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Compare the published Medicare service mix of Patrick F Doherty, M.D. with clinicians in the same registry specialty: Neurosurgery (CMS).

NEW LONDON, CT · 50 milesEdit location
Within 50 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 63 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Patrick R Tomak, MD

Neurosurgery (CMS) · New Haven, CT

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)
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
64%Service-mix similarity~42.9 milesView profile →

Theresa Lynn Williamson, MD

Neurosurgery (CMS) · Providence, RI

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)
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
56%Service-mix similarity~48.2 milesView profile →

Sohail Syed, M.D.

Neurosurgery (CMS) · Providence, RI

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)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Fusion of additional segment of spine (22614)
54%Service-mix similarity~48.2 milesView profile →

Ziya Levent Gokaslan, M.D.

Neurosurgery (CMS) · Providence, RI

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)
  • 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)
49%Service-mix similarity~48.2 milesView profile →

Phillip S. Dickey, M.D

Neurosurgery (CMS) · Guilford, CT

Shared published services
2 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)
48%Service-mix similarity~30.7 milesView profile →

David Spiro, D.O.

Neurosurgery (CMS) · Hartford, CT

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)
  • 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)
47%Service-mix similarity~42.2 milesView profile →

Tianyi Niu, M.D.

Neurosurgery (CMS) · Providence, RI

Shared published services
2 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)
  • Fusion of additional segment of spine (22614)
45%Service-mix similarity~48.2 milesView profile →

Joel A. Bauman, MD

Neurosurgery (CMS) · Hartford, CT

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)
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)
43%Service-mix similarity~41.1 milesView profile →

Petra Margarete Klinge, MD

Neurosurgery (CMS) · Providence, RI

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)
  • 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)
41%Service-mix similarity~48.2 milesView profile →

Michael Louis Diluna, M.D.

Neurosurgery (CMS) · New Haven, CT

Shared published services
1 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)
41%Service-mix similarity~42.7 milesView profile →

Konstantina Svokos, DO, MSC.

Neurosurgery (CMS) · Providence, RI

Shared published services
1 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)
41%Service-mix similarity~48.2 milesView profile →

Oluwaseun Akinduro, MD

Neurosurgery (CMS) · Providence, RI

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)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Placement of stabilizing device to back, 3-6 spine bone segments (22842)
39%Service-mix similarity~48.2 milesView 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 approximate distance 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.