Our Clinical Staff

Our Clinical Staff
Our General Services
Forensic Psychiatry Services
Treatment Resistant Depression Clinic
TRD Clinic Referral Form
Transcranial Magnetic Stimulation (TMS)
Genetic Testing
ADHD Assessment
Neuropsychiatric EEG-Based Assessment
Insurance Plans
Office Policies
Press & Resources Links
New Patient Paperwork
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Thomas W. McCormack, M.D.


Medical Director and founder of Athens Behavioral Medicine, Dr. McCormack is a native Georgian and graduate of Emory University School of Medicine. He held an appointment as Clinical Professor in the Dept. of Psychiatry at Emory from 2003-2010, and he currently holds the same position at the new medical school in Athens, the MCG/ UGA Health Partnership through Augusta University. Over his six-year tenure at Duke University School of Medicine, he completed a residency in General Psychiatry and then sought subspecialty training, completing fellowships in both Forensic Psychiatry and Child & Adolescent Psychiatry, where he served as Chief Resident. He earned his undergraduate degree Magna Cum Laude from Wake Forest University and high school diploma from Marist School in Atlanta.

Dr. McCormack is one of only five physicians in the state to be awarded board certifications in General Adult Psychiatry, Child & Adolescent Psychiatry, and Forensic Psychiatry. Additionally, Dr. McCormack is certified to administer two highly-effective non-medical procedures for treatment resistant depression (TRD): Transcranial Magnetic Stimulation (TMS) and Electroconvulsive Therapy (ECT). 

Dr. McCormack specializes in Treatment Resistant Depression (TRD), ADHD, Forensic psychiatry, Child and Adolescent bipolar/ depression/ anxiety/ OCD/ tic disorders/ eating disorders, behavioral disorders of childhood, and general adult psychiatric practice. Dr. McCormack strongly believes in utilizing psychotherapy along with conservative medical treatments when clinically warranted.

Dr. McCormack lives in Athens with his wife and three children. He is an active member of Beech Haven Baptist Church, where he serves as Vice Chairman of Deacons, 3rd Grade Sunday School Teacher, Personnel Committee member, and Usher. From 2012-2014 he served as Chairman of the Pastor Search Committee following the retirement of Dr. Stewart Simms. Dr. Mack's hobbies and interests include his children, religion/ philosophy, fossil shark tooth collecting, SCUBA diving, kayaking, world travel, & coaching youth baseball and basketball. His patience and long-suffering have been proven by the fact he is an avid fan of Atlanta Braves baseball, UGA football, & Wake Forest basketball.

Lauren Willis, PA-C

Lauren Willis is a certified Physician Assistant originally from Macon, Georgia. She earned a B.S. in Biology from the University of Georgia in 2010. To gain additional medical experience before PA school, Lauren then spent 2 years working as a tech in the Emergency Department at Athens Regional Medical Center. She then entered the PA program at Mercer University, where she earned her Masters of Medical Science in 2014. Upon graduation, Lauren returned to the Emergency Department at Athens Regional to work as a Physician Assistant. In 2016 Lauren decided to follow her passion for the field of Psychiatry and join the team at ABM, where she now provides mental health evaluations, medication management, and brief supportive psychotherapy to children & adults under the supervision of Dr. Thomas McCormack.

Lauren is certified by the NCCPA and is also a member of Georgia Association of Physician Assistants and the American Academy of Physician Assistants. 

Lauren lives in Athens with her husband Justin, son Paxton, daughter Collins, and two dogs. She enjoys playing golf, attending concerts, cheering on the Georgia Bulldogs (especially in football) and spending time with her family. 

Rhonda Winters, FNP-C

Rhonda Winters is a certified Nurse Practitioner originally from Forsyth, Georgia.

She attended Auburn University for core courses and played basketball for the Lady Tigers. She then earned her B.S. in Nursing from the Medical College of Georgia in 1986 and worked in Labor and Delivery as an RN before deciding to return to school at Georgia College and State University, where she earned her Masters of Nursing in 2001. Since graduation, she has worked in Orthopedics, Sleep Medicine, Internal Medicine, and Urology. In 2018, Rhonda decided to join the team at ABM because Psychiatry has been an interest of hers since her work in Internal Medicine. She became aware that it was often difficult to find adequate mental health resources for her patients and endeavored to pursue work in Psychiatry to help meet needs in our community. She provides mental health evaluations, medical management, and brief supportive psychotherapy to children and adults under the supervision of Dr. Thomas McCormack.

Rhonda is certified by the ANCC and is also a member of the American Nurses Association and Sigma Theta Tau.

Rhonda lives in Athens with her husband, Butch. They have three children—Lauren, Trippe, and Peyton. Her biggest joy is spending time with her grandchildren, Paxton and Collins. She also enjoys photography, golf, basketball and cheering for the Auburn Tigers! (“Sorry Dawg fans, but since all of my children graduated from UGA, I do consider myself a part time fan!”).
Elizabeth Estes, R.N.
Elizabeth Estes has a distinguished career as a psychiatric nurse, serving in a number of different settings. She has worked as Charge Nurse of Pediatric Psychiatry Unit at Charter Winds Hospital and as an outpatient Pediatric Psychiatry Nurse at Advantage Behavioral Health Systems in the past and currently at ABM.  While her experience is extensive, it is her genuine caring and compassionate nature that sets her apart and makes her beloved by our patients.
"Nurse Ede" assists Dr. McCormack in the care of his patients by fielding clinically related telephone calls,  monitoring the physical status of patients (vital signs, height, weight, BMI, etc.), and administering intramuscular Ketamine injections for Treatment Resistant Depression (TRD) & long-acting depot medication injections as needed.

Rita Macari, MA, LPC


Rita Macari is a Licensed Professional Counselor, who earned her BA in Studio Art from The State University of New York/Queens College and an MA in Psychology/Counseling from The State University of West Georgia. Rita trained in "Heartcentered Hypnotherapy" at the Wellness Institute in Seattle, Washington, additionally completing their two year intensive program focusing on humanistic, holistic, and existential modalities. Rita has been an advanced EMDR practitioner for over a decade with extensive experience in PTSD and traumatic stress. She also trained under John Gray, the author of "Men Are From Mars, Women are from Venus" and worked as a facilitator for Dr. Gray's workshops for Gwinette Habitat for Humanity.

Her practice experience includes, but is not limited to, individual psychotherapy, couples and family therapy, Post-traumatic stress disorder, ADHD, OCD, depression, stress and panic attacks, grief issues, substance dependency, abuse and recovery. She especially enjoys working with seniors and is involved with Olli, an organization for ongoing learning for adults 50+. Rita is registered with "Care For Our Troops," offering trauma counseling for various members of our armed forces, and she considers it an honor to work with United States Veterans.  Additionally, Rita offers a variety of therapies for parents and caregivers. "Our children live in the present; worry exists in the future. Stress-free parents raise stress-free children."

Rita was widowed in 2007 after 35 years of marriage. Although she is a native New Yorker, Rita has lived in the South since 1996 and considers herself "a bit Southernized." She credits her love for her two granddaughters for bringing her to Athens.  "These are the happiest days of my life."

Blaine Everson, LMFT, PhD 

Dr. Everson joined ABM after working with several other practices around Georgia. He has extensive experience in faith-based counseling throughout his career of over 20 years. 

After relocating from the Fraser Center on the Georgia coast, he worked as a family therapist with Samaritan Center of Counseling & Wellness, where he most recently served as Clinical Director. Specialty areas include traumatic stress, secondary stress reactions in families, child & adolescent behavior and mood disorders, couple therapy, and family therapy focused on emotional and physical conditions. Dr. Everson has been licensed as a marriage and family therapist in Georgia since 1995. Additionally, he has advanced training in Imago couple therapy and has been a level II EMDR practitioner for over 10 years.



Dr. Everson has held numerous part-time and adjunct faculty positions, most recently in the Dept of Human Developm

ent and Family Sciences at the University of Georgia. He has also been involved in research and writing about stressors associated with military lifestyles and has published several journal articles and book chapters over the past few years. He recently edited and co-authored 


Under Fire: Systemic Therapy With Military Families.


He is married to Denise and they have one daughter, Eliza. Dr. Everson and his family are active members of St. Gregory the Great Episcopal Church, and he enjoys spending time with his wife and daughter, traveling, flying, and fishing.

Maureen Killeen, PhD, CNS
Dr. Killeen is a psychiatric clinical nurse specialist, board-certified in adult mental health psychiatric nursing.  Dr. Killeen graduated from D'Youville College School of nursing in Buffalo, New York, and earned a master's degree in psychiatric mental health nursing at Emory University.  Dr. Killeen earned a Ph.D. in Child and Family development from the University of Georgia and also received postdoctoral training in child and adolescent assessment and therapy from the clinical psychology and school psychology programs at the University of Georgia.  Additionally, she received further postdoctoral training in mental health research methods at the University of Georgia and Harvard University graduate school of education.
Dr. Killeen has over 35 years experience in psychiatric nursing education and practice.  She is Professor Emerita in the Medical College of Georgia School of Nursing and School of graduate studies, Adjunct Associate Professor of clinical psychology and a Fellow in the Institute for Behavioral Research at the University of Georgia.  Dr. Killeen has also been named the Angela Barron McBride visiting professor of psychiatric nursing at Indiana University school of nursing for 2008 -2009.

Dr. Killeen provides mental health evaluations of adults as well as medication management for adults under the supervision of Dr. Thomas McCormack. She lives in Athens with her husband.

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