Dr. Thomas O'hagan, M.D.
Contact & Location
231-935-0900
Traverse City, MI 49684
Kalkaska, MI 49646
Cadillac, MI 49601
Traverse City, MI 49684
Dr. O'hagan performs more knee replacement procedures than 38% of orthopedic surgeons in Michigan, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #124 of 202 ranked knee surgeons in Michigan.
About Dr. O'hagan
Practice. Dr. Thomas O'hagan is a board-certified orthopedic surgeon practicing in Traverse City, Michigan. The latest annual CMS data records 22 knee replacements. That is #124 in Michigan for knee replacement. A Medicare provider since 2008.
Trend. Medicare records run from 2016 to 2024, 9 years. Volume rose from 16 procedures a year to 22, up 38%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 22 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Traverse City has 13 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Knee Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 16 |
| 2017 | 18 |
| 2018 | 25 |
| 2019 | 23 |
| 2020 | 24 |
| 2021 | 18 |
| 2022 | 15 |
| 2023 | 17 |
| 2024 | 22 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 23% to 28% for knee replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. O'hagan Compares
Procedure volume compared to the Michigan state average.
Volume Trend Analysis
Dr. O'hagan's Medicare-recorded procedure volume has trended upward over 9 years, increasing 38% from 16 procedures in 2016 to 22 in the most recent data.
Hospital Affiliations & Quality
Quality ratings and complication rates are hospital-level metrics from CMS Hospital Compare and do not reflect individual surgeon performance. Star ratings updated quarterly. Complication data covers a rolling 3-year period.
Patient Resources: Preparing for Knee Replacement
If you are considering knee replacement surgery, these evidence-based guides can help you prepare and recover:
An overview of current surgical approaches including robotic-assisted and minimally invasive techniques, implant options, and expected outcomes.
Questions to Ask Your Surgeon Before Joint ReplacementA practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
Knee Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after knee replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full knee replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. O'hagan
How does Dr. O'hagan's procedure volume compare to other Michigan surgeons?
Dr. O'hagan has performed 22 Medicare-verified joint replacement procedures. The Michigan average is 49 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. O'hagan ranks #185 out of 256 orthopedic surgeons in Michigan.
What types of joint replacement does Dr. O'hagan perform?
Dr. O'hagan's reported Medicare volume is focused on knee replacement, with 22 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. O'hagan in Traverse City?
Yes. There are 13 orthopedic surgeons in Traverse City in the current Medicare dataset. Patients can compare procedure volumes and specializations to choose the surgeon who best fits their needs. Use the state page to view all Michigan surgeons.
What does the Medicare data for Dr. O'hagan represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 23% to 28% for knee replacement, which puts Dr. O'hagan's total volume across all insurers at roughly 80 to 100 procedures against the 22 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. O'hagan's procedure volume changed over time?
Yes. Dr. O'hagan's Medicare-recorded volume has increased from 16 procedures in 2016 to 22 in the most recent data, a 38% increase over 9 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 25 procedures in 2018.
Which hospitals is Dr. O'hagan affiliated with?
According to CMS facility affiliation data, Dr. O'hagan is affiliated with Munson Medical Center, Munson Healthcare Grayling Hospital, Paul Oliver Memorial Hospital, Kalkaska Memorial Health Center, Munson Healthcare Charlevoix Hospital.
How does Dr. O'hagan compare to other orthopedic surgeons in Traverse City?
Among the 13 orthopedic surgeons in Traverse City, Dr. O'hagan ranks #12 by total Medicare procedure volume. The highest-volume surgeon in Traverse City has 107 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. O'hagan practices?
Munson Medical Center (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Munson Healthcare Grayling Hospital (3 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Traverse City, Michigan
Dr. O'hagan's 22 Medicare procedures are below the Traverse City average of 63. The table below compares verified procedure volumes for orthopedic surgeons practicing in Traverse City.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Todd Galdes | 107 | Hip, Knee |
| Dr. William Austin | 71 | Hip, Knee |
| Dr. Brent Wiersema | 67 | Hip, Knee |
| Dr. Eric Lerche | 64 | Hip, Knee |
| Dr. Michael Peters | 58 | Knee |
| Dr. Justin Hollander | 49 | Hip, Knee |
Patient Resources & Verification
Research reviews, verify credentials, and check official quality data through these trusted sources:
Medicare Care Compare and NPI Registry are official U.S. government sources. Google reviews reflect user-submitted feedback. OrthoProcedures.com does not verify the accuracy of third-party review content.