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Compare the published Medicare service mix of Fen Liang, M.D. with clinicians in the same registry specialty: Internal Medicine.

SANTA BARBARA, CA · Exact areaEdit location

2024 published service data · 73 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Matthew Steven Payne, M.D.

Internal Medicine · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)
  • Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes (97112)
  • Test or measurement for functional capacity, each 15 minutes (97750)
96%Service-mix similarityView profile →

Paul S. Aijian, M.D.

Internal Medicine · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Advance care planning, first 30 minutes (99497)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
52%Service-mix similarityView profile →

Anita Rai, M.D.

Internal Medicine · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
50%Service-mix similarityView profile →

Jon Uyesaka, MD

Internal Medicine · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
47%Service-mix similarityView profile →

Alexander E Morf, M.D.

Internal Medicine · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Advance care planning, first 30 minutes (99497)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
47%Service-mix similarityView profile →

Douglas E Cummings, M.D.

Internal Medicine · Santa Barbara, 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)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
45%Service-mix similarityView profile →

Marta Sovilj, M.D.

Internal Medicine · Santa Barbara, 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)
  • Telephone medical discussion with physician, 21-30 minutes (99443)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
44%Service-mix similarityView profile →

John Sim, M.D.

Internal Medicine · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
44%Service-mix similarityView profile →

Roxana Ardebili Ledig, M.D.

Internal Medicine · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
43%Service-mix similarityView profile →

Marie Claire Lamb, M.D.

Internal Medicine · Santa Barbara, 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)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
43%Service-mix similarityView profile →

William M Meller, M.D.

Internal Medicine · Santa Barbara, 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)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
43%Service-mix similarityView profile →

David Birken, MD

Internal Medicine · Santa Barbara, 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)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Annual depression screening, 5 to 15 minutes (G0444)
42%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.