Jennifer I. Klaas, NP
Nurse Practitioner · Hazel Crest, IL
Jennifer I. Klaas, NP is a nurse practitioner with a practice address in Hazel Crest, Illinois, and NPI 1932469640, issued on May 29, 2012. Check the license (Illinois 209-009566, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jennifer I. Klaas
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 209-009566 IL
Self-reported in NPPES; status is on the state search - Practice location
- 17850 Kedzie Ave Ste 2100, Hazel Crest, IL 60429
- Phone
- (708) 957-4011
- Enumerated
- May 29, 2012
- Record last updated
- Feb 7, 2025
- Fax
- (708) 957-4013
- Medicare enrollment
- Enrolled (PECOS I20120821000898); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2011
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 17850 Kedzie Ave Ste 2100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Constance Pietrzak, M.D.Gastroenterology Physician1174788343
Verify Jennifer I. Klaas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209-009566Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $86.51
1 payment: food and beverage; the largest payer was Medtronic, Inc. The 38,884 providers of this specialty with any payment received $791.64 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
- 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).
Jennifer I. Klaas among 4,892 nurse practitioner records in Illinois
Jennifer I. Klaas, NP is one of 4,892 nurse practitioner records with a practice address in Illinois. 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 2012, is newer than 22% of them.
- NPI issued2012 · 22% of these records are older, 75% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2018 among the 3,389 with a school on file
- Record last updated2025 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 nurse practitioner records list a practice address in Hazel Crest
They are 12 of the 368 NPPES records with a practice address in Hazel Crest, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Hazel Crest → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Tawakalitu BabawaleHazel Crest, IL 604291043820517
- Beth Cavinder, N.P.Hazel Crest, IL 604291285828681
- Evelyn GalHazel Crest, IL 604291518699420
- Caitlin Julian, AGACNP-BCHazel Crest, IL 604291740876648
- Kinsey MelendezHazel Crest, IL 604291174045462
- Sandra Mikulich, APNHazel Crest, IL 604291528216082
- Naila O'ConnellHazel Crest, IL 604291114453768
- Andrea Pawlak, APRN, FNP-BCHazel Crest, IL 604291053898130
Common questions
What is Jennifer I. Klaas, NP's NPI number?
Jennifer I. Klaas, NP's National Provider Identifier (NPI) is 1932469640, issued on May 29, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer I. Klaas, NP located?
The NPPES record lists a practice address at 17850 Kedzie Ave Ste 2100, Hazel Crest, IL, 60429. Phone: (708) 957-4011. Providers update this record themselves, so call before visiting.
How can I verify Jennifer I. Klaas, NP's license?
NPPES lists Illinois license number 209-009566, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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.