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Compare the published Medicare service mix of Christina Ashley Dreffein, AU.D. with clinicians in the same registry specialty: Qualified Audiologist (CMS).

IL · Exact areaEdit location

2024 published service data · 273 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Steven Edward Wieska, M.,S.

Qualified Audiologist (CMS) · Schaumburg, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
94%Service-mix similarityView profile →

Elizabeth Ann Bush, AUD

Qualified Audiologist (CMS) · Herrin, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
94%Service-mix similarityView profile →

Tina L Williams, AUD

Qualified Audiologist (CMS) · Aurora, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
94%Service-mix similarityView profile →

Erin Marie Whalen, AU.D.

Qualified Audiologist (CMS) · Quincy, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
94%Service-mix similarityView profile →

Lauren E Bentley, AUD

Specialty details in registry · Aurora, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
94%Service-mix similarityView profile →

Michelle Nebel, AU.D.

Qualified Audiologist (CMS) · Lake Forest, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
93%Service-mix similarityView profile →

Brianna Maureen Schmitt, AUD.

Qualified Audiologist (CMS) · Swansea, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
93%Service-mix similarityView profile →

Stacy Lambin, M.A. CCC-A

Qualified Audiologist (CMS) · Bolingbrook, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
89%Service-mix similarityView profile →

Hana Chantel Hueser, AUD

Qualified Audiologist (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
89%Service-mix similarityView profile →

Susan Rickels Harris, AU.D., CCC-A

Qualified Audiologist (CMS) · Park Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
89%Service-mix similarityView profile →

Lauren Olivia Kelly, AUD

Qualified Audiologist (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
89%Service-mix similarityView profile →

Beth Ann Wallace, M.S.

Qualified Audiologist (CMS) · Peru, IL

Shared published services
3 shared services · view billing descriptions
  • Test to assess middle ear function (92567)
  • Comprehensive hearing and speech recognition test (92557)
  • Test for hearing various pitches using earphone (92552)
88%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.