Michael Geary, MD
As reported to Medicare
- Credential
- MD
- Primary specialty
- Orthopedic Surgery
- Medical school graduation
- 2001
- Medical school
- University of Connecticut School of Medicine
- National Provider Identifier (NPI)
- 1194816728
Total number of knee replacements this clinician billed to Medicare in the most recent 12-month claims period, as reported by CMS.
Percentile rank of 23 knee replacements compared to peers CMS lists under Orthopedic Surgery, Sports Medicine, or Hand Surgery who have billed at least one knee replacement to Medicare in the same period.
Source: Centers for Medicare & Medicaid Services (June 2026 release).
Dr. Geary's Knee Replacement Billing Volume Compared to Peers
Reading the curve: find a volume along the bottom, and the line gives the percentile of the clinicians CMS lists under Orthopedic Surgery, Sports Medicine, or Hand Surgery at or below it. The marked point is this clinician. The curve begins at the 32nd percentile because CMS suppresses counts below 11, and 3,333 clinicians in the group carry that range instead of a number. It ends at the 99th percentile, and a small number of clinicians bill more than that.
Source: Centers for Medicare & Medicaid Services (June 2026 release).
| Percentile | Knee Replacements billed to Medicare |
|---|---|
| 40th | 15 |
| 50th | 22 |
| 60th | 30 |
| 70th | 42 |
| 80th | 59 |
| 90th | 93 |
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.
National Percentile Calculation
CMS publishes its own percentile for this data using a single, national pool that also includes the clinicians listed with the specialties of Physician Assistant and Nurse Practitioner. We use CMS's percentile formula, but restrict the comparison group to the clinicians CMS records under Orthopedic Surgery, Sports Medicine, or Hand Surgery, so our number answers a narrower question: how does this clinician's procedure volume compare with other clinicians who billed Medicare for at least one knee replacement and reported one of those specialties?