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Meet Our Team


Leah Walker, PT

Leah graduated from St. Louis University in 1992 with a degree in physical therapy. She has experience in a variety of settings including acute care, home health, and pediatrics before coming to outpatient orthopedics in 2001. Leah is certified in dry needling technique. She has a special interest in pitching injuries and women’s health. In her spare time, Leah enjoys cooking, traveling, and camping with her husband and daughter.


Jeff Wortzel, PT, DPT

Jeff Wortzel graduated with a master degree in physical therapy from Northern Arizona University in 1996 and completed his doctorate of physical therapy from AT Still University in 2012. He has practiced in a variety of settings in Arizona and New Mexico including orthopedics, neurologic rehabilitation, long term care, critical care, and wound care. Currently he specializes in spine and extremity rehabilitation. Jeff mentors several physical therapy interns each year. Outside of work he enjoys chasing his identical twin boys, playing soccer, mountain and road cycling, and completing “honey-do” lists around the house. Jeff is a native Tucsonan.


Edith “Edy” Yee, Physical Therapist, Doctorate in Physical Therapy (PT, DPT)

Edy has been working as an orthopedic physical therapist since 2002. She has experience working in sports, spine, and general orthopedics. She holds a Master of Science degree in Exercise Physiology from the University of Arizona and a Clinical Doctorate in Physical Therapy from Duke University. She is a certified manual therapist through the International Academy of Orthopedic Medicine (IAOM) and is also certified in dry needling technique. . Edy has been an avid cyclist and runner for much of her life and has pursued sports-related continuing education including bike fitting and training specifically for high level athletes.She competes in several road and mountain bike events, triathlons, and marathons.


Krystal McKinney, PT, DPT

Krystal was born and raised in St. Charles, Missouri. She attended Missouri State University where she received a Bachelor’s of Science degree in Exercise and Movement Science in 2010. From there she found herself in Glendale, Arizona attending Midwestern University’s Doctor of Physical Therapy program. She graduated with her DPT in 2013 and moved to Tucson, Arizona to join the team at Carondelet St. Joseph’s Hospital. Krystal specializes in the evaluation and treatment of neck and back orthopedic injuries and persistent pain. She enjoys attending continuing education courses regarding orthopedic physical therapy, manual therapy, and persistent pain. During Krystal’s free time, she enjoys hiking, running, and spending time with friends and family. Even though she has been in Arizona since 2010 she is still a St. Louis girl at heart, go Cardinals!


Dena Roblee, Physical Therapist Assistant (PTA)

Dena Roblee moved from Michigan in 2008 to join Carondelet’s rehabilitation team.. She is a PT assistant, certified in the state of Arizona with 16 years of experience. She also has national certification as a Massage Therapist with 7 years of related experience. Areas of expertise and interests are in the treatment of spinal injuries and working with clients with chronic and complex pain syndromes. Dena likes to spend her free time hiking, reading, off-roading, gardening, and painting.


Jaime Arrieta, MPH, Spine Center Navigator

Jaime Arrieta grew up in Tucson and received his degree from the University of Arizona in Community Health Education Public Health. In addition, he is a Certified Community Health Education Specialist (CHES). Jaime brings over 10 years of program development experience to Carondelet. In the past, his programing and curriculum projects have been awarded “Best Practice” by the Arizona Department of Health Services. He spends his free time mountain biking, hiking, rock climbing / mountaineering, sailing, and traveling.


Diana Gonzalez, Office Coordinator (bilingual, Spanish and English)

Diana has been working for Carondelet since 1995, starting in the Behavioral Health department, and transitioning to the Human Resources department. In 2003, she was hired by outpatient rehabilitation services as lead office coordinator and is in charge of managing the Spine Center front office. Diana has a strong customer service focus and provides a variety of support functions for the Spine Center. Raised in Nogales, Sonora Mexico, Diana loves spending time with her family and enjoys hiking and listening to music.


Kristen Johnson

Kristen attended John Carroll University in Ohio where she received her Bachelor's and Master's in Business Administration. After practicing as a CPA for 7 years she decided that physical therapy was her true calling. She received her Doctorate in Physical Therapy from A.T. Still University in Mesa, AZ in 2010 and started her new career specializing in treatment of neurological disorders. She joined the Carondelet team in 2015 and is using her neurological experience to treat vestibular disorders and spinal conditions. Kristen moved to Arizona in 2003 from Cleveland, Ohio so that she could enjoy hiking, backpacking, cycling and running year round. She also enjoys traveling and yoga.


Xavier Vazquez

Xavier is a native Tucsonan. He attended the University of Arizona where he was a cheerleader for 4 years, and graduated with a bachelor’s degree in physiology in 2013. He joined the Spine Center team in May, 2015 as a technician and plans to apply to occupational and physical therapy schools. On his off time Xavier likes to visit with his family and hike in the Tucson Mountains. He also enjoys coaching an adult Special Olympics softball team. He has previously worked for the Division of Developmental Disabilities and in behavioral health.