HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Nina Zachariah, MD with clinicians in the same registry specialty: Anesthesiology.

WESTWOOD, MA · Exact areaEdit location

2024 published service data · 70 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

John Khozozian, MD

Anesthesiology · Westwood, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure or exam of knee joint using an endoscope (01400)
81%Service-mix similarityView profile →

Martha Zegarra, MD

Anesthesiology · Westwood, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure or exam of knee joint using an endoscope (01400)
73%Service-mix similarityView profile →

Alexandra B Gordon, MD

Anesthesiology · Westwood, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
48%Service-mix similarityView profile →

Anna Letha Kurian, MD

Anesthesiology · Westwood, MA

Shared published services
1 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
48%Service-mix similarityView profile →

Michelle Barbara Nyman, M.D.

Anesthesiology · Westwood, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
47%Service-mix similarityView profile →

Kamillus Wohlfeld, MD

Anesthesiology · Westwood, MA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
46%Service-mix similarityView profile →

Mohammed Hassan, MD

Anesthesiology · Westwood, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure or exam of knee joint using an endoscope (01400)
46%Service-mix similarityView profile →

Mark Patrick, MD

Anesthesiology · Westwood, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
44%Service-mix similarityView profile →

Vijayendra H Sudheendra, MD

Anesthesiology · Westwood, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure or exam of knee joint using an endoscope (01400)
39%Service-mix similarityView profile →

Peilin Kim, MD

Anesthesiology · Westwood, MA

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
39%Service-mix similarityView profile →

David B Rosenberg, MD

Anesthesiology · Westwood, MA

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
36%Service-mix similarityView profile →

Mohammad Hadi Esteghamati, MD

Anesthesiology · Westwood, MA

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
35%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.