Dr. Peter Mulhern is talented, experienced and precise; qualities which continue to underline his skills as an adept orthopaedic surgeon.  Dr. Peter Mulhern has narrowed his practice focus on total joint replacement, particularly as it pertains to the shoulder, hip and knee. 
https://doctor.webmd.com/doctor/peter-mulhern-md-c797f9a8-5c8f-4196-86f1-c640e186b656-overview
https://www.doximity.com/pub/peter-mulhern-md