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Compare the published Medicare service mix of Warren Wenjsair Hsu, D.O. with clinicians in the same registry specialty: Allergy/Immunology · Internal Medicine (CMS).

NY · Exact areaEdit location

2024 published service data · 47 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Craig S Osleeb, MD

Allergy/Immunology (CMS) · Mount Kisco, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
41%Service-mix similarityView profile →

Audrey Michelle Weissman, M.D.

Allergy/Immunology · Internal Medicine (CMS) · Elmhurst, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
39%Service-mix similarityView profile →

Allison Ramsey, MD

Allergy/Immunology (CMS) · Rochester, NY

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
39%Service-mix similarityView profile →

Vahid Rahimian, DO

Allergy/Immunology (CMS) · New York, NY

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
38%Service-mix similarityView profile →

Paula Anne Brown, M.D.

Allergy/Immunology (CMS) · Fishkill, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
36%Service-mix similarityView profile →

David Resnick

Allergy/Immunology (CMS) · West Nyack, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
35%Service-mix similarityView profile →

Rachel Lena Miller, M.D.

Allergy/Immunology · Internal Medicine · Pulmonary Disease (CMS) · New York, NY

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
34%Service-mix similarityView profile →

Thomas Flaim, MD

Specialty details in registry · Albany, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Evaluation of use of breathing device (94664)
34%Service-mix similarityView profile →

Scott Osur, MD

Allergy/Immunology · Pediatric Medicine (CMS) · Albany, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Evaluation of use of breathing device (94664)
33%Service-mix similarityView profile →

Mariana Marcu

Allergy/Immunology (CMS) · New York, NY

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
33%Service-mix similarityView profile →

Robert T Goldman, MD

Allergy/Immunology · Pediatric Medicine (CMS) · Ossining, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
32%Service-mix similarityView profile →

Sumeet Sandhu

Allergy/Immunology · Pediatric Medicine (CMS) · Garden City, NY

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
31%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.