NPPES file of Aug 9, 2026

Katarzyna Maria Witowski, FNP

Family Nurse Practitioner · Homer Glen, IL

Katarzyna Maria Witowski, FNP is a family nurse practitioner with a practice address in Homer Glen, Illinois, and NPI 1184103194, issued on Aug 9, 2018. Check the license (Illinois 209017714, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1184103194
Name
Katarzyna Maria Witowski
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
209017714 IL
Self-reported in NPPES; status is on the state search
Practice location
13253 W Hiawatha Dr, Homer Glen, IL 60491
Phone
(708) 262-2595
Enumerated
Aug 9, 2018
Record last updated
Aug 9, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20180911001397); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Katarzyna Maria Witowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 209017714
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Illinois license search

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45% fewer Medicare Part D claims than the average family nurse practitioner in 2024

713 Medicare Part D claims for 187 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Katarzyna Witowski713
  2. Specialty average1,305

Most prescribed

  1. Cephalexin54 claims
  2. Atorvastatin Calcium53 claims
  3. Furosemide40 claims
  4. Naproxen33 claims
  5. Celecoxib32 claims
  6. Meloxicam32 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.

Bills Medicare through one group practice

  1. Midwest Orthopedic Consultants SCOrland Park, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katarzyna Maria Witowski among 7,639 family nurse practitioner records in Illinois

Katarzyna Maria Witowski, FNP is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% 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 44% of them.

  • NPI issued2018 · 44% of these records are older, 49% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2017 · median 2018 among the 4,778 with a school on file
  • Record last updated2018 · 39% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Family Nurse Practitioner providers in Illinois

There are 7,639 family nurse practitioner records in Illinois.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Sheeraz YousifHomer Glen, IL 604911396205308
  2. Michael Aligno, MSN, APN, FNP-BCBolingbrook, IL 604901174165096
  3. Jacinta Igbo, APRN, NP-BCBolingbrook, IL 604901225692080
  4. Sylvere MalongaBolingbrook, IL 604901497311104
  5. Helen Muddamalle, NPBolingbrook, IL 604901518103134
  6. Isoken Ogbomo, FNPBolingbrook, IL 604901275049694
  7. Monique Szczepanik, APRN, FNP-BCBolingbrook, IL 604901558088427
  8. Tracey Dawson, APRNTinley Park, IL 604871174330518

Common questions

What is Katarzyna Maria Witowski, FNP's NPI number?

Katarzyna Maria Witowski, FNP's National Provider Identifier (NPI) is 1184103194, issued on Aug 9, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Katarzyna Maria Witowski, FNP located?

The NPPES record lists a practice address at 13253 W Hiawatha Dr, Homer Glen, IL, 60491. Phone: (708) 262-2595. Providers update this record themselves, so call before visiting.

How can I verify Katarzyna Maria Witowski, FNP's license?

NPPES lists Illinois license number 209017714, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Katarzyna Maria Witowski, FNP prescribe under Medicare Part D?

In 2024, Katarzyna Maria Witowski, FNP had 713 Medicare Part D claims for 187 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.