Hip replacement clinicians in San Francisco, California

CMS lists 39 clinicians with a primary specialty of Orthopedic Surgery, Sports Medicine, or Hand Surgery who have billed Medicare for at least one hip replacement and practice in San Francisco, California (details below).

Hip replacement volume

Clinician	Hip replacements billed	Percentile rank
Robert Mayle, MD	194	99%
Jeffrey Barry, MD	177	99%
Peter Callander, MD	143	99%
Erik Hansen, MD	103	97%
Vibhu Banala, MD	74	92%
Thomas Barber, MD	64	89%
Stefano Bini, MD	64	89%
Nicholas Gannon, MD	58	87%
Arthur McDowell, MD	47	83%
Claudio Diaz Ledezma, MD	42	80%
Christopher Cox, MD	35	76%
Jennifer Van Warmerdam, MD	31	72%
Anthony Wiggins, MD	22	63%
Michael Feldstein, MD	17	57%
Christopher Walter, DO	15	54%
Nikolaj Wolfson, MD	11	46%
John Belzer, MD	1-10	46% or below
Keith Chan, MD	1-10	46% or below
Anthony Ding, MD	1-10	46% or below
Kanwaljit Gill, MD	1-10	46% or below
David Goltz, MD	1-10	46% or below
Kevin Hwang, MD	1-10	46% or below
Timothy Kahn, MD	1-10	46% or below
Justin Krogue, MD	1-10	46% or below
Ajith Malige, MD	1-10	46% or below
Meir Marmor, MD	1-10	46% or below
Amir Matityahu, MD	1-10	46% or below
Jothi Murali, MD	1-10	46% or below
Kiauntee Murray, MD	1-10	46% or below
Alexandra Paul, MD	1-10	46% or below
Victor Prieto, MD	1-10	46% or below
Julian Rizos, MD	1-10	46% or below
Akash Shah, MD	1-10	46% or below
Robert Teasdale, MD	1-10	46% or below
Paul Toogood, MD	1-10	46% or below
Kudret Usmani, MD	1-10	46% or below
Frank Valone, MD	1-10	46% or below
Derek Ward, MD	1-10	46% or below
Rosanna Wustrack, MD	1-10	46% or below

Sorted by the number of hip 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 "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.

Source: Centers for Medicare & Medicaid Services (August 18, 2026 release).