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Compare the published Medicare service mix of Jennifer Ann Regan, M.D., PH.D with clinicians in the same registry specialty: Allergy/Immunology (CMS).

WA · Exact areaEdit location

2024 published service data · 42 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Bani Preet Kaur, M.D.

Allergy/Immunology (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
92%Service-mix similarityView profile →

Daniel Groth

Allergy/Immunology (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
90%Service-mix similarityView profile →

William Toan Nguyen, M.D.

Allergy/Immunology (CMS) · Redmond, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
89%Service-mix similarityView profile →

Trever M Burnett, M.D.

Allergy/Immunology · Pediatric Medicine (CMS) · Yakima, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
83%Service-mix similarityView profile →

Sara Seghezzo, M.D.

Allergy/Immunology (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
83%Service-mix similarityView profile →

Matthew Perez, MD

Allergy/Immunology (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
81%Service-mix similarityView profile →

Lisa Christine Winterroth, M.D.

Allergy/Immunology · Pediatric Medicine (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
80%Service-mix similarityView profile →

Steven M Kernerman, D.O.

Allergy/Immunology (CMS) · Spokane, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
75%Service-mix similarityView profile →

Vivek Agarwal, M.D.

Allergy/Immunology (CMS) · Silverdale, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
75%Service-mix similarityView profile →

John William Knutson, MD

Allergy/Immunology (CMS) · Bellevue, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
74%Service-mix similarityView profile →

Kristi Kay Mckinney, M.D.

Allergy/Immunology · Pediatric Medicine (CMS) · Lakewood, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
73%Service-mix similarityView profile →

Taiil Ted Song, D.O.

Allergy/Immunology (CMS) · Lakewood, WA

Shared published services
3 shared services · view billing descriptions
  • Test for allergy using allergenic extract (95004)
  • Professional service for multiple injections of allergen (95117)
  • Professional service for single injection of allergen (95115)
72%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.