Knee replacement clinicians in Saint Louis, Missouri

CMS lists 62 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 Saint Louis, Missouri (details below).

Knee replacement volume

Clinician	Knee replacements billed	Percentile rank
Ryan Nunley, MD	293	99%
Christopher Palmer, DO	142	96%
Ilya Bendich, MD	133	95%
Tyler Calkins, MD	94	90%
Coles Lhommedieu, MD	89	89%
Andrew Schneider, MD	86	88%
Richard Johnston, MD	80	87%
John McAllister, MD	80	87%
Christopher Mudd, MD	78	86%
Robert Kramer, MD	73	85%
Brian Wegman, MD	73	85%
Robert Barrack, MD	65	82%
Joseph Gibian, MD	61	80%
David Irvine, MD	55	77%
Anthony Berni, MD	54	77%
Ryan Pitts, MD	54	77%
Dane Glueck, MD	51	75%
Ryan Couchman, MD	50	75%
Gregory Galakatos, MD	49	74%
Travis Junge, MD	48	74%
Robert Sigmund, MD	45	72%
Nicholas Wilson, MD	42	69%
Alex Gu, MD	41	69%
Victor Wu, MD	41	69%
Korey Partenheimer, DO	40	68%
Stephen Benz, MD	39	67%
Kevin Quigley, MD	37	65%
Tyler Ragsdale, MD	37	65%
Jeffrey Whiting, MD	37	65%
Kimberly Bartosiak, MD	35	64%
Mitchell Wattles, MD	35	64%
Matthew Collard, MD	32	61%
Frank Thomas, MD	32	61%
Jody Jachna, MD	29	58%
William Behrens, MD	26	54%
Brian Fissel, MD	26	54%
Craig Ruble, MD	25	53%
James Burke, MD	20	47%
Daniel Schwarze, MD	20	47%
Thomas Berkbigler, DO	19	45%
Vince Lai, MD	17	42%
Robert Sciortino, MD	17	42%
Jeffrey Jenks, DO	16	41%
Robert Comrie	15	39%
Gregory Nelson, MD	13	35%
Parth Vyas, DO	13	35%
Jesse Beard, DO	12	33%
Shalen Kouk, MD	11	31%
Paul Maynard, MD	11	31%
Sean Cahill, MD	1-10	31% or below
Tony Chien, DO	1-10	31% or below
David Clever, MD	1-10	31% or below
Karsen Corn, MD	1-10	31% or below
Aliasgar Dalal, MD	1-10	31% or below
Dennis English, MD	1-10	31% or below
Andrew Gelven, DO	1-10	31% or below
Van Krueger, MD	1-10	31% or below
Waleed Mohammad, MD	1-10	31% or below
Angela Passanise, DO	1-10	31% or below
Kenneth Smith, MD	1-10	31% or below
Paul Spezia, DO	1-10	31% or below
Jesse Susi, 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).