Knee replacement clinicians in Philadelphia, Pennsylvania

CMS lists 46 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 Philadelphia, Pennsylvania (details below).

Knee replacement volume

Clinician	Knee replacements billed	Percentile rank
David Nazarian, MD	315	99%
Paul Courtney, MD	299	99%
Craig Israelite, MD	283	99%
Chad Krueger, MD	250	99%
David Craft, MD	220	99%
Peter Sharkey, MD	188	98%
James Purtill, MD	172	98%
Stephen Sizer, DO	170	98%
Gregory Deirmengian, MD	169	98%
William Hozack, MD	160	97%
Yale Fillingham, MD	148	97%
Carl Deirmengian, MD	135	96%
Arthur Bartolozzi, MD	131	95%
Charles Nelson, MD	122	94%
Neil Sheth, MD	122	94%
Jonathan Garino, MD	116	94%
Matthew Lorei, MD	102	92%
Alirio Demeireles, MD	95	90%
Christopher Travers, MD	93	90%
Arjun Saxena, MD	92	90%
Jordan Cohen, MD	84	88%
Shyam Brahmabhatt, MD	81	87%
Scot Brown, MD	76	86%
Thomas Pumo, MD	76	86%
Ellen Tsay, MD	65	82%
Scott Ritterman, MD	64	82%
Emmanuel Gibon, MD	46	72%
Jeffrey Vakil, MD	44	71%
William Emper, DO	42	69%
Mark Desmond, MD	37	65%
Kevin Freedman, MD	33	62%
Paul Horenstein, MD	31	60%
James Zurbach, MD	25	53%
Thomas Greene, MD	24	52%
Timothy Amann, DO	21	48%
Michael Ciccotti, MD	19	45%
Cara Cipriano, MD	19	45%
Harrison Potak, MD	19	45%
Christopher Anthony, MD	18	44%
Nipun Sodhi, MD	14	37%
Robert Ruggiero, MD	12	33%
Lorraine Boakye, MD	1-10	31% or below
Todd Chertow, MD	1-10	31% or below
Megan Couso, MD	1-10	31% or below
Derek Donegan, MD	1-10	31% or below
Benjamin Potter, 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.

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).