Knee replacement clinicians in Bethesda, Maryland

CMS lists 80 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 Bethesda, Maryland (details below).

Knee replacement volume

Clinician	Knee replacements billed	Percentile rank
Christopher Cannova, MD	260	99%
Kevin Fricka, MD	245	99%
Robert Sershon, MD	192	99%
Mathias Bostrom, MD	153	97%
Sridhar Durbhakula, MD	129	95%
Gautam Siram, MD	127	95%
Nigel Azer, MD	125	95%
William Hamilton, MD	118	94%
Mark Hasenauer, MD	113	93%
Savyasachi Thakkar, MD	112	93%
Frank Ebert, MD	105	92%
Harpal Khanuja, MD	97	91%
Craig McAsey, MD	96	90%
James Nace, DO	93	90%
Robert McKinstry, MD	92	90%
James Melvin, MD	92	90%
Matthew Harb, MD	73	85%
Brett Hampton, MD	67	83%
Marc Connell, MD	65	82%
Kurt Schluntz, MD	65	82%
Antoni Goral, MD	62	81%
Thomas Ring, MD	61	80%
Min Lu, MD	60	80%
Kevin Park, MD	60	80%
Louis Ruland, MD	60	80%
Colvin Wellborn, MD	60	80%
Charles Engh, MD	54	77%
Brett Levine, MD	52	76%
Nirav Patel, MD	50	75%
Korboi Evans, MD	49	74%
Joseph Hanna, MD	49	74%
Allison Fillar, MD	46	72%
Anthony Avery, MD	45	72%
Bruce Knolmayer, MD	44	71%
Ryan Scully, MD	44	71%
John Klimkiewicz, MD	42	69%
Kenneth Vaz, MD	42	69%
Zohair Alam, MD	41	69%
Jefferson Lansford, MD	41	69%
Afamefuna Nduaguba, MD	39	67%
Michael Anvari, MD	38	66%
Stephen Saddler, MD	33	62%
Mark Peterson, MD	32	61%
Carey Politzer, MD	31	60%
Sandesh Rao, MD	30	59%
David Novak, MD	29	58%
Charles Mess, MD	24	52%
Christopher Raffo, MD	23	51%
Robert Sterling, MD	23	51%
Carter Mitchell, MD	17	42%
Irvin Guterman, MD	16	41%
Katharine Harper, MD	16	41%
Brock Adams, MD	15	39%
Marc Rankin, MD	15	39%
Jordan Villa, MD	15	39%
James Gardiner, MD	14	37%
Ronald Paik, MD	13	35%
Adedapo Ajayi, MD	1-10	31% or below
Steven Bleckner, MD	1-10	31% or below
Barry Boden, MD	1-10	31% or below
Emily Cha, MD	1-10	31% or below
Wiemi Douoguih, MD	1-10	31% or below
Scott Faucett, MD	1-10	31% or below
James Gasho, MD	1-10	31% or below
Andre Gazdag, MD	1-10	31% or below
Nadim Hallal, MD	1-10	31% or below
Robert Henshaw, MD	1-10	31% or below
Alex Johnson, MD	1-10	31% or below
Derek Kram, MD	1-10	31% or below
Herbert Lane, MD	1-10	31% or below
Edward Magur, MD	1-10	31% or below
Douglas Murphy, MD	1-10	31% or below
Rajeev Pandarinath, MD	1-10	31% or below
Tushar Patel, MD	1-10	31% or below
Kirsten Poehling Monaghan, MD	1-10	31% or below
David Smink, MD	1-10	31% or below
William Volk, MD	1-10	31% or below
James Weiss, MD	1-10	31% or below
Victor Wowk, MD	1-10	31% or below
Bashir Zikria, 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).