LESLIE A. GRESKOWIAK APN-CNP
NPI 1164998332
Nurse Practitioner in Hinsdale, IL
About Leslie A. Greskowiak Apn-cnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LESLIE A. GRESKOWIAK APN-CNP (NPI 1164998332) is an individual nurse practitioner in Hinsdale, Illinois, licensed in Illinois (209018380) and active in the NPI registry since October 2018. She is enrolled in Medicare PECOS, is affiliated with Elmhurst Memorial Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Leslie A. Greskowiak Apn-cnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Elmhurst Memorial Hospital
Acute Care Hospitals · Elmhurst, ILEdward Hospital
Acute Care Hospitals · Naperville, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60521 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Leslie Greskowiak's NPI number?
The NPI number for Leslie Greskowiak is 1164998332. It was assigned to this individual provider in the NPPES registry on October 15, 2018.
Where is Leslie Greskowiak located?
Leslie Greskowiak practices at 8 Salt Creek Ln Ste 301, Hinsdale, IL 60521. The listed phone number is (331) 221-2550.
What is Leslie Greskowiak's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Leslie Greskowiak enrolled in Medicare?
Yes. Leslie Greskowiak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Is Leslie Greskowiak affiliated with any hospitals?
According to CMS data, Leslie Greskowiak is affiliated with Elmhurst Memorial Hospital and Edward Hospital.
When was this NPI record last updated?
The NPPES record for Leslie Greskowiak was last updated on May 12, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
