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 Ara Sahakian, M.D. with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 102 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

James Leonard Buxbaum, M.D.

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
89%Service-mix similarityView profile →

Stephen Kim, MD

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
69%Service-mix similarityView profile →

Venkataraman Raman Muthusamy, MD

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
62%Service-mix similarityView profile →

Jacques Van Dam, M.D., PH.D.

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
60%Service-mix similarityView profile →

Derek Cheng, MD

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
60%Service-mix similarityView profile →

Adnan Ameer, M.D.

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
59%Service-mix similarityView profile →

Alexander H Kim, D.O.

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
58%Service-mix similarityView profile →

Simon K Lo, M.D.

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope through mouth (43237)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
58%Service-mix similarityView profile →

Florence-Damilola Odufalu, M.D.

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
57%Service-mix similarityView profile →

David Miguel Padua, M.D.

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
57%Service-mix similarityView profile →

Jeremy Ryan Herman, MD

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
57%Service-mix similarityView profile →

Brent Hiramoto, MD, MPH

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
57%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.