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Compare the published Medicare service mix of Nicholas Ketchum, M.D. with clinicians in the same registry specialty: Physical Medicine And Rehabilitation (CMS).

WI · Exact areaEdit location

2024 published service data · 156 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Christopher A Cronsell, MD

Physical Medicine And Rehabilitation (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)
  • Nerve conduction, 5-6 studies (95909)
79%Service-mix similarityView profile →

Bonnie J Weigert, MD

Physical Medicine And Rehabilitation (CMS) · Madison, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)
  • Nerve conduction, 7-8 studies (95910)
67%Service-mix similarityView profile →

Brian Allan Knapp, M.D.

Family Practice · Physical Medicine And Rehabilitation (CMS) · Green Bay, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)
  • Nerve conduction, 7-8 studies (95910)
67%Service-mix similarityView profile →

Eric Maitland Dvorak, M.D.

Physical Medicine And Rehabilitation (CMS) · Green Bay, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)
  • Nerve conduction, 7-8 studies (95910)
62%Service-mix similarityView profile →

John Anthony Roffers, MD

Specialty details in registry · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Nerve conduction, 5-6 studies (95909)
  • Nerve conduction, 9-10 studies (95911)
58%Service-mix similarityView profile →

Scott T Hardin, MD

Physical Medicine And Rehabilitation (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Nerve conduction, 7-8 studies (95910)
  • Nerve conduction, 5-6 studies (95909)
58%Service-mix similarityView profile →

Tara A Kersten, MD

Physical Medicine And Rehabilitation (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Nerve conduction, 7-8 studies (95910)
  • Nerve conduction, 5-6 studies (95909)
55%Service-mix similarityView profile →

Mac Roman Weninger, MD

Physical Medicine And Rehabilitation (CMS) · Appleton, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)
  • Nerve conduction, 7-8 studies (95910)
54%Service-mix similarityView profile →

Danzhu Guo, MD

Physical Medicine And Rehabilitation (CMS) · Green Bay, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Nerve conduction, 7-8 studies (95910)
  • Nerve conduction, 5-6 studies (95909)
50%Service-mix similarityView profile →

Marie A Walker, M.D.

Physical Medicine And Rehabilitation (CMS) · Green Bay, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Nerve conduction, 7-8 studies (95910)
  • Nerve conduction, 5-6 studies (95909)
49%Service-mix similarityView profile →

Karin Scheftner Goodfriend, MD

Physical Medicine And Rehabilitation (CMS) · Milwaukee, WI

Shared published services
2 shared services · view billing descriptions
  • Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)
  • Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity (64643)
47%Service-mix similarityView profile →

Benjamin Robert Siebert, M.D.

Physical Medicine And Rehabilitation (CMS) · Neenah, WI

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Nerve conduction, 7-8 studies (95910)
  • Nerve conduction, 9-10 studies (95911)
47%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.