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Compare the published Medicare service mix of George C Angelos, M.D. with clinicians in the same registry specialty: Colorectal Surgery (Proctology) · 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.

Marjun Philip Narciso Duldulao, M.D.

Colorectal Surgery (Proctology) · General Surgery (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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
60%Service-mix similarityView profile →

John Anthony Griffin, M.D.

Surgical Oncology (CMS) · Loma Linda, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
60%Service-mix similarityView profile →

Ivy Hernandez Gardner, MD

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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
59%Service-mix similarityView profile →

Christine Hsieh, M.D.

Colorectal Surgery (Proctology) (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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
58%Service-mix similarityView profile →

Burzeen Eruch Karanjawala, M.D.

Colorectal Surgery (Proctology) (CMS) · Sacramento, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
58%Service-mix similarityView profile →

Carlos Amir Esparza Monzavi

Colorectal Surgery (Proctology) · Hand Surgery (CMS) · Irvine, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
58%Service-mix similarityView profile →

Ching-Fong Wu, DO

Gastroenterology (CMS) · Visalia, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Biopsy of large bowel using a flexible endoscope (45380)
57%Service-mix similarityView profile →

Kristina G Hobson, M.D.

Colorectal Surgery (Proctology) · General 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
56%Service-mix similarityView profile →

Lisa Park

Colorectal Surgery (Proctology) (CMS) · Larkspur, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
56%Service-mix similarityView profile →

Mathew S Isho, MD

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

Shared published services
3 shared services · view billing descriptions
  • Telephone medical discussion with physician, 5-10 minutes (99441)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
55%Service-mix similarityView profile →

Jennifer Jeanne Mcneil, M.D.

Colorectal Surgery (Proctology) (CMS) · Stockton, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
55%Service-mix similarityView profile →

Kyle Ota, M.D., MPH

Colorectal Surgery (Proctology) · General Surgery (CMS) · Visalia, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Diagnostic exam of anus using an endoscope (46600)
55%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.