Shrink Savannah employs a talented team of mental health professionals in Savannah, Georgia. Led by Savannah psychiatrist, Dr. Chad Brock, our team's exceptional and diverse backgrounds offer patients many options for treatment and care.

We welcome your questions to help you select the appropriate provider for your needs. 


Chad Brock, MD


Board Certified in General Psychiatry. Special areas of interest include treating mood and anxiety disorders, adult ADD, bariatrics and addiction. 

A native of Oklahoma City, OK, Dr. Brock graduated from Oklahoma State University and the University of Oklahoma College of Medicine. He completed his psychiatry residence at the Medical University of South Carolina.


Dr. Brock has been practicing psychiatry in Savannah for 17 years and has earned accolades as the "Best of the Best" from the Savannah Morning News and "Best Psychiatrist in Savannah" from Savannah Magazine readers.  


Lydia Stearns, PA-C

Physician Assistant

Ms. Stearns is a transplant from Maine with roots in Savannah.  After graduating with a Bachelor of Arts degree in Biology from Taylor University, Ms. Stearns attended South University and gained a Master of Science in Physicians Assistant Studies.  She is currently a certified Physician Assistant who focuses on psychiatry and behavioral medicine.


Ms. Stearns in a member of the Georgia Association of Physician Assistants and American Academy of Physician Assistants.  Her other passions include, spending time with her husband and daughters, playing the piano and baking pies.


Paige Marnell, MD

Dr. Paige Marnell is a board certified psychiatrist, specializing in the treatment of addictive disease. She completed her residency at the University of Chicago and fellowship training in addiction psychiatry from the University of Texas Southwestern. She has been in practice for 10 years.

Dr. Marnell is passionate about educating physicians in-training and serving as a community advocate for the expansion of addiction treatment in the Savannah area.


Born and raised in Denver, Colorado, Dr. Marnell and her family moved to Savannah in 2020. She enjoys hiking, boating, drinking copious amounts of coffee, yoga and meditation.


Andrea Yates, PA-C
Physician Assistant

Prior to beginning her Physician Assistant career, Andrea worked as an inpatient and outpatient dietitian at Candler hospital and the Lewis Cancer and Research Pavilion. Andrea went on to earn her Masters in Physician Assistant Studies from South University and is a licensed Physician Assistant in Georgia. She has nearly 3 years of experience in The Urgent Care setting and now focuses on psychiatry and behavioral medicine.


Andrea is a member of the Georgia Association of Physician Assistants and American Academy of Physician Assistants. In her free time, she enjoys spending time with her two children and husband, running, and being on the water.


Kristy Triplett, PA-C

Physician Assistant

A native of Savannah, Kristy Gierke Triplett is a graduate of St. Vincent's Academy. After graduating with a Bachelor of Science degree in Biology from Georgia Southern University, she went on to earn her Masters in Physician Assistant Studies from South University and is a licensed Physician Assistant in Georgia whose focus is on the psychiatric and behavioral medicine field.


Kristy is a member of the Georgia Association of Physician Assistants and American Academy of Physician Assistants. In her free time, she enjoys traveling and spending time on the water.


Calysta Tilley, PA-C
Physician Assistant

Ms. Tilley joined the Shrink Savannah team in 2021 after beginning her behavioral health career working in both in-patient and out-patient public facilities in the greater Savannah area. 

She is a graduate of the Physician Assistant program at Augusta University.


Anna Hilliard, PA-C
Physician Assistant

Ms. Hilliard originally joined the Shrink Savannah team working in the administrative office after graduating from the University of Alabama in 2019. Upon completion of her Masters in Physician Assistant Studies, she re-joins the Shrink Savannah team as a PA.


Heather Mell, NP-C
Nurse Practitioner

Heather (Martin) Mell joined the Shrink Savannah team in early 2020. A graduate of the Georgia Southern University School of Nursing, Ms. Mell has practiced in Charleston, SC and Savannah. She says the most rewarding part of patient care is being able to give patients hope again by having the ability to offer innovative treatment options.


Margaret Wheble, LCSW

Margaret is a Licensed Clinical Social Worker who works with children, families and adults. She focuses on issues related to depression, anxiety, bereavement, communication struggles, life event stressors and behavioral issues.


She uses various treatment modalities that best fit the client and include techniques derived from Play Therapy, Cognitive Behavioral Therapy, Solution Focused Therapy and Dialectical Behavioral Therapy.


A Savannah native, Margaret attended Florida State University in Tallahassee, Florida where she completed her undergraduate studies and received her degree in Social Work.

Clients:  Ages 5+


Chene Walz, LPC, CCMHC

Chene is passionate about the journey of psychotherapy with a diverse adult population. She received her graduate degree in counseling from Vanderbilt University and undergraduate in psychology from the University of Georgia.


Practicing for more than 20 years, her approach to therapy is person centered, holistic and informed by multicultural competence. Areas of clinical interest include trauma, anxiety, depression/bipolar, as well as working with artists and gender and sexual minorities. Chene is trained in EMDR and mind-body based interventions.


She enjoys nature, yoga, and music as well as the journey of being a parent.


Mary Hubbard, LMHC

Mary is a Licensed Mental Health Clinician, and former Level 1 Licensed Alcohol and Drug Counselor. Mary received her Masters of Education in Counseling Psychology, with a focus on Substance Abuse, from Cambridge College in Boston, MA.


She was the Director of a residential program that helped individuals gain independence and life skills to live out in the community. Mary also worked at a women’s shelter, and on the detoxification unit at St. Elizabeth’s Hospital in Boston, before going into private practice. With 20 years of clinical experience, Mary has worked with a diverse population and is able to draw from various treatment modalities.


Areas of clinical interest include mood disorders, trauma, interpersonal issues, and addiction. Mary strongly believes in the therapeutic relationship and its role in the healing and growth process. Mary enjoys time in the sun, mom life, and is a passionate advocate for Type 1 Diabetes Awareness.