Knee replacement clinicians in Lancaster, Pennsylvania
CMS lists 25 clinicians with a primary specialty of Orthopedic Surgery, Sports Medicine, or Hand Surgery who have billed Medicare for at least one knee replacement and practice in Lancaster, Pennsylvania (details below).
Knee replacement volume
| Clinician | Knee replacements billed | Percentile rank |
|---|---|---|
| Thomas Renz, DO | 147 | 97% |
| Andrew Old, MD | 99 | 91% |
| Young Jee, MD | 97 | 91% |
| Christopher Cooke, MD | 88 | 89% |
| Jeffrey Cherian, DO | 71 | 84% |
| Gregory Tocks, DO | 68 | 83% |
| Thomas Westphal, MD | 59 | 79% |
| Rodney Brenneman, MD | 57 | 79% |
| Wayne Conrad, MD | 54 | 77% |
| Eric Kutz, DO | 49 | 74% |
| Brett Campbell, MD | 46 | 72% |
| David Gregory, DO | 33 | 62% |
| Matthew Poorman, MD | 32 | 61% |
| Seth Baublitz, DO | 26 | 54% |
| James Fenwick, MD | 24 | 52% |
| Carl Becker, MD | 21 | 48% |
| John Rodgers, MD | 18 | 44% |
| Paul Carroll, MD | 15 | 39% |
| Michael Gish, MD | 14 | 37% |
| Michael Campbell, DO | 12 | 33% |
| John Abraham, MD | 1-10 | 31% or below |
| Carl Adolph, MD | 1-10 | 31% or below |
| Brian Brislin, MD | 1-10 | 31% or below |
| Brendan Casey, DO | 1-10 | 31% or below |
| Joel Horning, MD | 1-10 | 31% or below |
Sorted by the number of knee replacements billed to Medicare, highest first, not by quality or skill. CMS suppresses counts between 1 and 10 to protect patient privacy and publishes the range instead.
Reported in previous releases
CMS does not report a knee replacement volume for these clinicians in the August 18, 2026 release. Their pages show figures from earlier releases.
- James Carson, MD Last reported June 26, 2026
Understanding CMS Data
CMS's "Knee replacement" category combines specific billing codes for knee replacement surgery to calculate the number of times each clinician billed Medicare for a "Knee replacement." These include first-time knee replacement, partial knee replacement, and revision of a previous knee replacement. 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 knee 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.
Source: Centers for Medicare & Medicaid Services (August 18, 2026 release).