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Compare the published Medicare service mix of Kenneth W. Lien, MD with clinicians in the same registry specialty: Allergy/Immunology (CMS).

CA · Exact areaEdit location

2024 published service data · 58 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Marine Demirjian, M.D.

Allergy/Immunology (CMS) · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test for allergy using skin patch (95044)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
79%Service-mix similarityView profile →

Kelsey Ige, MD

Allergy/Immunology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Test to measure expiratory airflow and volume (94010)
71%Service-mix similarityView profile →

Mark Steven Sugar, M.D.

Allergy/Immunology (CMS) · Laguna Niguel, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Test to measure expiratory airflow and volume (94010)
70%Service-mix similarityView profile →

Whitney M Rassbach, MD

Allergy/Immunology (CMS) · Monterey, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test for allergy using skin patch (95044)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
69%Service-mix similarityView profile →

Vincent Tubiolo, MD

Allergy/Immunology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test for allergy using skin patch (95044)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
67%Service-mix similarityView profile →

Roger Linh Nguyen, M.D

Allergy/Immunology · Internal Medicine (CMS) · Garden Grove, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
66%Service-mix similarityView profile →

Tania Aung, M.D.

Allergy/Immunology (CMS) · Vacaville, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test for allergy using skin patch (95044)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
66%Service-mix similarityView profile →

Michael T Mosher, M.D.

Allergy/Immunology (CMS) · Thousand Oaks, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test for allergy using skin patch (95044)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
65%Service-mix similarityView profile →

Christine Young Lee-Kim, D.O.

Allergy/Immunology · Internal Medicine (CMS) · Laguna Niguel, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Test to measure expiratory airflow and volume (94010)
64%Service-mix similarityView profile →

Stephen Curtis Wong, M.D.

Allergy/Immunology · Internal Medicine (CMS) · Hacienda Heights, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Test for allergy using skin patch (95044)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
63%Service-mix similarityView profile →

Ricardo Antonio Tan, MD

Allergy/Immunology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Test to measure expiratory airflow and volume (94010)
63%Service-mix similarityView profile →

Syeda Rubina Inamdar, MD

Allergy/Immunology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Test to measure expiratory airflow and volume (94010)
62%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.