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Similar work.
More providers to explore.

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

LITCHFIELD PARK, AZ · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 20 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brian W Millhollon, MD

Allergy/Immunology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
89%Service-mix similarity~24.1 milesView profile →

Bartlomiej Tomasz Leyko, MD

Allergy/Immunology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
89%Service-mix similarity~19.1 milesView profile →

Christopher E. Couch, M.D.

Allergy/Immunology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
89%Service-mix similarity~19.1 milesView profile →

Rahul S Rishi, D.O.

Allergy/Immunology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
88%Service-mix similarity~20.2 milesView profile →

Praveena R Kothur, M.D.

Allergy/Immunology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
86%Service-mix similarity~15.7 milesView profile →

Michael Carl Saavedra, MD

Allergy/Immunology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
85%Service-mix similarity~24.8 milesView profile →

Ronald K Jorgensen, MD

Allergy/Immunology · Internal Medicine (CMS) · Peoria, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
82%Service-mix similarity~12.7 milesView profile →

Kevin M Boesel, MD

Allergy/Immunology · Pediatric Medicine (CMS) · Peoria, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
82%Service-mix similarity~12.7 milesView profile →

Claudia Lucia Gaefke, MD

Allergy/Immunology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
82%Service-mix similarity~19.1 milesView profile →

Housam Alasaly, M.D.

Allergy/Immunology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
81%Service-mix similarity~24.5 milesView profile →

Ryan Matthew Casper, MD

Allergy/Immunology · Pediatric Medicine (CMS) · Peoria, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
81%Service-mix similarity~12.7 milesView profile →

Mark Everett Rose, MD

Allergy/Immunology · Internal Medicine (CMS) · Peoria, AZ

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for preparation and provision of 1 or more antigens (95165)
  • Professional service for multiple injections of allergen (95117)
80%Service-mix similarity~12.7 milesView 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 approximate distance 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.