Connect Now John R Klein, MD Specialty Clinics Biography Contact Info: Office:  520-290-0961 Biography: Dr. Klein is board certified in Orthopedic Surgery. He was raised in Tucson, AZ. Dr. Klein attended the Medical College of Wisconsin, and did his residency at Maimonides Medical Center in Brooklyn, NY. He completed a sports fellowship in Redwood City, CA. and did additional training in advanced orthocopic shoulder surgery in San Antonio, TX. He is fluent in Spanish. Dr. Klein has been practicing since 1996 and in Tucson since 2004.