REPORTED PROCEDURE ACTIVITY

Knee Replacement

Clinicians with activity displayed in the CMS procedure file. Published count ranges are preserved.

What these counts mean

Published Medicare activity in a one-year claims window, not all patients or a quality score. Ranges stay ranges. The source does not specify exact service dates. Coverage and source details

Nationwide · Exact areaEdit location

Clinicians with reported activity

Reported Medicare activity (not quality)

Ordered by the lower end of published Medicare count ranges. Activity is not a quality score.

Mark W. Hanna, M.D.

Orthopedic Surgery

Atlanta, GA
242Published Medicare activity

Gustav Fischer, MD

Orthopedic Surgery (CMS)

Portland, OR
241Published Medicare activity

Cynthia Kahlenberg

Orthopedic Surgery (CMS)

New York, NY
240Published Medicare activity

Robert Goldman

Orthopedic Surgery (CMS)

Morristown, NJ
237Published Medicare activity

Vasili Karas, M.D.

Orthopedic Surgery (CMS)

Chicago, IL
233Published Medicare activity

Tony Shen

Orthopedic Surgery (CMS)

New York, NY
233Published Medicare activity

CMS reports a one-year claims window with a reporting lag. These counts are not total lifetime experience, patient counts, or evidence of quality. Read the method and limits.

Source: CMS Utilization Data · Published Oct 15, 2026.