A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Robert Douglas Walkup, MD with clinicians in the same registry specialty: Emergency Medicine.

SHALLOWATER, TX · 10 milesEdit location
Within 10 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 · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Daniel W Berman, M.D.

Emergency Medicine · Lubbock, TX

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with low level of medical decision making (99283)
100%Service-mix similarity~8.8 milesView profile →

Justin Tidwell, M.D.

Emergency Medicine · Lubbock, TX

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with low level of medical decision making (99283)
100%Service-mix similarity~8.8 milesView profile →

Sterling Evan Overstreet, M.D.

Emergency Medicine · Lubbock, TX

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
84%Service-mix similarity~8.8 milesView profile →

Christopher Paul Piel, M.D.

Emergency Medicine · Lubbock, TX

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with low level of medical decision making (99283)
82%Service-mix similarity~8.8 milesView profile →

Nicholas Quigley, DO

Emergency Medicine · Lubbock, TX

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with low level of medical decision making (99283)
78%Service-mix similarity~8.8 milesView profile →

Derek Smith, M.D.

Emergency Medicine · Lubbock, TX

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with low level of medical decision making (99283)
76%Service-mix similarity~8.8 milesView profile →

Conrad Bryson Bowman, M.D.

Emergency Medicine · Lubbock, TX

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with low level of medical decision making (99283)
75%Service-mix similarity~8.8 milesView profile →

Gayane Chalyan, D.O.

Emergency Medicine · Lubbock, TX

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
73%Service-mix similarity~7.4 milesView profile →

Alec Espeland

Emergency Medicine · Lubbock, TX

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
73%Service-mix similarity~8.8 milesView profile →

Steven Cameran Mecham, DO

Emergency Medicine · Lubbock, TX

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
70%Service-mix similarity~8.8 milesView profile →

Heather Dawn Torrez, M.D.

Emergency Medicine · Lubbock, TX

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
70%Service-mix similarity~8.8 milesView profile →

Lillian Amezquita

Emergency Medicine · Lubbock, TX

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
62%Service-mix similarity~8.8 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.