Dr. Aaron Baessler, M.D.

Orthopedic Surgery

12 procedures5 hospitalsFishers, INUpdated May 2026

Contact & Location

800-622-6575
Phone: 800-622-6575
Practice phone listed in the NPI registry
14300 E 138th Ste B
Fishers, IN 46037
Current practice address per the CMS NPPES registry (self-reported to the registry, last updated December 2025). Registry checked August 2026.
Other locations registered to this NPI:
625 S Main St Ste 200
Zionsville, IN 46077
Additional practice sites listed in the surgeon's own CMS NPPES registry entry. The registry does not record which site a surgeon primarily works from, so call ahead to confirm where an appointment takes place.
NPI: 1912389560
Credentials: M.D.
Active Medicare provider (NPI verified)
11 years of practice experience
Licensed M.D.
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps
National Comparison by Procedure
Shoulder 12 vs 29 national avg 0.4x
avg

Compared with 2,217 shoulder surgeons in the 2024 Medicare dataset.

Dr. Baessler performs more shoulder replacement procedures than 5% of orthopedic surgeons in Indiana, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #65 of 69 ranked shoulder surgeons in Indiana.

About Dr. Baessler

Practice. Dr. Aaron Baessler is a board-certified orthopedic surgeon practicing in Fishers, Indiana. The latest annual CMS data records 12 shoulder replacements. That is #65 in Indiana for shoulder replacement. A Medicare provider since 2015.

Trend. Medicare records run from 2021 to 2024, 4 years. Volume peaked at 21 in 2021 and stands at 12 now. Reporting changes and payer mix can both move that number.

National context. Among 2,217 shoulder replacement surgeons tracked nationally, 12 procedures is below the national average of 29. Medicare covers part of all joint replacements, so true volume is likely higher.

Local context. Fishers has 4 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.

Verified Medicare Cases

Shoulder Replacement
12 verified cases
#65 in Indiana
Estimated 2024 total: 30 – 40 procedures (all insurers)
Medicare fee-for-service share of national volume in 2024: 29% to 37% for shoulder replacement
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 29% to 37% for shoulder 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. Baessler Compares

Procedure volume compared to the Indiana state average.

Shoulder Below Avg
12 Avg: 23
Dr. Baessler Indiana Average

Volume Trend Analysis

Dr. Baessler's recorded volume peaked at 21 procedures in 2021 and stood at 12 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.

Years of Data 4
2024 Volume 12
Peak Volume 21 (2021)
Trend Declining

Hospital Affiliations & Quality

H
Ascension St Vincent Anderson
2/5
Anderson, IN
Similar to national avg
H
Ascension St Vincent Fishers
Fishers, IN
Similar to national avg
H
Community Hospital Of Anderson And Madison County
4/5
Anderson, IN
Similar to national avg
H
Indiana University Health
2/5
Indianapolis, IN
Similar to national avg
H
Indiana University Health Ball Memorial Hospital
3/5
Muncie, IN
Similar to national avg

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 Shoulder Replacement

If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:

Shoulder Replacement Recovery Overview

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

Week 1-3 Arm in a sling for protection. Gentle pendulum exercises under therapist guidance. Focus on pain management and wound care.
Week 4-6 Gradual sling weaning. Begin passive and active-assisted range-of-motion exercises. Light daily activities resume.
Week 7-12 Active range-of-motion exercises. Light strengthening begins. Most patients can drive and perform desk work.
Month 4-6 Progressive strengthening continues. Return to most activities. Full recovery may take 6-12 months for complete shoulder strength.

Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations

Frequently Asked Questions About Dr. Baessler

How does Dr. Baessler's procedure volume compare to other Indiana surgeons?

Dr. Baessler has performed 12 Medicare-verified joint replacement procedures. The Indiana average is 60 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Baessler ranks #220 out of 224 orthopedic surgeons in Indiana.

What types of joint replacement does Dr. Baessler perform?

Dr. Baessler's reported Medicare volume is focused on shoulder replacement, with 12 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.

Are there other orthopedic surgeons near Dr. Baessler in Fishers?

Yes. There are 4 orthopedic surgeons in Fishers 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 Indiana surgeons.

What does the Medicare data for Dr. Baessler 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 29% to 37% for shoulder replacement, which puts Dr. Baessler's total volume across all insurers at roughly 30 to 40 procedures against the 12 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. Baessler's procedure volume changed over time?

Dr. Baessler's Medicare-recorded volume peaked at 21 procedures in 2021 and was 12 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.

Which hospitals is Dr. Baessler affiliated with?

According to CMS facility affiliation data, Dr. Baessler is affiliated with Ascension St Vincent Anderson, Ascension St Vincent Fishers, Community Hospital Of Anderson And Madison County, Indiana University Health, Indiana University Health Ball Memorial Hospital.

How does Dr. Baessler compare to other orthopedic surgeons in Fishers?

Among the 4 orthopedic surgeons in Fishers, Dr. Baessler ranks #4 by total Medicare procedure volume. The highest-volume surgeon in Fishers has 83 verified Medicare procedures.

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

Ascension St Vincent Anderson (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Ascension St Vincent Fishers (hip/knee complication rate similar to national average); Community Hospital Of Anderson And Madison County (4 out of 5 CMS stars, hip/knee complication rate similar to national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.

Other Orthopedic Surgeons in Fishers, Indiana

Dr. Baessler's 12 Medicare procedures are below the Fishers average of 57. The table below compares verified procedure volumes for orthopedic surgeons practicing in Fishers.

SurgeonProceduresSpecialties
Dr. Brian Badman 83 Shoulder
Dr. Leonard Buller 75 Hip, Knee
Dr. Kevin Sonn 59 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. Aaron Baessler, M.D. -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/in/dr-aaron-baessler-fishers.html

Link: https://orthoprocedures.com/surgeons/in/dr-aaron-baessler-fishers.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.