WENDY L. GREEP APN-CNP
NPI 1205448636
Nurse Practitioner in Oswego, IL

Q: What is Wendy Greep's NPI number?

The NPI number for Wendy Greep is 1205448636. It was assigned to this individual provider in the NPPES registry on August 18, 2020.

Q: What is Wendy Greep's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Wendy Greep was last updated on May 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 18, 2020PECOS EnrolledAccepts Medicare Assignment

4789 ROUTE 71, OSWEGO, IL 60543(630) 692-5730(630) 692-5731 Get Directions Write a Review

NPPES record last updated: May 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 12, 2026, Jun 28, 2021, Feb 18, 2021 and 1 more (4 updates tracked since 2020).

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About Wendy L. Greep Apn-cnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WENDY L. GREEP APN-CNP (NPI 1205448636) is an individual nurse practitioner in Oswego, Illinois, licensed in Illinois (209021825) and active in the NPI registry since August 2020. She is enrolled in Medicare PECOS, is affiliated with Elmhurst Memorial Hospital, and maintains a secondary practice location in Yorkville.

NPPES Registry Identity

NPI1205448636

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameWENDY L. GREEPCredential: APN-CNP

Location Address4789 ROUTE 71Oswego, IL 60543-7415

Mailing Address4789 Route 71Oswego, IL 60543-7415 · (630) 692-5730 · Fax (630) 692-5731

Phone(630) 692-5730

Fax(630) 692-5731

Sole ProprietorYes

Medical School CMSOtherGraduated 2020

Enumeration DateAugust 18, 2020

Last NPPES UpdateMay 12, 20264 updates tracked since enumeration

NPPES CertifiedMay 12, 2026

✔ NPI 1205448636 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in IL · 209021825

Definition

(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.

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 209021825 (IL)

4789 ROUTE 71, Oswego, IL 60543

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Secondary Practice Location 1

Location 1294 Walsh CirYorkville, IL 60560-5809 · Phone (815) 931-8733

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Wendy L. Greep 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.

PECOS PAC ID749695682

PECOS Enrollment IDI20210226000905

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Wendy Greep reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rush-Copley Medical Group, Nfp

Same address

Obstetrics & Gynecology

4789 ROUTE 71
Oswego, IL 60543

Reassigned Medicare billing, Illinois enrollment
171 clinicians in this Medicare group

NPI 1508055351 (630) 978-6204

Endeavor Health Medical Group

44 mi

Allergy & Immunology

1000 CENTRAL ST
Evanston, IL 60201

Reassigned Medicare billing, Illinois enrollment
4,841 clinicians in this Medicare group

NPI 1497701882 (847) 570-5235

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

54 services50 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

17 services17 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

15 services15 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL

4/5 CMS rating

OwnershipProprietary

CMS Certification Number140200

Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60543 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$85.71 typical visit price

range $54.80 – $168.44

Typical copayment $21.42 (range $13.70 – $42.11)

Most-billed visit code 99203

Established Patient

$97.25 typical visit price

range $17.16 – $136.56

Typical copayment $24.31 (range $4.29 – $34.14)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DANIELLE HYATT MD

Pediatrics