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Compare the published Medicare service mix of Marissa Mae Gilger, AUD with clinicians in the same registry specialty: Qualified Audiologist (CMS).

VALLEJO, CA · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 9 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Raymond Garr Crookston, AU.D.

Qualified Audiologist (CMS) · Oakland, CA

Shared published services
2 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
  • Test to assess middle ear function (92567)
100%Service-mix similarity~20.9 milesView profile →

Mark Joseph Sanford, MS, CCC-A

Qualified Audiologist (CMS) · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
  • Test to assess middle ear function (92567)
100%Service-mix similarity~19.3 milesView profile →

Samuel Timothy Johnson, AU.D.

Qualified Audiologist (CMS) · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
  • Test to assess middle ear function (92567)
100%Service-mix similarity~18.0 milesView profile →

Susanna Storm, AU.D

Qualified Audiologist (CMS) · Berkeley, CA

Shared published services
2 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
  • Test to assess middle ear function (92567)
83%Service-mix similarity~17.8 milesView profile →

Valerie Ann Fitzgibbons, MA CCCA

Specialty details in registry · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
  • Test to assess middle ear function (92567)
80%Service-mix similarity~18.3 milesView profile →

Leigh Fulford Kjeldsen, AUD

Qualified Audiologist (CMS) · Concord, CA

Shared published services
2 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
  • Test to assess middle ear function (92567)
74%Service-mix similarity~14.9 milesView profile →

Brian Michael Duguay, AUD

Qualified Audiologist (CMS) · Napa, CA

Shared published services
2 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
  • Test to assess middle ear function (92567)
69%Service-mix similarity~23.5 milesView profile →

Meghann Jean Keehner, AUD

Qualified Audiologist (CMS) · Vacaville, CA

Shared published services
1 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
55%Service-mix similarity~23.5 milesView profile →

Lee Weissman, AU.D.

Qualified Audiologist (CMS) · Novato, CA

Shared published services
1 shared services · view billing descriptions
  • Comprehensive hearing and speech recognition test (92557)
43%Service-mix similarity~17.3 milesView 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 approximate distance 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.