Administrative Staff

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Usman Mirza, Chief Executive Officer

Usman Mirza


Chief Executive Officer

umirza@tsaog.com 
Chris Kean, Chief Operating Officer

Chris Kean


Chief Operating Officer 

ckean@tsaog.com
Ronald Bullock, Clinical Services Manager

Ronald Bullock


Director of Clinical and Ambulatory Services

rbullock@tsaog.com 
Carrie Miller, Director of Professional Reimbursement

Carrie Miller


Director of Professional Reimbursement

clmiller@tsaog.com 
Rose Casarez

Rose Casarez


Director of OrthoNow

rcasarez@tsaog.com 

Greg Guetzloe


Director of Human Resources

gguetzloe@tsaog.com 
John Urban, Patient Services Manager

John Urban


Patient Services Manager

jurban@tsaog.com
Taylor Bowles

Taylor Bowles


Hospital Orthopaedic Services Director

tbowles@tsaog.com 
Kevin Dennis

Kevin Dennis


Hospital Orthopaedic Services Director

kdennis@tsaog.com