Russell Cohen, MD
As reported to Medicare
- Credential
- MD
- Primary specialty
- Orthopedic Surgery
- Medical school graduation
- 1991
- Medical school
- University of Arizona College of Medicine
- National Provider Identifier (NPI)
- 1700887460
Total number of hip replacements this clinician billed to Medicare in the most recent 12-month claims period, according to CMS.
Percentile rank of 78 hip replacements compared to other clinicians with a primary specialty of Orthopedic Surgery, Sports Medicine, or Hand Surgery who have billed Medicare for at least one hip replacement in the same period.
The figures above reflect only procedures that this clinician billed to Medicare, according to CMS. Therefore, they may not reflect the total number of procedures this clinician performed during the 12-month reporting period. See Understanding CMS Data below.
Source: Centers for Medicare & Medicaid Services (August 18, 2026 release).
Russell Cohen's Hip Replacement Billing Volume Compared to Peers
Reading the curve: find a volume along the bottom, and the line gives the percentile of clinicians with a primary specialty of Orthopedic Surgery, Sports Medicine, or Hand Surgery at or below it. The marked point is this clinician. The shaded block covers the 4,476 clinicians CMS reports as 1-10, because CMS suppresses counts below 11. The axis runs from 0 to 383, the highest count CMS reports in the group, and gives low counts more room than high ones so the whole range fits. The labels under the axis mark the 25th percentile, the median and the 75th percentile; the 25th percentile falls inside the 1-10 range.
Source: Centers for Medicare & Medicaid Services (August 18, 2026 release).
| Percentile | Hip Replacements billed to Medicare |
|---|---|
| 50th | 13 |
| 60th | 19 |
| 70th | 28 |
| 80th | 41 |
| 90th | 65 |
| Highest | 383 |
Other procedures CMS reports for Russell Cohen
CMS publishes a separate count for this clinician in the categories below. Each figure is counted and ranked entirely on its own, so the counts are not added together and the percentile ranks are not comparable with one another.
| Procedure | Procedures billed | Percentile rank |
|---|---|---|
| Knee replacement | 160 | 97% |
Each percentile rank compares this clinician only with the other clinicians in that procedure's comparison group, so the group changes from row to row. A count shown as a range means CMS suppressed it to protect patient privacy; it does not mean zero.
Previous data releases
CMS refreshes this data "on a quarterly basis, as technically feasible." The table shows this clinician's figures from each CMS data release.
| CMS data release | Hip replacements billed | Percentile rank |
|---|---|---|
| August 18, 2026 Current | 78 | 93% |
| August 11, 2026 Prior | 77 | 93% |
| June 26, 2026 Prior | 77 | 93% |
About these releases. Each release counts procedures over what CMS describes as "a one-year observation window, with a lookback beginning three months prior to the present day", allowing three months for claims to be submitted and processed. CMS does not publish the start and end dates of the window behind any release, and consecutive releases may cover overlapping periods, or the same period with later-arriving claims added.
Understanding CMS Data
CMS's "Hip replacement" category combines specific billing codes for hip replacement surgery to calculate the number of times each clinician billed Medicare for a "Hip replacement." These include first-time hip replacement, partial hip replacement, and revision of a previous hip replacement. The category does not include every operation that implants a hip prosthesis: CMS leaves out the billing code that covers hip replacement to treat a broken hip, so those operations do not count toward this total. CMS reports only procedures that clinicians billed to Original Medicare and Medicare Advantage. Therefore, CMS's procedure volume data does not include procedures that clinicians may have performed on patients who have other health care coverage (e.g., commercial insurance, self-pay, or the VA). Billing variation and coding errors can also affect CMS's data. Therefore, the number of procedures that CMS reports for a clinician may be higher or lower than the actual number of hip replacements a clinician performed during the reporting period. Lastly, only clinicians with a primary specialty of Orthopedic Surgery, Sports Medicine, or Hand Surgery (as reported to Medicare) are presented.
National Percentile Calculation
CMS publishes its own percentile for this data using a single, national pool that also includes clinicians with a primary specialty of Physician Assistant or Nurse Practitioner. We use CMS's percentile formula, but restrict the comparison group to clinicians with a primary specialty of Orthopedic Surgery, Sports Medicine, or Hand Surgery, so our number answers a narrower question: how does this clinician's procedure volume compare with other clinicians who billed Medicare for at least one hip replacement and reported one of those as their primary specialty?