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Compare the published Medicare service mix of Andrew C Chang, M.D. with clinicians in the same registry specialty: Gastroenterology (CMS).

LOMA LINDA, CA · Exact areaEdit location

2024 published service data · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Timothy Yen, M.D.

Gastroenterology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
82%Service-mix similarityView profile →

Kendrick Minyen Che, DO

Gastroenterology · Internal Medicine (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
65%Service-mix similarityView profile →

Matthew Jacob Oman, M.D.

Gastroenterology · Internal Medicine (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
65%Service-mix similarityView profile →

Mohammed Fahad Ali

Specialty details in registry · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
61%Service-mix similarityView profile →

Xin Zheng, D.O.

Gastroenterology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Biopsy of large bowel using a flexible endoscope (45380)
59%Service-mix similarityView profile →

Nour Parsa, M.D.

Gastroenterology · Internal Medicine (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
56%Service-mix similarityView profile →

Bing Zhang

Gastroenterology · Internal Medicine (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
50%Service-mix similarityView profile →

Wichit Srikureja, M.D.

Gastroenterology · Internal Medicine (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
49%Service-mix similarityView profile →

Khaled M Selim, M.D.

Gastroenterology (CMS) · Loma Linda, CA

Shared published services
2 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
31%Service-mix similarityView profile →

Keisha Leah Baldeosingh, MD

Gastroenterology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
31%Service-mix similarityView profile →

Erick Jordan Imbertson, M.D.

Gastroenterology · Internal Medicine (CMS) · Loma Linda, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
30%Service-mix similarityView profile →

Mina Oh Rakoski, M.D.

Gastroenterology (CMS) · Loma Linda, CA

Shared published services
2 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
24%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.