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MARY SCHLEGEL AU.D.
NPI 1417989336
Audiologist in Naperville, IL

Active since July 07, 2006Accepts Medicare Assignment
808 RICKERT DR STE 200, NAPERVILLE, IL 60540(630) 364-7410(630) 718-2655 Get Directions Write a Review

NPPES record last updated: July 25, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 25, 2023, May 19, 2017 (2 updates tracked since 2017).

About Mary Schlegel Au.d. NPPES

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

MARY SCHLEGEL AU.D. (NPI 1417989336) is an individual audiologist in Naperville, Illinois, licensed in Illinois (147000816) and active in the NPI registry since July 2006. She is a graduate of Other (2006).

NPPES Registry Identity

NPI1417989336
Entity TypeIndividualFemale
Primary Taxonomy231H00000X
Provider Legal NameMARY SCHLEGELCredential: AU.D.
Location Address808 RICKERT DR STE 200Naperville, IL 60540-0910
Mailing AddressPo Box 713260Chicago, IL 60677-1260 · (630) 469-9200
Phone(630) 364-7410
Fax(630) 718-2655
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateJuly 7, 2006
Last NPPES UpdateJuly 25, 20232 updates tracked since enumeration
NPPES CertifiedJuly 25, 2023
✔ NPI 1417989336 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAudiologistSpeech, Language and Hearing Service Providers
Taxonomy Code231H00000X
License✔ Licensed in IL · 147000816
Definition
(1) A specialist in evaluation, habilitation and rehabilitation of those whose communication disorders center in whole or in part in hearing function. Audiologists are autonomous professionals who identify, assess, and manage disorders of the auditory, balance and other neural systems. Audiologists provide audiological (aural) rehabilitation to children and adults across the entire age span. Audiologists select, fit and dispense amplification systems such as hearing aids and related devices. (2) An audiologist is a person qualified by a master's degree in audiology, licensed by the state, where applicable, and practicing within the scope of that license. Audiologists evaluate and treat patients with impaired hearing. They plan, direct and conduct rehabilitative programs with audiotry substitutional devises (hearing aids) and other therapy.
808 RICKERT DR STE 200, Naperville, IL 60540
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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

Mary Schlegel Au.d. 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 ID7719018530
PECOS Enrollment IDI20100623000247

Medicare Billing Reassignment

Medicare enrollment records show Mary Schlegel reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Dupage Medical Group Ltd
10 mi
Multi-Specialty
1100 W 31ST ST, STE 300
Downers Grove, IL 60515
  • Reassigned Medicare billing, Illinois enrollment
  • 1,061 clinicians in this Medicare group
NPI 1801833983 (630) 469-9200

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 4

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.

Comprehensive hearing and speech recognition test 92557
A comprehensive hearing and speech recognition test assesses your ability to hear and understand spoken words. It includes hearing tests to check for issues with sound perception and speech tests to evaluate your word recognition. It's a crucial step in identifying any hearing or speech problems.
201 services200 patients
Test to assess middle ear function 92567
A test to assess middle ear function, also known as an impedance audiometry, helps evaluate how well your middle ear works. It measures the movement of your eardrum in response to changes in air pressure. This can help identify issues like fluid build-up, ear infections, or eardrum perforations.
38 services37 patients
Test for hearing various pitches using earphone 92552
This is a hearing test where earphones are worn to detect different pitch levels. Sounds of various frequencies are played, and you indicate when you hear them. This helps evaluate your hearing ability. It's safe, comfortable, and non-invasive.
28 services22 patients
Test for ability to detect and repeat spoken words with speech recognition 92556
This is a hearing test where you'll listen to spoken words through headphones and repeat them. It helps evaluate your ability to understand speech. It's a simple, non-invasive procedure that provides valuable information about your hearing health.
17 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60540 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
$59.81 typical visit price
range $59.81 – $181.38
Typical copayment $14.95 (range $14.95 – $45.34)
Most-billed visit code 99202
Established Patient
$74.38 typical visit price
range $19.15 – $147.12
Typical copayment $18.59 (range $4.78 – $36.78)
Most-billed visit code 99213
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 3

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

DANNY JANDALI M.D.
Otolaryngology
808 RICKERT DR STE 200
NAPERVILLE, IL 60540
Dupage County (630) 355-8000
JESSICA ROKOSZ DUERINCK AUD
Audiologist
808 RICKERT DR STE 200
NAPERVILLE, IL 60540
Dupage County (630) 364-7410
DANIAL A JILANI MD, MPH
Radiology (Vascular & Interventional Radiology)
808 RICKERT DR STE 200
NAPERVILLE, IL 60540
Dupage County (630) 355-8000

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 Schlegel's NPI number?

The NPI number for Mary Schlegel is 1417989336. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is Mary Schlegel located?

Mary Schlegel practices at 808 Rickert Dr Ste 200, Naperville, IL 60540. The listed phone number is (630) 364-7410.

What is Mary Schlegel's specialty?

The primary specialty registered for this NPI is Audiologist with taxonomy code 231H00000X.

Is Mary Schlegel enrolled in Medicare?

Yes. Mary Schlegel 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.

Which organization bills Medicare for Mary Schlegel's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Schlegel reassigns Medicare benefits to Dupage Medical Group Ltd (Downers Grove, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Schlegel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Schlegel was last updated on July 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.