Public Medicare data rankings · Illinois

Top 25 Shoulder Replacement Surgeons in Illinois

1,420 verified Medicare cases Updated May 2026

Rankings reflect Medicare procedure volume, one factor among many. Volume does not measure quality of care.

How to read these rankings

Medicare data is the "tip of the iceberg." A surgeon with 100+ Medicare cases likely performs 300–400+ total surgeries a year. High numbers guarantee experience; low numbers may simply indicate a surgeon sees younger, privately insured patients.

Shoulder Replacement anatomy illustration
Shoulder replacement recovery kit Slings, cold therapy, and adaptive clothing for recovery
25 surgeons
1

Gregory Nicholson

Chicago, IL
Shoulder Replacement: 90 verified Medicare cases
2

Jay Keener, MD

Saint Louis, MO
Also practices here via Herrin Hospital
Shoulder Replacement: 85 verified Medicare cases
3

Aaron Bare

Warrenville, IL
Shoulder Replacement: 77 verified Medicare cases
4

Paul Perry, M.D.

Evansville, IN
Also practices here via Wabash General Hospital
Shoulder Replacement: 71 verified Medicare cases
5

Rolando Izquierdo

Algonquin, IL
Shoulder Replacement: 70 verified Medicare cases
6

Robert Thorsness

Joliet, IL
Shoulder Replacement: 70 verified Medicare cases
7

Alexander Aleem, MD

Saint Louis, MO
Also practices here via Community Hospital Of Staunton
Shoulder Replacement: 67 verified Medicare cases
8

Grant Garrigues

Chicago, IL
Shoulder Replacement: 66 verified Medicare cases
9

Benjamin Zmistowski, MD

Saint Louis, MO
Also practices here via Sparta Community Hospital
Shoulder Replacement: 64 verified Medicare cases
10

Brent Johnson

Peoria, IL
Shoulder Replacement: 57 verified Medicare cases
11

Matthew Saltzman, MD

Seattle, WA
Also practices here via Northwestern Memorial Hospital
Shoulder Replacement: 57 verified Medicare cases
12

Michael Merkley

Peoria, IL
Shoulder Replacement: 53 verified Medicare cases
13

Scott Trenhaile

Rockford, IL
Shoulder Replacement: 53 verified Medicare cases
14

Miguel Ramirez

Peoria, IL
Shoulder Replacement: 53 verified Medicare cases
15

Guido Marra

Chicago, IL
Shoulder Replacement: 51 verified Medicare cases
16

David Tapscott, M.D.

East Providence, RI
Also practices here via Taylorville Memorial Hospital
Shoulder Replacement: 50 verified Medicare cases
17

Melissa Wright, MD

Saint Louis, MO
Also practices here via Ssm Health St Mary'S Hospital -Centralia
Shoulder Replacement: 48 verified Medicare cases
18

Douglas Lowery, M.D.

Newburgh, IN
Also practices here via Hamilton Memorial Hospital
Shoulder Replacement: 48 verified Medicare cases
19

Craig Cummins

Barrington, IL
Shoulder Replacement: 47 verified Medicare cases
20

Asheesh Bedi, MD

Ann Arbor, MI
Also practices here via Endeavor Health Clinical Operations
Shoulder Replacement: 47 verified Medicare cases
21

Kevin Kohut

Springfield, IL
Shoulder Replacement: 40 verified Medicare cases
22

Marc Asselmeier

Glen Ellyn, IL
Shoulder Replacement: 39 verified Medicare cases
23

Lewis Shi

Chicago, IL
Shoulder Replacement: 39 verified Medicare cases
24

Treg Brown

Herrin, IL
Shoulder Replacement: 39 verified Medicare cases
25

Nickolas Garbis

Maywood, IL
Shoulder Replacement: 39 verified Medicare cases

Important Disclaimer

Rankings are based solely on Medicare shoulder replacement procedure volume and do not reflect quality of care, patient outcomes, or procedures covered by private insurance. This data covers approximately 29% to 37% of all shoulder replacement procedures performed nationwide in 2024 (how this share is derived). Always consult with healthcare providers to make informed decisions about your care.