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Compare the published Medicare service mix of Semon Bader, M.D. with clinicians in the same registry specialty: Orthopedic Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 263 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael Gary Michlitsch, M.D.

Orthopedic Surgery (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
88%Service-mix similarityView profile →

Charles Francis Preston, M.D.

Orthopedic Surgery · Sports Medicine (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
82%Service-mix similarityView profile →

Erik Scott Stark, MD

Orthopedic Surgery (CMS) · Oceanside, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
81%Service-mix similarityView profile →

Kentaro Pressly Suzuki, M.D.

Orthopedic Surgery · Sports Medicine (CMS) · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
80%Service-mix similarityView profile →

Jeffrey A Orr, MD

Orthopedic Surgery (CMS) · South Lake Tahoe, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
75%Service-mix similarityView profile →

Nathaniel P Cohen, M.D.

Orthopedic Surgery (CMS) · Los Gatos, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
75%Service-mix similarityView profile →

Daniel K. Davis, MD

Orthopedic Surgery · Sports Medicine (CMS) · Simi Valley, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
75%Service-mix similarityView profile →

Tal David, M.D.

Orthopedic Surgery · Sports Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
75%Service-mix similarityView profile →

Lucas Raymond King

Orthopedic Surgery (CMS) · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
73%Service-mix similarityView profile →

Jonathan Gelber, M.D.

Orthopedic Surgery (CMS) · Toluca Lake, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
73%Service-mix similarityView profile →

Ekaterina Urch, M.D.

Orthopedic Surgery · Sports Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
72%Service-mix similarityView profile →

Gregory Thomas Heinen, MD

Orthopedic Surgery · Sports Medicine (CMS) · Arcadia, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • X-ray of knee, 4 or more views (73564)
  • Aspiration and/or injection of fluid from large joint (20610)
72%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.