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Compare the published Medicare service mix of Alan Zats, DO with clinicians in the same registry specialty: Anesthesiology · Pain Management (CMS).

BROOKLYN, NY · Exact areaEdit location

2024 published service data · 16 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Igor Ostrovsky, M.D

Pain Management (CMS) · Brooklyn, 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
72%Service-mix similarityView profile →

Jason Kreiner, M.D.

Anesthesiology · Pain Management (CMS) · Brooklyn, NY

Shared published services
3 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Aspiration and/or injection of fluid from large joint (20610)
57%Service-mix similarityView profile →

Joseph Kim, M.D.

Specialty details in registry · Brooklyn, 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
57%Service-mix similarityView profile →

Mehrdad Hedayatnia, MD

Anesthesiology · Pain Management (CMS) · Brooklyn, NY

Shared published services
3 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Aspiration and/or injection of fluid from large joint (20610)
56%Service-mix similarityView profile →

Mathew Lefkowitz, MD

Pain Management (CMS) · Brooklyn, NY

Shared published services
3 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
53%Service-mix similarityView profile →

Mark Galperin

Anesthesiology · Interventional Pain Management (CMS) · Brooklyn, NY

Shared published services
3 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)
  • Aspiration and/or injection of fluid from large joint (20610)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
51%Service-mix similarityView profile →

David Ian Rosenblum, MD

Anesthesiology · Pain Management (CMS) · Brooklyn, NY

Shared published services
3 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)
  • Aspiration and/or injection of fluid from large joint (20610)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
49%Service-mix similarityView profile →

Ryan T Gualtier, M.D.

Pain Management (CMS) · Brooklyn, NY

Shared published services
3 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)
  • Aspiration and/or injection of fluid from large joint (20610)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
48%Service-mix similarityView profile →

Una Sibirceva, MD

Hospice/Palliative Care · Internal Medicine · Pain Management (CMS) · Brooklyn, 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)
36%Service-mix similarityView profile →

Gary Scott Schwartz, M.D.

Anesthesiology · Pain Management (CMS) · Brooklyn, 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)
  • Injection of lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of lower or sacral spine facet joint using imaging guidance, second level (64494)
27%Service-mix similarityView profile →

Marivi Macatangay De Jesus, M.D.

Pain Management (CMS) · Brooklyn, 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)
26%Service-mix similarityView profile →

Jonathan Martin Hirsch, MD

Anesthesiology · Pain Management (CMS) · Brooklyn, NY

Shared published services
2 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
22%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.