HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Robert Michael Markus, MD with clinicians in the same registry specialty: Surgery.

AUSTIN, TX · Exact areaEdit location

2024 published service data · 72 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Peter Vincent Ching, MD

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • Repair of wound by transferring skin, each additional 30.0 sq cm (14302)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Repair of wound by transferring skin, 30.1-60.0 sq cm (14301)
67%Service-mix similarityView profile →

Zachary Lynn Crislip, MD

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
67%Service-mix similarityView profile →

Brant Edward Victor, M.D.

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
67%Service-mix similarityView profile →

Mark Glover, M.D.

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
63%Service-mix similarityView profile →

Lauren Gayle Ash, M.D.

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Repair of groin hernia using an endoscope (49650)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
62%Service-mix similarityView profile →

Jose Alberto Lopez, M.D.

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
61%Service-mix similarityView profile →

Rodney Brian Ashworth, MD

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
54%Service-mix similarityView profile →

Erik Greg Lough, M.D.

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
52%Service-mix similarityView profile →

Robert Edward Askew, M.D.

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
52%Service-mix similarityView profile →

James Ralph Korndorffer, MD

Surgery · Austin, TX

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
49%Service-mix similarityView profile →

Semyon Gambarin, MD

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
49%Service-mix similarityView profile →

Steven M Fass, M.D.

Surgery · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
49%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.