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Compare the published Medicare service mix of Kathleen Tajiri, MD with clinicians in the same registry specialty: Allergy/Immunology · Internal Medicine · Pediatric Medicine (CMS).

CA · Exact areaEdit location

2024 published service data · 201 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Vinay Mehta, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure the level of nitric oxide gas (95012)
94%Service-mix similarityView profile →

Raymond H Hong, M.D.

Allergy/Immunology · Internal Medicine (CMS) · Dublin, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
86%Service-mix similarityView profile →

Yan Yan, M.D.

Allergy/Immunology · Pediatric Medicine (CMS) · Burlingame, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
84%Service-mix similarityView profile →

Kristen M. Walters, MD

Allergy/Immunology (CMS) · Aliso Viejo, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure the level of nitric oxide gas (95012)
84%Service-mix similarityView profile →

Ziwei Wang

Allergy/Immunology · Internal Medicine (CMS) · Santa Monica, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
83%Service-mix similarityView profile →

Myngoc Thi Nguyen, MD

Allergy/Immunology (CMS) · Berkeley, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure the level of nitric oxide gas (95012)
80%Service-mix similarityView profile →

Jenny Jeeyae Lee, M.D.

Allergy/Immunology · Internal Medicine (CMS) · Irvine, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
79%Service-mix similarityView profile →

Vivian T Aranez, M.D.

Allergy/Immunology (CMS) · Huntington Beach, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
78%Service-mix similarityView profile →

Hae Young Aaron Song, MD

Allergy/Immunology · Internal Medicine (CMS) · Yorba Linda, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
78%Service-mix similarityView profile →

Toral Anil Kamdar, M.D.

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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure the level of nitric oxide gas (95012)
77%Service-mix similarityView profile →

Michelle Fox Huffaker, MD

Allergy/Immunology · Internal Medicine (CMS) · Stanford, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure the level of nitric oxide gas (95012)
76%Service-mix similarityView profile →

Ilisten Marie Jones, M.D., M.P.H.

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 moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to measure the level of nitric oxide gas (95012)
76%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.