MARY KAY LARSON APN
NPI 1124293691
Nurse Practitioner in Warrenville, IL

Active since April 25, 2008PECOS EnrolledAccepts Medicare Assignment
4405 WEAVER PKWY, WARRENVILLE, IL 60555(630) 352-5450(630) 352-5499 Get Directions Write a Review

NPPES record last updated: April 22, 2013. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mary Kay Larson Apn NPPES

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

MARY KAY LARSON APN (NPI 1124293691) is an individual nurse practitioner in Warrenville, Illinois, licensed in Illinois (209006678) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1124293691
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARY KAY LARSONCredential: APN
Location Address4405 WEAVER PKWYWarrenville, IL 60555-3269
Mailing Address4405 Weaver PkwyWarrenville, IL 60555-3269 · (630) 352-5450 · Fax (630) 352-5499
Fax(630) 352-5499
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateApril 25, 2008
Last NPPES UpdateApril 22, 2013
NPI 1124293691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License Licensed in IL · 209006678
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.

4405 WEAVER PKWY, Warrenville, IL 60555

Other Identifiers 2

Medicaid$$$$$$$$$001IL
Other206147214IL · Medicare Ptan (individual)

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

Mary Kay Larson 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 ID2769534221
PECOS Enrollment IDI20260327001377
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60555 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.

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.

Radiology (Radiation Oncology)
4405 WEAVER PKWY
WARRENVILLE, IL 60555
Physician Assistant
4405 WEAVER PKWY
WARRENVILLE, IL 60555
Physician Assistant
4405 WEAVER PKWY
WARRENVILLE, IL 60555
Nurse Practitioner (Adult Health)
4405 WEAVER PKWY
WARRENVILLE, IL 60555
Physician Assistant (Surgical)
4405 WEAVER PKWY
WARRENVILLE, IL 60555
Neurological Surgery
4405 WEAVER PKWY
WARRENVILLE, IL 60555
Clinic/Center (Oncology)
4405 WEAVER PKWY
WARRENVILLE, IL 60555
Nurse Practitioner
4405 WEAVER PKWY
WARRENVILLE, IL 60555

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 Mary Kay Larson's NPI number?

The NPI number for Mary Kay Larson is 1124293691. It was assigned to this individual provider in the NPPES registry on April 25, 2008.

Where is Mary Kay Larson located?

Mary Kay Larson practices at 4405 Weaver Pkwy, Warrenville, IL 60555. The listed phone number is (630) 352-5450.

What is Mary Kay Larson's specialty?

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

Is Mary Kay Larson enrolled in Medicare?

Yes. Mary Kay Larson 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.

When was this NPI record last updated?

The NPPES record for Mary Kay Larson was last updated on April 22, 2013. NPI Profile syncs with the weekly NPPES data releases published by CMS.