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Compare the published Medicare service mix of Joshua Michael Ian Davidson, M.D., M.P.H. with clinicians in the same registry specialty: Allergy/Immunology · 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.

Meghan Farrell Garcia, M.D.

Allergy/Immunology (CMS) · Sacramento, CA

Shared published services
2 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
  • Professional service for preparation and provision of single-dose vial of allergen (95144)
47%Service-mix similarityView profile →

Teresa A Neeno, MD

Allergy/Immunology (CMS) · Sacramento, CA

Shared published services
2 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
  • Professional service for preparation and provision of single-dose vial of allergen (95144)
47%Service-mix similarityView profile →

Eugene Wayne Tsai, MD

Allergy/Immunology (CMS) · Artesia, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
47%Service-mix similarityView profile →

Sonal Ramesh Patel, MD

Allergy/Immunology · Pediatric Medicine (CMS) · Pasadena, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
46%Service-mix similarityView profile →

Tonny Tanus, MD

Allergy/Immunology · Internal Medicine (CMS) · Bakersfield, CA

Shared published services
2 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
  • Professional service for preparation and provision of single-dose vial of allergen (95144)
46%Service-mix similarityView profile →

Maheshkumar Vyas, M.D.

Allergy/Immunology · Family Practice (CMS) · Anaheim, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
46%Service-mix similarityView profile →

Allan David Singer, M.D.

Allergy/Immunology (CMS) · Torrance, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
46%Service-mix similarityView profile →

Mona M Liu, MD

Allergy/Immunology (CMS) · San Jose, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
42%Service-mix similarityView profile →

Rajashri S Iyengar, M.D.

Allergy/Immunology (CMS) · San Carlos, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
40%Service-mix similarityView profile →

David John Waldman, M.D.

Allergy/Immunology (CMS) · Rancho Mirage, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
40%Service-mix similarityView profile →

Preeti Chopra, M.D.

Allergy/Immunology · Internal Medicine (CMS) · Oxnard, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
39%Service-mix similarityView profile →

Cindy Mai Nguyen, D.O.

Allergy/Immunology (CMS) · Mountain View, CA

Shared published services
1 shared services · view billing descriptions
  • Professional service for multiple injections of allergen (95117)
38%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.