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Compare the published Medicare service mix of Alison Joyce Tammany, M.D. with clinicians in the same registry specialty: General Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 123 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Shanglei Liu, M.D.

Colorectal Surgery (Proctology) · General Surgery (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
84%Service-mix similarityView profile →

Lorenc Malellari, MD

Colorectal Surgery (Proctology) (CMS) · Bakersfield, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
82%Service-mix similarityView profile →

Steven Derek Mills, MD

Colorectal Surgery (Proctology) (CMS) · Long Beach, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
82%Service-mix similarityView profile →

Dong Hum Yoon, MD

Colorectal Surgery (Proctology) (CMS) · Fullerton, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
81%Service-mix similarityView profile →

Christina Jenkins, MD

Colorectal Surgery (Proctology) · General Surgery (CMS) · Mission Viejo, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of anus using an endoscope (46600)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
80%Service-mix similarityView profile →

Erik Richard Noren, M.D.

Colorectal Surgery (Proctology) · General Surgery (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
80%Service-mix similarityView profile →

Jose Carlos Muniz Castro, M.D.

Colorectal Surgery (Proctology) · General Surgery (CMS) · Rancho Mirage, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
80%Service-mix similarityView profile →

Juliane Yael Cruz Golan, M.D.

Colorectal Surgery (Proctology) · General Surgery (CMS) · Pasadena, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of anus using an endoscope (46600)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
77%Service-mix similarityView profile →

Samuel G. Eisenstein, MD

Colorectal Surgery (Proctology) · General Surgery (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
77%Service-mix similarityView profile →

David Koller

Colorectal Surgery (Proctology) (CMS) · Torrance, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
73%Service-mix similarityView profile →

Valery Vilchez, M.D.

Colorectal Surgery (Proctology) (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Diagnostic exam of anus using an endoscope (46600)
73%Service-mix similarityView profile →

Bassem Ghobrial, M.D.

Colorectal Surgery (Proctology) (CMS) · French Camp, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
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.