Our Providers in Alphabetical Order

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Randy Beggs, Ph.D. 
Dr. Beggs works extensively with couples and individuals questioning or struggling with issues of sexual identity, compulsive sexual behavior, trauma, mood disorders, attachment disorders, dissociative disorders, male body image and end of life issues. He uses an integration of several therapeutic approaches in formulation of client issues and treatment plans. He is available during limited hours at ACCT. ​
​Charlie Davidson, Ph.D.
Dr. Davidson is our most recent associate and a director of Training at our Center. He has numerous publications and conducts research as a Post Doctoral Fellow at Emory University. He is currently providing psychotherapy on Saturdays at our Center.
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​John Endress, M.S., LPC
John Endress has 25 years experience in Mental Health working with adult clients. Specialties include all anxiety disorders (such as panic, phobias, and generalized anxiety), obsessive compulsive disorder, depression, bipolar disorder and chronic pain. His strong orientation toward cognitive-behavioral therapy is due to its high success rate and his own personal comfort with its collaborative, non-judgemental, problem-solving approach.
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Michele Endress, M.S., L.P.C.
Michele Endress has been with Atlanta Center for Cognitive Therapy for over 24 years and works with a broad crossection of mental health issues. She has experience working with Cognitive methods as well as being able to provide those who want emphasis on their religious values along with treatment. Michele works with individual and couples. ​
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Mark Gilson, Ph.D.
Dr. Gilson is the founder of the Atlanta Center, established in 1985. He is former faculty, Department of Psychiatry at the University of Pennsylvania Medical School's Center for Cognitive Therapy under the direction of Aaron T. Beck, M.D. He is a founding fellow for the Academy of Cognitive Therapy and is also board certified and Fellow of the American Board of Professional Psychology.  He has published professional articles and book chapters over the past 30 years. Dr. Gilson is current adjunct faculty member with Emory University Department of Psychiatry and Georgia State University Department of Psychology.  Along with his private practice that focuses on the treatment of depression, anxiety and stress disorders, he also directs Atlanta Center for Cognitive Therapy’s professional training and certification program that is approved by National Board of Certified Counselors and American Psychological Association since 1988 to offer continuing education to psychologists and professional counselors. ACCT maintains responsibility for its programs. He also has been producer and announcer for college, professional, and community radio, including “On Your Mind,” a program that focused on issues in mental health.

​Dr. Gilson collaborates with David Barlow, Ph.D., Aaron T. Beck, M.D., David Burns, M.D., Arthur Freeman, Ed.D., and Donald Meichenbaum, Ph.D. on a variety of training projects. A new client book with Dr. Art Freeman as co-author on Managing Depression is now in the works (to be published by Oxford University Press). 
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​D. Scott Greenaway, Ph.D.
Dr. Greenaway is one of our training directors for the CBT Certification Training Program. He is involved 
in coordinating the program and acts as a presenter and consultant to our student clinicians.  Dr. Greenaway obtained his Ph.D. in clinical psychology from the University of Texas Southwestern Medical Center (Dallas) and is licensed in Georgia and Florida.  Dr. Greenaway is board certified in Behavioral and Cognitive Psychology by the American Board of Professional Psychology (ABPP). He is licensed in Georgia and Florida, where he has a thriving private practice..
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Daniel Shapiro, Ph.D.
Dr. Shapiro is a clinical psychologist and Adjunct Professor of Psychology at Emory University.  He is one of our training directors for the CBT Certification Training Program and based in California. He is licensed in Georgia, Massachusetts, and California, however he no longer sees patients in Georgia.  Dr. Shapiro specializes in two major areas, relying heavily on growth- and resiliency-oriented cognitive-behavioral approaches, but emphasizing the importance and power of relationships in our lives.  First is the assessment and treatment in adolescents and adults of mood, anxiety, and trauma-related concerns.  Second is working with those with symptoms of psychosis or at-risk syndromes.  

Dr. Shapiro served as a fellow in Cognitive Therapy at the University of Pennsylvania with Aaron T. Beck, M.D., before joining the faculty in the Medical School at Harvard University.  He has published numerous scientific articles and book chapters on the  development, treatment, and prevention of mental health concerns, focusing in particular on the roles of stress and cognitive processes.   In addition to ACCT, Dr. Shapiro has also been involved in training programs for mental health practitioners in Philadelphia, in Massachusetts at Harvard University’s Beth Israel Deaconess Medical Center and the Massachusetts Mental Health Center, and currently within California Mental Health system.  ​He is based in California and does not see patients in Georgia.
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Sara Shepherd, Ph.D.
After many years working as a psychologist in university counseling centers, Dr. Shepherd turned to private practice, joining ACCT in 2009.  She has an undergraduate degree in Social Work from West Virginia University, a graduate degree from Indiana University of Pennsylvania, and her doctorate in Counseling Psychology from the University of Tennessee—Knoxville.  In addition, she received advanced training at the University of Illinois.  Dr. Shepherd is licensed in the state of Georgia.

Dr. Shepherd sees older adolescents and adults for individual psychotherapy.  Her professional interests include the treatment of eating disorders, women’s issues, anxiety, and depression.  She approaches therapy using primarily behavioral and cognitive techniques to provide both support and challenge to clients.  Dr. Shepherd is a member of the Academy of Eating Disorders. She has presented at several conferences, published articles, and conducted training sessions on the assessment and treatment of eating disorders and related clinical issues. Dr. Shepherd's website is www.sdsphdpsychologist.com.
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M. Jane Yates, Ph.D.
Dr. Yates is is a co-director and co-founder of The CBT Certification Training Program. She is also a Certified Psychoanalytic Therapist and outgoing President of Atlanta Psychoanalytic Society based at Emory University. She is co author of the Oxford University published books Overcoming Depression: A Cognitive Therapy Approach, including the therapist manual and patient workbook. She is a consultant at the Regional Office of Social Security Administration in Atlanta. ​