Dr. Mark Hasenauer, MD
Contact & Location
410-554-2270
Baltimore, MD 21218
About Dr. Hasenauer
Dr. Mark Hasenauer is a board-certified orthopedic surgeon practicing in Baltimore, Maryland. A Medicare provider since 2015, Dr. Hasenauer performed 78 Medicare-verified hip replacements (#14 in Maryland) and 68 knee replacements in the latest annual CMS data, for a combined total of 146 procedures.
In Maryland, Dr. Hasenauer performs above the state average in hip (78 vs 42), above the state average in knee (68 vs 49).
Dr. Hasenauer's reported Medicare volume is split between hip replacements (78 cases) and knee replacements (68 cases).
Baltimore is home to 41 orthopedic surgeons in the current Medicare dataset. Patients in the Baltimore area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Hasenauer extend back to 2020, covering 5 years of data. Over that period, recorded procedure volume increased from 47 to 146 in the most recent data, a 211% increase. This sustained growth reflects an expanding joint replacement practice.
Among 4,532 hip replacement surgeons tracked nationally, Dr. Hasenauer's 78 verified procedures is more than 2x the national average of 36.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 27 | 20 |
| 2021 | 51 | 31 |
| 2022 | 34 | 27 |
| 2023 | 33 | 28 |
| 2024 | 78 | 68 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.
How Dr. Hasenauer Compares
Procedure volume compared to the Maryland state average.
Volume Trend Analysis
Dr. Hasenauer's Medicare-recorded procedure volume has trended upward over 5 years, increasing 211% from 47 procedures in 2020 to 146 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 Hip Replacement
If you are considering hip replacement surgery, these evidence-based guides can help you prepare and recover:
Understanding the progression from conservative treatments to surgical intervention, and how to determine when hip replacement becomes the right choice.
Prehabilitation: Preparing Your Body for SurgeryEvidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Rehabilitation Roadmap: Your Complete Recovery GuideA structured physical therapy progression from the first post-op exercises through full strength and mobility restoration over 3 to 6 months.
Medicare Bundled Payment Programs for Joint ReplacementHow bundled payment models affect your joint replacement costs and care coordination, and what it means for hospital and surgeon selection.
Hip Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Hasenauer
How does Dr. Hasenauer's procedure volume compare to other Maryland surgeons?
Dr. Hasenauer has performed 146 Medicare-verified joint replacement procedures. This is more than 2x the Maryland average of 71 procedures per surgeon. Dr. Hasenauer ranks #22 out of 166 orthopedic surgeons in Maryland.
What types of joint replacement does Dr. Hasenauer perform?
Dr. Hasenauer's Medicare data shows procedures in hip replacement (78 cases) and knee replacement (68 cases).
How experienced is Dr. Hasenauer with hip replacement surgery?
Dr. Hasenauer ranks #14 in Maryland for hip replacement with 78 Medicare-verified procedures. This high ranking among 166 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Hasenauer in Baltimore?
Yes. There are 41 orthopedic surgeons in Baltimore 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 Maryland surgeons.
What does the Medicare data for Dr. Hasenauer represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Hasenauer's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 146 procedures shown here.
Has Dr. Hasenauer's procedure volume changed over time?
Yes. Dr. Hasenauer's Medicare-recorded volume has increased from 47 procedures in 2020 to 146 in the most recent data, a 211% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 146 procedures in 2024.
Does Dr. Hasenauer perform more than one type of joint replacement?
Yes. Dr. Hasenauer's Medicare data shows procedures in hip replacement (78 cases), knee replacement (68 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Hasenauer affiliated with?
According to CMS facility affiliation data, Dr. Hasenauer is affiliated with Medstar Union Memorial Hospital, Medstar Good Samaritan Hospital.
How does Dr. Hasenauer compare to other orthopedic surgeons in Baltimore?
Among the 41 orthopedic surgeons in Baltimore, Dr. Hasenauer ranks #5 by total Medicare procedure volume. The highest-volume surgeon in Baltimore has 331 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Hasenauer practices?
Medstar Union Memorial Hospital (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Medstar Good Samaritan Hospital (3 out of 5 CMS stars). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Baltimore, Maryland
Dr. Hasenauer's 146 Medicare procedures are below the Baltimore average of 176. The table below compares verified procedure volumes for orthopedic surgeons practicing in Baltimore.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Joseph Ciotola | 331 | Hip, Knee, Shoulder |
| Dr. Frank Ebert | 190 | Hip, Knee |
| Dr. Marc Hungerford | 180 | Hip, Knee |
| Dr. Robert McKinstry | 160 | Hip, Knee |
| Dr. Harpal Khanuja | 119 | Hip, Knee |
| Dr. David Gold | 106 | 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.