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Compare the published Medicare service mix of David Li Farrier, MD with clinicians in the same registry specialty: Internal Medicine.

OKLAHOMA CITY, OK · Exact areaEdit location

2024 published service data · 193 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Miles C Langmacher, MD

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
78%Service-mix similarityView profile →

Christopher William Beard, MD

Internal Medicine · Oklahoma City, OK

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Hospital discharge day management, more than 30 minutes (99239)
78%Service-mix similarityView profile →

Abhijit Kalale Ramesh

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
77%Service-mix similarityView profile →

William Pham, MD

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
75%Service-mix similarityView profile →

Yuan Zhang, M.D.

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
74%Service-mix similarityView profile →

Wesley Thomas, MD

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
74%Service-mix similarityView profile →

Heyyan Bin Khalil, MD

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
72%Service-mix similarityView profile →

Mark Warren Fogle, MD

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
72%Service-mix similarityView profile →

Gary D. Riggs, M.D.

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
70%Service-mix similarityView profile →

Muhammad Zeeshan Siddiqui, M.D.

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
69%Service-mix similarityView profile →

Sarosh Ahmed Khan, M.D.

Internal Medicine · Oklahoma City, OK

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
69%Service-mix similarityView profile →

Joanne Carol Skaggs, MD

Internal Medicine · Oklahoma City, OK

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Hospital discharge day management, more than 30 minutes (99239)
69%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.