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Compare the published Medicare service mix of David M Eggers, MD with clinicians in the same registry specialty: Neurosurgery (CMS).

IN · Exact areaEdit location

2024 published service data · 76 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Isa S Canavati, MD

Neurosurgery (CMS) · Fort Wayne, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
72%Service-mix similarityView profile →

James David Callahan, M.D.

Neurosurgery (CMS) · Anderson, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
70%Service-mix similarityView profile →

Christopher L Sneed, M.D.

Neurosurgery (CMS) · Evansville, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
70%Service-mix similarityView profile →

John Serak, M.D.

Neurosurgery (CMS) · New Albany, IN

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
68%Service-mix similarityView profile →

Daniel Gerard Spomar, M.D.

Neurosurgery (CMS) · Greenwood, IN

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
67%Service-mix similarityView profile →

Daniel L Kim, MD

Neurosurgery (CMS) · Carmel, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
66%Service-mix similarityView profile →

Garrett J Jackson, M.D.

Neurosurgery (CMS) · Fort Wayne, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
64%Service-mix similarityView profile →

Andrew Losiniecki, MD

Neurosurgery · Orthopedic Surgery (CMS) · South Bend, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
64%Service-mix similarityView profile →

Jason M Voorhies, M.D.

Neurosurgery (CMS) · Fort Wayne, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
61%Service-mix similarityView profile →

Karsten Fryburg, MD

Neurosurgery (CMS) · Greenwood, IN

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)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
61%Service-mix similarityView profile →

Shahjehan Ahmad, MD, MPH

Neurosurgery (CMS) · Carmel, IN

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
61%Service-mix similarityView profile →

Jill Wright Donaldson, MD

Neurosurgery (CMS) · Indianapolis, IN

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)
60%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.