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oconnellCatherine O’Connell, Ph.D.
Dr. O’Connell has been in private practice in Phoenix since 1979. She specializes in the areas of medical psychology and the treatment of chronic pain, neuropsychology, and presurgical evaluations for pain procedures and bariatric surgery. She conducts classes and facilitates support groups for the Bridges Center, and is a preferred provider for presurgical psychological evaluations for the Bridges Center. Dr. O’Connell provides psychotherapy for patients with medical disorders and patients considering or undergoing surgical procedures. Dr. O’Connell has taught at the university level and remains on the Arizona State University faculty as an adjunct professor. She has coordinated both inpatient and outpatient pain programs and has served as a practice management consultant in both private practice and hospital settings. She has served on numerous hospital committees and currently is a member of the Medical Executive Committee of St. Luke’s Behavioral Health Center. She serves as a mental health consultant to the Maricopa County Superior Court. She is a diplomat of the American Academy of Pain Management and sits on the national board of the Academy. She is also a member of American Psychological Association and is listed in the National Register of Health Providers in Psychology.



Kevin Olin, Ph.D.
Dr. Olin is a licensed clinical psychologist and certified school psychologist in Arizona. He received his Master’s Degree from California State University, San Bernardino and his Doctoral degree from Alliant University, Fresno, California. Dr. Olin strongly supports an integrative medicine philosophy in treating individuals. His theoretical orientations are a cognitive-behavioral and solution focused approach to therapy. Dr. Olin is a general clinical psychologist who has been specializing in providing psychological services to bariatric patients for the past 10 years.

Being health conscious himself, Dr. Olin promotes healthy lifestyle choices, regular exercise, proper nutrition and goal setting. He believes in focusing on individual’s internal and external resources and strengths, while educating and teaching healthy adaptive coping skills. This type of process fosters emotional and psychological stability, being well adjusted, improving quality of life and having overall lifelong success and fulfillment.

In his spare time, Dr. Olin enjoys playing tennis, running, weight training, watching movies and spending time with his family.


walkerJohn R. Walker III, Psy.D.
Dr. Walker is a clinical neuropsychologist who specializes in neuropsychological evaluation, independent medical evaluations, pre-surgical evaluation and psychotherapy with patients with medical and neurological disorders. He conducts classes and facilitates support groups for the Bridges Center, and is a preferred provider for pre-surgical psychological evaluations for the Bridges Center. He is board certified in clinical neuropsychology and has reached diplomate status recognized by the American Board of Clinical Neuropsychology. Dr. Walker is a full member of the American Academy of Clinical Neuropsychology and a professional member of the National Academy of Neuropsychology. Dr. Walker graduated from Arizona State University. He completed his doctoral training at the Arizona School of Professional Psychology followed by internship and residency in clinical neuropsychology at Gentiva Rehab Without Walls. Dr. Walker is licensed to practice in Arizona and Iowa.

St. Luke's Medical Center
Mountain Vista Medical Center
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Please note: Results are not 100% guaranteed and may vary from one person to another.