Gwenda Renee' Gnadt, O.D., M.P.H.
Optometrist · Nesconset, NY
Shared published services3 shared services · view billing descriptions
77%Service-mix similarity~8.8 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Steven I Goodman, O.D. with clinicians in the same registry specialty: Optometrist.
MEDFORD, NY · 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 · 24 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Valentina Blaine, O.D.
Optometrist · Centereach, NY
Shared published services3 shared services · view billing descriptions
72%Service-mix similarity~6.3 milesView profile →
Anthony Marinelli, OD
Optometrist · Patchogue, NY
Shared published services3 shared services · view billing descriptions
69%Service-mix similarity~3.9 milesView profile →
Brian Young Cho, O.D., M.S., F.A.A.O
Optometrist · Bellport, NY
Shared published services3 shared services · view billing descriptions
68%Service-mix similarity~3.6 milesView profile →
Edward John Moylan, O.D.
Optometrist · Port Jefferson Station, NY
Shared published services3 shared services · view billing descriptions
64%Service-mix similarity~7.4 milesView profile →
Tracy Rossi, O.D.
Optometrist · Lake Ronkonkoma, NY
Shared published services3 shared services · view billing descriptions
64%Service-mix similarity~7.6 milesView profile →
Gina Maria Cardone, O.D.
Optometrist · Patchogue, NY
Shared published services3 shared services · view billing descriptions
63%Service-mix similarity~3.9 milesView profile →
Nusrat Jahan, OD
Optometrist · Miller Place, NY
Shared published services3 shared services · view billing descriptions
63%Service-mix similarity~8.7 milesView profile →
Wei Zhang, O.D.
Optometrist · Centereach, NY
Shared published services3 shared services · view billing descriptions
54%Service-mix similarity~6.3 milesView profile →
Lori Landrio
Optometrist · Patchogue, NY
Shared published services3 shared services · view billing descriptions
52%Service-mix similarity~3.9 milesView profile →
Eric D Ludwig, O.D.
Optometrist · Port Jefferson, NY
Shared published services3 shared services · view billing descriptions
46%Service-mix similarity~9.7 milesView profile →
Gregory Disanto, O.D.
Optometrist · Sayville, NY
Shared published services3 shared services · view billing descriptions
45%Service-mix similarity~7.2 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.