Knee replacement volume in Grand Rapids, Michigan

36 clinicians CMS lists under Orthopedic Surgery, Sports Medicine, or Hand Surgery billed at least one knee replacement in Grand Rapids in the June 2026 release.

Clinicians

Clinician	Knee replacements billed	Percentile rank
Scott Sporer, MD	280	99%
Donald Knapke, MD	195	99%
Perry Greene, MD	126	95%
Charles Sherry, DO	80	87%
Kory Johnson, DO	68	83%
Derick Johnson, DO	62	81%
Jon Hop, MD	46	73%
John Mahajan, MD	40	68%
Michael Jabara, MD	39	67%
Paull Gossett, MD	32	61%
Bryan Pack, MD	31	60%
Karl Roberts, MD	30	59%
Timothy Henne, MD	28	57%
Kurt Geffken, MD	26	55%
Thomas Malvitz, MD	26	55%
Jerry Lorio, MD	25	53%
Clayton Perry, MD	25	53%
Jacob Lytle, DO	19	46%
Benjamin Strong, MD	19	46%
Andrew Fras, MD	17	43%
Patrick Zietz, MD	17	43%
Geoffrey Sandman, MD	16	41%
Thomas Matelic, MD	15	39%
Charles Crellin, MD	12	34%
Jeffrey Anhalt, DO	1-10	32% or below
Marshall Boose, DO	1-10	32% or below
Jeffrey Cross, MD	1-10	32% or below
Kristopher Danielson, DO	1-10	32% or below
Erik Hedlund, DO	1-10	32% or below
John Maskill, MD	1-10	32% or below
Stephen O'Neil, DO	1-10	32% or below
Garett Pangrazzi, MD	1-10	32% or below
Tyler Spiering, MD	1-10	32% or below
Kevin Steelman, MD	1-10	32% or below
Peter Theut, MD	1-10	32% or below
Thomas Wenzlick, MD	1-10	32% or below

Sorted by the number of knee replacements billed to Medicare, highest first. This is an ordering of one published figure, not a ranking of quality, skill, or outcomes. CMS suppresses counts of 10 and below to protect patient privacy and publishes the range instead, which is not a count of zero; 12 of these clinicians carry that range.

Understanding CMS Data

These figures are based on knee replacements billed to Original Medicare and Medicare Advantage as reported by the Centers for Medicare & Medicaid Services (CMS) in their June 2026 data release. The CMS data doesn't include procedures performed for patients who have other health care coverage (e.g., commercially insured, self pay, or VA). Furthermore, CMS sums up specific billing codes that cover first-time knee replacement, partial knee replacement, and revision of a previous knee replacement to calculate the total number of knee replacements. Billing variation and coding errors could potentially affect CMS's data. Therefore, the knee replacement volume data reported by CMS may be higher or lower than the actual total knee replacements performed by a clinician. We share the total knee replacement figures for the clinicians CMS lists under Orthopedic Surgery, Sports Medicine, or Hand Surgery as CMS publishes them, without alteration.

Source: Centers for Medicare & Medicaid Services (June 2026 release).