Mary Schlegel, AU.D.
NPI 1417989336 · Audiologist · Naperville, IL
Enrolled with Medicare as Practitioner - Qualified Audiologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Schlegel, AU.D. is a Audiologist provider in Naperville, IL (NPI 1417989336).
Provider details
- NPI number
- 1417989336
- Entity type
- Individual
- Primary specialty
- AudiologistSpeech, Language and Hearing Service Providers
- Credential
- AU.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 147000816 (IL)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
284 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Comprehensive Hearing and Speech Recognition Test92557 | 201 | $37 |
| Test to Assess Middle Ear Function92567 | 38 | $17 |
| Test for Hearing Various Pitches Using Earphone92552 | 28 | $39 |
| Test for Ability to Detect and Repeat Spoken Words With Speech Recognition92556 | 17 | $46 |
Typical Medicare-allowed amounts for these services range $17–$46 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2023-07-25
- Certified
- 2023-07-25
Frequently asked questions
- What is Mary Schlegel's NPI number?
- Mary Schlegel's National Provider Identifier (NPI) is 1417989336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Schlegel's specialty?
- Mary Schlegel is listed in the NPPES registry with a primary specialty of Audiologist (Speech, Language and Hearing Service Providers).
- Where is Mary Schlegel located?
- Mary Schlegel's practice location on file with NPPES is 808 Rickert Dr Ste 200, Naperville, IL 60540-0910.
- What is Mary Schlegel's phone number?
- The practice phone number listed in the NPPES registry for Mary Schlegel is (630) 364-7410.
- Does Mary Schlegel accept Medicare?
- Mary Schlegel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Schlegel's NPI active?
- Yes — Mary Schlegel's NPI (1417989336) is active in the NPPES registry as of the last update on 2023-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.