address in Grafton, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Grafton → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Heidi Bauwens, PA-CGrafton, WI 530241316382211
- Kelsey BeaupreGrafton, WI 530241154703593
- Joseph DarinGrafton, WI 530241124353883
- Kristina Elfe, PA-CGrafton, WI 530241497063036
- Carmen Glime, PAGrafton, WI 530241699796763
- Kristin Humpal, PA-CGrafton, WI 530241558524868
- Christopher Kelley, PA-CGrafton, WI 530241871529818
- Scott Mehlos, PA-CGrafton, WI 530241336170562
Common questions
What is Katherine S. Laszkiewicz, PA-C's NPI number?
Katherine S. Laszkiewicz, PA-C's National Provider Identifier (NPI) is 1275029589, issued on Jul 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Katherine S. Laszkiewicz, PA-C located?
The NPPES record lists a practice address at 215 Washington St, Grafton, WI, 53024. Phone: (262) 375-3700. Providers update this record themselves, so call before visiting.
How can I verify Katherine S. Laszkiewicz, PA-C's license?
NPPES lists Wisconsin license number 4847, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine S. Laszkiewicz, PA-C prescribe under Medicare Part D?
In 2024, Katherine S. Laszkiewicz, PA-C had 412 Medicare Part D claims for 178 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.