JEANINE ELAINE SIENKOWSKI APN
NPI 1194807966
Nurse Practitioner in Downers Grove, IL

Q: What is Jeanine Sienkowski's NPI number?

The NPI number for Jeanine Sienkowski is 1194807966. It was assigned to this individual provider in the NPPES registry on October 20, 2006. The provider is also known as Jeanine Elaine Davies.

Q: What is Jeanine Sienkowski's specialty?

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

Active since October 20, 2006PECOS EnrolledAccepts Medicare Assignment

1441 BRANDING AVE STE 310, DOWNERS GROVE, IL 60515(630) 829-1038(630) 829-1040 Get Directions Write a Review

NPPES record last updated: May 5, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Jeanine Elaine Sienkowski Apn NPPES

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

JEANINE ELAINE SIENKOWSKI APN (NPI 1194807966) is an individual nurse practitioner in Downers Grove, Illinois, licensed in Illinois (277-000761) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1194807966

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameJEANINE ELAINE SIENKOWSKICredential: APN

Location Address1441 BRANDING AVE STE 310Downers Grove, IL 60515-5624

Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900

Phone(630) 829-1038

Fax(630) 829-1040

Sole ProprietorNo

Medical School CMSOtherGraduated 2008

Enumeration DateOctober 20, 2006

Last NPPES UpdateMay 5, 2023

NPPES CertifiedMay 5, 2023

✔ NPI 1194807966 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

Licenses✔ Licensed in IL · 277-000761✔ Licensed in IN · 71005498A

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 277-000761 (IL)

1441 BRANDING AVE STE 310, Downers Grove, IL 60515

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Other Names 1

Former Name (1)Jeanine Elaine Davies

Other Identifiers 2

OtherP01489127IN · Railroad Medicare

Other71005498AIN · License

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

Jeanine Elaine Sienkowski Apn 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 ID6901874536

PECOS Enrollment IDI20040922000203

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 Jeanine Sienkowski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Advocate Health And Hospitals Corporation

1.2 mi

General Acute Care Hospital

3815 HIGHLAND AVE
Downers Grove, IL 60515

Reassigned Medicare billing, Illinois enrollment
4,870 clinicians in this Medicare group

NPI 1578670543 (630) 275-5900

Integrated Rehab Consultants LLC

21 mi

Physical Medicine & Rehabilitation

401 N MICHIGAN AVENUE
Chicago, IL 60611

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

NPI 1528379195 (725) 710-9208

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60515 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

$93.02 typical visit price

range $59.81 – $181.38

Typical copayment $23.25 (range $14.95 – $45.34)

Most-billed visit code 99203

Established Patient

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Lightweight wheelchair K0003

DME-Wheelchairs · category DD000N

2 suppliers15 claims15 services$30.48 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

THERESA DOLAN APN

Nurse Practitioner (Family)