Dr. Erik Kroger, MD

Orthopedic Surgery
82 procedures 2 hospitals Madison, WI
Latest available Medicare data — updated April 2026

Contact & Location

1211 Fish Hatchery Rd
Madison, WI 53715
NPI: 1649420712
Credentials: MD
Active Medicare provider
Find Practice on Google Maps
Hip replacement recovery kit Essentials every patient wishes they bought first
National Comparison by Procedure
Hip 50 vs 36 avg (4,532 surgeons)
Knee 32 vs 45 avg (6,599 surgeons)

Dr. Erik Kroger is a board-certified orthopedic surgeon practicing in Madison, Wisconsin. Dr. Kroger has performed 50 Medicare-verified hip replacements (#11 in Wisconsin) and 32 knee replacements, for a combined total of 82 procedures.

In Wisconsin, Dr. Kroger performs above average in hip (50 vs 29 avg), near average in knee (32 vs 36 avg).

Dr. Kroger's reported Medicare volume is split between hip replacements (50 cases) and knee replacements (32 cases).

Madison is home to 23 orthopedic surgeons in the current Medicare dataset. Patients in the Madison area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.

Dr. Kroger first appears in the Medicare dataset in 2024. With 1 year of recorded data, the longitudinal trend is still developing.

Among 4,532 hip replacement surgeons tracked nationally, Dr. Kroger's 50 verified procedures is above the national average of 36.

Verified Medicare Cases

Hip Replacement
50 verified cases
#11 in Wisconsin
Knee Replacement
32 verified cases
#68 in Wisconsin
Estimated total: 220 – 250 procedures (all insurers)
Based on Medicare FFS representing 33–37% of national joint replacement volume
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. Kroger Compares

Procedure volume compared to the Wisconsin state average.

Hip High
50 Avg: 29
Knee Average
32 Avg: 36
Dr. Kroger Wisconsin Average

Hospital Affiliations & Quality

H
Ssm Health St Mary'S Hospital - Madison
4/5
Madison, WI
Similar to national avg
H
Stoughton Hospital
Stoughton, WI
Low case volume

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:

Hip Replacement Recovery Overview

Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:

Week 1-2 Walking with assistive device (walker or cane). Gentle range-of-motion exercises begin. Most patients can manage basic self-care.
Week 3-6 Transition to walking independently. Resume driving short distances. Physical therapy focuses on strength and balance.
Week 7-12 Return to most daily activities and light exercise. Stair climbing improves. Many patients return to desk work.
Month 4-6 Full recovery for most patients. Resume recreational activities, golf, swimming, and low-impact exercise.

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. Kroger

How does Dr. Kroger's procedure volume compare to other Wisconsin surgeons?

Dr. Kroger has performed 82 Medicare-verified joint replacement procedures. This is significantly above the Wisconsin average of 51 procedures per surgeon. Dr. Kroger ranks #29 out of 189 orthopedic surgeons in Wisconsin.

What types of joint replacement does Dr. Kroger perform?

Dr. Kroger's Medicare data shows procedures in hip replacement (50 cases) and knee replacement (32 cases).

How experienced is Dr. Kroger with hip replacement surgery?

Dr. Kroger ranks #11 in Wisconsin for hip replacement with 50 Medicare-verified procedures. This high ranking among 189 state surgeons indicates significant experience with this specific procedure.

Are there other orthopedic surgeons near Dr. Kroger in Madison?

Yes. There are 23 orthopedic surgeons in Madison 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 Wisconsin surgeons.

What does the Medicare data for Dr. Kroger 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. Kroger's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 82 procedures shown here.

Does Dr. Kroger perform more than one type of joint replacement?

Yes. Dr. Kroger's Medicare data shows procedures in hip replacement (50 cases), knee replacement (32 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.

Which hospitals is Dr. Kroger affiliated with?

According to CMS facility affiliation data, Dr. Kroger is affiliated with Ssm Health St Mary'S Hospital - Madison, Stoughton Hospital.

How does Dr. Kroger compare to other orthopedic surgeons in Madison?

Among the 23 orthopedic surgeons in Madison, Dr. Kroger ranks #8 by total Medicare procedure volume. The highest-volume surgeon in Madison has 246 verified Medicare procedures.

What are the quality ratings for hospitals where Dr. Kroger practices?

Ssm Health St Mary'S Hospital - Madison (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Stoughton Hospital (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 Madison, Wisconsin

Dr. Kroger's 82 Medicare procedures are below the Madison average of 158. The table below compares verified procedure volumes for orthopedic surgeons practicing in Madison.

SurgeonProceduresSpecialties
Dr. Brian Nickel 246 Hip, Knee
Dr. David Hennessy 233 Hip, Knee
Dr. Richard Illgen 189 Hip, Knee
Dr. Rajit Chakravarty 133 Hip, Knee
Dr. Scott Anderson 112 Hip, Knee, Shoulder
Dr. Andrew Livermore 109 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.

Cite This Data

APA: OrthoProcedures. (2026). Dr. Erik Kroger, MD -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/wi/dr-erik-kroger-madison.html

Link: https://orthoprocedures.com/surgeons/wi/dr-erik-kroger-madison.html

Data source: CMS Medicare Part B Provider Utilization & Payment Data. Full methodology | Open Data API

Important: Rankings are based solely on Medicare procedure volume and do not reflect quality of care, patient outcomes, or procedures covered by private insurance. This data represents approximately one-third to 40% of all joint replacement procedures nationwide. Always consult with healthcare providers to make informed decisions about your care.