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Compare the published Medicare service mix of David P Lee, M.D. M.P.H. with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

ORANGE, CA · Exact areaEdit location

2024 published service data · 32 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ousama Alkhatib, MD

Gastroenterology · Internal Medicine (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
77%Service-mix similarityView profile →

Jaehyun Kim, MD

Gastroenterology (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
69%Service-mix similarityView profile →

Shravani Reddy, M.D

Gastroenterology (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
69%Service-mix similarityView profile →

Christina Ling, M.D.

Gastroenterology (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
64%Service-mix similarityView profile →

Sandra Sunhee Park, MD

Gastroenterology · Internal Medicine (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
62%Service-mix similarityView profile →

George Holman, MD

Gastroenterology (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
59%Service-mix similarityView profile →

Robert Ian Maurice Fearn, MBCHB

Gastroenterology (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
58%Service-mix similarityView profile →

Piotr Szczepan Sowa, M.D.

Gastroenterology (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
55%Service-mix similarityView profile →

C Gregory Albers, MD

Gastroenterology · Internal Medicine (CMS) · Orange, 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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
52%Service-mix similarityView profile →

Hardeep M Singh, M.D.

Gastroenterology · Internal Medicine (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
46%Service-mix similarityView profile →

Haig Najarian, MD

Gastroenterology (CMS) · Orange, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
44%Service-mix similarityView profile →

Usman G Rahim, M.D.

Gastroenterology (CMS) · Orange, 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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
43%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.