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 William Charles Welch, MD with clinicians in the same registry specialty: Neurosurgery (CMS).

PHILADELPHIA, PA · Exact areaEdit location

2024 published service data · 61 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Neil R Malhotra, MD

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
78%Service-mix similarityView profile →

Zarina Sultana Ali, MD

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
73%Service-mix similarityView profile →

Pulak Ray, M.D.

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
66%Service-mix similarityView profile →

Alikemal Kemal Ozturk, MD

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Fusion of additional segment of spine (22614)
63%Service-mix similarityView profile →

Joshua E. Heller, M.D.

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
60%Service-mix similarityView profile →

Srinivas Kasinadhuni Prasad, M.D.

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Fusion of additional segment of spine (22614)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
57%Service-mix similarityView profile →

John Hong Shin, MD

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Fusion of additional segment of spine (22614)
55%Service-mix similarityView profile →

James S. Harrop, M.D.

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Fusion of additional segment of spine (22614)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
50%Service-mix similarityView profile →

Paul J Marcotte, MD

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Fusion of additional segment of spine (22614)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
49%Service-mix similarityView profile →

James M Schuster, MD

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Fusion of additional segment of spine (22614)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
46%Service-mix similarityView profile →

Jack I Jallo, MD

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
  • Placement of stabilizing device to back, 3-6 spine bone segments (22842)
46%Service-mix similarityView profile →

Sonia G Geschwindt, M.D.

Neurosurgery (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • Fusion of additional segment of spine (22614)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
45%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.