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Office
1611 W Harrison St
Ste 400
Chicago, IL 60612Phone+1 312-243-4244Fax+1 312-942-1517
Education & Training
- Indiana Hand to Shoulder CenterFellowship, Hand Surgery (Orthopaedic Surgery), 1992 - 1993
- University of California (San Diego) Medical CenterResidency, Orthopaedic Surgery, 1987 - 1992
- University of California (San Diego) Medical CenterInternship, Transitional Year, 1986 - 1987
- Harvard Medical SchoolClass of 1986
Certifications & Licensure
- CA State Medical License 1987 - Present
- IL State Medical License 1993 - 2026
- FL State Medical License 2014 - 2016
- American Board of Orthopaedic Surgery Orthopaedic Surgery
- American Board of Orthopaedic Surgery Surgery of the Hand
Awards, Honors, & Recognition
- Regional Top Doctor Castle Connolly, 2014
- America's Top Doctors Castle Connolly, 2004-2014
- Chicago Magazine: Top Doctors Castle Connolly, 2004, 2006, 2008, 2010, 2012, 2014
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Publications & Presentations
PubMed
- 1 citationsThe incidence and decompression rates of median and ulnar neuropathies following shoulder surgery.Karan Dua, Omair Kazi, John Hoy, Brian Xu, Nikhil N Verma
JSES International. 2024-09-01 - 1 citationsTraction Tenolysis for Flexor Tendon Adhesions: Outcomes in 97 Patients.Farhan Ahmad, Ashlyn Fitch, Obianuju A Obioha, John J Fernandez, Mark S Cohen
The Journal of Hand Surgery. 2024-01-01 - Carpal Joint Malalignment With Distal Radius Malunion and Factors in Correction After Distal Radius Osteotomy.Michael Doarn, Brian Xu, Matthew Winterton, John J Fernandez, Mark S Cohen
Journal of Hand Surgery Global Online. 2023-11-01
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