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Compare the published Medicare service mix of Constantinos George Hadjipanayis, M.D., PH.D. with clinicians in the same registry specialty: Neurosurgery (CMS).

PITTSBURGH, PA · Exact areaEdit location

2024 published service data · 33 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Kalil G Abdullah

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Computer-assisted radiosurgery of simple growth of brain, each additional growth (61797)
  • Computer-assisted radiosurgery of simple growth of brain, first growth (61796)
62%Service-mix similarityView profile →

Pascal Olivier Zinn, M.D., PH.D.

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Computer-assisted procedure inside brain (61781)
  • 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 →

James Cushing Bayley, MD

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
45%Service-mix similarityView profile →

Georgios Zenonos

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Computer-assisted radiosurgery application of headframe (61800)
  • Computer-assisted procedure inside brain (61781)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
45%Service-mix similarityView profile →

Christopher P Deibert, M.D.

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Computer-assisted radiosurgery of simple growth of brain, first growth (61796)
  • Computer-assisted radiosurgery application of headframe (61800)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
39%Service-mix similarityView profile →

Paul Gardner

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Computer-assisted procedure inside brain (61781)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
24%Service-mix similarityView profile →

David H Jho, MD

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
22%Service-mix similarityView profile →

Jody Leonardo, MD

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
21%Service-mix similarityView profile →

David O Okonkwo, M.D.

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
18%Service-mix similarityView profile →

Katherine Michelle Berry, MD

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
17%Service-mix similarityView profile →

Alexander K Yu, MD

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Computer-assisted radiosurgery of simple growth of brain, first growth (61796)
  • Use of operating microscope (69990)
13%Service-mix similarityView profile →

Benjamin Bernard Whiting, MD

Neurosurgery (CMS) · Pittsburgh, PA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
11%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.