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Compare the published Medicare service mix of Hasan Aqdas Zaidi, M.D. with clinicians in the same registry specialty: Neurosurgery (CMS).

BOSTON, MA · Exact areaEdit location

2024 published service data · 66 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Dustin James Donnelly, MD, PHD

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • 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)
80%Service-mix similarityView profile →

John H Chi, MD

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • 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)
70%Service-mix similarityView profile →

Ganesh M Shankar, MD, PHD

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Telephone medical discussion with physician, 21-30 minutes (99443)
65%Service-mix similarityView profile →

Hiren N Patel, D.O.

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Telephone medical discussion with physician, 21-30 minutes (99443)
59%Service-mix similarityView profile →

Muhammad M Abd-El-Barr, M.D., PH.D.

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Telephone medical discussion with physician, 21-30 minutes (99443)
58%Service-mix similarityView profile →

Yi Lu, M.D., PH.D.

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Computer-assisted spinal procedure (61783)
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
55%Service-mix similarityView profile →

Michael Mooney, MD

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • 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)
55%Service-mix similarityView profile →

James Kryzanski, MD

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • 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)
53%Service-mix similarityView profile →

Jason Pierce Rahal, M.D.

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Computer-assisted spinal procedure (61783)
53%Service-mix similarityView profile →

Efstathios Papavassiliou, M.D.

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
52%Service-mix similarityView profile →

Ron I Riesenburger, MD

Neurosurgery (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
50%Service-mix similarityView profile →

Jean Valery Charles Emile Coumans, MD

Neurosurgery (CMS) · Boston, MA

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)
  • Telephone medical discussion with physician, 21-30 minutes (99443)
  • Computer-assisted spinal procedure (61783)
46%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.