Erica Hill, D.O.
Optometrist · Dracut, MA
Shared published services3 shared services · view billing descriptions
97%Service-mix similarity~8.9 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Kara Beth Feldberg, O.D. with clinicians in the same registry specialty: Optometrist.
WINDHAM, NH · 10 milesEdit location
Within 10 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 · 32 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Beth H Kohn, O.D.
Optometrist · Salem, NH
Shared published services3 shared services · view billing descriptions
84%Service-mix similarity~4.7 milesView profile →
Kimberly Wong
Optometrist · Londonderry, NH
Shared published services3 shared services · view billing descriptions
80%Service-mix similarity~5.5 milesView profile →
Wensheng Winston Yao, O.D.
Optometrist · Lawrence, MA
Shared published services3 shared services · view billing descriptions
75%Service-mix similarity~9.9 milesView profile →
Yue Fu
Optometrist · Londonderry, NH
Shared published services3 shared services · view billing descriptions
73%Service-mix similarity~5.7 milesView profile →
Keith Alan Emery, OD
Optometrist · Derry, NH
Shared published services3 shared services · view billing descriptions
71%Service-mix similarity~5.7 milesView profile →
Diane J Nelson, OD
Optometrist · Derry, NH
Shared published services3 shared services · view billing descriptions
67%Service-mix similarity~5.7 milesView profile →
Michael William Hill, O.D.
Optometrist · Dracut, MA
Shared published services3 shared services · view billing descriptions
66%Service-mix similarity~8.9 milesView profile →
Nisha Patel, O.D.
Optometrist · Londonderry, NH
Shared published services3 shared services · view billing descriptions
64%Service-mix similarity~5.5 milesView profile →
Leigh Sha R Chervenka, OD
Optometrist · Nashua, NH
Shared published services3 shared services · view billing descriptions
62%Service-mix similarity~8.7 milesView profile →
David Kahan, OD
Optometrist · Methuen, MA
Shared published services3 shared services · view billing descriptions
61%Service-mix similarity~8.3 milesView profile →
Nicole Leo, OD
Optometrist · Derry, NH
Shared published services3 shared services · view billing descriptions
60%Service-mix similarity~5.7 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.