Kathy Kleszcz, NP-C
Family Nurse Practitioner · Chicago, IL
Kathy Kleszcz, NP-C is a family nurse practitioner with a practice address in Chicago, Illinois, and NPI 1104221431, issued on Oct 29, 2014. Check the license (Illinois 277-001084, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathy Kleszcz
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 277-001084 IL
209-012333 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4600 N Ravenswood Ave, Chicago, IL 60640
- Phone
- (773) 561-7500
- Enumerated
- Oct 29, 2014
- Record last updated
- Feb 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20150611002456); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 4600 N Ravenswood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kathy Kleszcz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 277-001084Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average family nurse practitioner in 2024
769 Medicare Part D claims for 55 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Donepezil Hcl58 claims
- Atorvastatin Calcium42 claims
- Amlodipine Besylate41 claims
- Potassium Chloride40 claims
- Quetiapine Fumarate40 claims
- Sertraline Hcl38 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
- Advocate Health And Hospitals CorporationBuffalo Grove, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathy Kleszcz among 7,639 family nurse practitioner records in Illinois
Kathy Kleszcz, NP-C 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 2014, is newer than 20% of them.
- NPI issued2014 · 20% of these records are older, 76% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2018 among the 4,778 with a school on file
- Record last updated2025 · 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).
1,567 family nurse practitioner records list a practice address in Chicago
They are 1,567 of the 63,379 NPPES records with a practice address in Chicago, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Chicago → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
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- Diana Fabian, FNP-BCChicago, IL 606401881102457
- Lisa Johnson, FNP, DNPChicago, IL 606401477914158
- Darcie McDonaugh, APNChicago, IL 606401730578964
- Margaret Okodua, DNP, APN, RN, FNP-BCChicago, IL 606401851683536
- Jack Pham, DNP, APRNFPA, FNP-BCChicago, IL 606401427566454
Common questions
What is Kathy Kleszcz, NP-C's NPI number?
Kathy Kleszcz, NP-C's National Provider Identifier (NPI) is 1104221431, issued on Oct 29, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Kathy Kleszcz, NP-C located?
The NPPES record lists a practice address at 4600 N Ravenswood Ave, Chicago, IL, 60640. Phone: (773) 561-7500. Providers update this record themselves, so call before visiting.
How can I verify Kathy Kleszcz, NP-C's license?
NPPES lists Illinois license number 277-001084, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Kathy Kleszcz, NP-C prescribe under Medicare Part D?
In 2024, Kathy Kleszcz, NP-C had 769 Medicare Part D claims for 55 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.