Our Providers

W. Ronald Gaertner, M.D.,L.F.A.P.A.,A.B.A.M.

Dr. Gaertner formed Gaertner Psychiatric PC in 2013 to provide outpatient psychiatric services in Fredericksburg and Richmond, Virginia and inpatient services at Snowden at Fredericksburg, affiliated with Mary Washington Hospital in Fredericksburg.  Since 2007 he has been the Medical Director at Snowden and for Behavioral Health Services at Mary Washington Hospital.  Previously he served as the Behavioral Health Services Regional Director for Bon Secours Richmond Health System and the Medical Director for Outpatient Substance Abuse for VCU Health Systems, MCV Physicians in Richmond.

Dr. Gaertner completed his medical degree at Louisiana State School of Medicine and his psychiatric residency at Ochsner Clinic in New Orleans, LA.  He also completed a fellowship in the study of autistic disorders.  Dr. Gaertner is board certified in both psychiatry and addictionology.


Rajalla Prewitt, M.D.

prewitt pic

Dr. Prewitt is a board certified adult, child and adolescent psychiatrist with over 15 years of experience in various clinical settings including inpatient mental health facilities and outpatient consultation and treatment services. She received her medical degree from the Ohio State University School of Medicine and completed her adult residency training at the University of Cincinnati and fellowship training in Child and Adolescent Psychiatry at Children’s Hospital of Cincinnati, where she served as chief fellow. She began her professional career with the Center for Family Guidance in New Jersey and held various administrative positions as the Women’s Medical Director and Adolescent Medical Director at Friends Hospital in Philadelphia as well as the Medical Director of Behavioral Health at the South Jersey Healthcare System. She currently serves as a staff psychiatrist at Snowden at Fredericksburg and Mary Washington Hospital and also provides outpatient medication management treatment for adults, children and adolescent patients at the Gaertner Psychiatric office in Fredericksburg.

She enjoys spending time with her family, hiking and training for the next half marathon.

Elizabeth Wheatley, D.N.P.,F.N.P.-C., P.M.H.N.P.-B.C .

Eliz Wheatley pic

Dr. Wheatley has over 38 years experience in healthcare and has nurse practitioner practice experience in family practice as well as in psychiatric care. She earned a Bachelors Degree from Florida State University and a Masters in Human Relations from Liberty University.  She has also earned a Masters in Nursing and Post Masters certificate from the University of Virginia. She is board certified as a Family Nurse Practitioner through the American Association of Nurse Practitioners (AANP) and Family Psychiatric/Mental Health Nurse Practitioner through American Nurses Credentialing Center (ANCC). She further earned her Doctor of Nursing degree from University of South Alabama with a doctoral project entitled “Assessment for Post-traumatic Stress Disorder (PTSD): Diagnosis, Interventions, and Length of Stay Quality Improvement Initiative.”

Dr. Wheatley’s mental health practice includes an interest in individual experience and impact of trauma as well as religious education and support services related to trauma impact and support. Her practice philosophy is a partnership with patients from a holistic perspective. This includes medical, psychosocial, and spiritual elements as needed by individual patients.

Professional memberships include: Sigma Theta Tau, Beta Kappa Chapter; American Association of Nurse Practitioners; Virginia Council of Nurse Practitioners; and International Society for Traumatic Stress Studies.

Dr. Wheatley provides both inpatient services at Snowden at Fredericksburg and outpatient services at the Gaertner Psychiatric office in Fredericksburg.

Outside her nurse practitioner responsibilities, she enjoys time with her family, gardening, fishing, and assorted creative activities.

Joshua Carter, MS, PA-C

Mr. Carter graduated magna cum laude from University of Mount Olive (UMO) in Mt. Olive, North Carolina with a degree in Exercise Science and a minor in Biology. During his time at UMO he received numerous accolades for academics and athletics, including achieving All-American credentials.  He received his medical training from Lincoln Memorial University – Debusk College of Osteopathic Medicine (LMU-DCOM) in Harrogate, Tennessee where he graduated magna cum laude. He is board certified by the National Commission on Certification of Physician Assistants, and is currently eligible for his PA Psychiatric Certification.  Prior to joining Gaertner Psychiatric he worked in an outpatient clinic under the supervision of a practicing psychiatrist to provide psychopharmacology recommendations to the clinic’s most complex patients. In that setting he also provided an introductory style counseling for couples and individuals.  He has also worked at multiple inpatient psychiatric facilities across Virginia and North Carolina. He enjoys working with all types of mental health challenges, but holds special interests in post traumatic stress disorder, bipolar disorders, personality disorders, forensic psychiatry, psychopharmacology, sport psychology, and addiction medicine. In addition to psychiatry he has worked at multiple medical facilities as a hospitalist and continues his work to become board certified in hospital medicine.

Mr. Carter provides inpatient services at Mary Washington Hospital and outpatient services in the Gaertner Psychiatric Clinic in Fredericksburg.

Emily Torres FNP

Ms. Torres is a Board-Certified Family Nurse Practitioner.  She entered into the mental health field in 2001 working with children in a residential facility.  She completed her nursing degree in 2005.  Ms. Torres continued to serve the mental health community in various capacities including as a case manager, care coordinator, charge nurse and nurse educator.  She completed her Bachelors of Science of Nursing in 2017, graduating Summa Cum Laude from Capella University.  Most recently, Ms. Torres finished her Masters of Science in Nursing from Simmons University, and joined Sigma Theta Tau International Honor Society in Nursing.  Ms. Torres will be seeing both inpatients and outpatients for Gaertner Psychiatric, PC in Fredericksburg.

In her free time, she enjoys trail hiking participating competitive running venues.

Henna Habib PA-C  (Outpatient only)

Ms. Habib is a 2015 graduate from Temple University in Philadelphia, receiving her Bachelors of Science in Kinesiology. She completed her Masters in Physician Assistant Studies at Chatham University in Pittsburgh in 2017. In addition to specializing in outpatient psychiatry for two years, her clinical experience includes pediatrics, internal medicine, emergency medicine, and surgery. At Gaertner Psychiatry, she provides outpatient services and specializes in medication management for all age groups, including children, adolescents, and adults.  She will be treating outpatients in the Fredericksburg office.

She is married with one newborn son. In her spare time, she enjoys spending time with her husband, family, and friends. 


Vicki McKay, N.P.

VICKI MCKAY 9-4-2015

Ms. McKay graduated from nursing school in 1982 and was awarded her master’s degree from Catholic University in 1989 with majors in Nursing Education and Pediatrics. She has been a pediatric nurse practitioner for 25 years. She graduated from Rush University in 2008 with a post-masters certification as a family psychiatric nurse practitioner and has practiced exclusively in psychiatry since then. In 2009 she received a second post masters degree as a Clinical Nurse Specialist in psychiatry.

Ms. McKay has experience in the diagnosis and medication management of children,adolescents and adults needing evaluation and treatment for mental health concerns. Ms. McKay only sees patients at Mary Washington Hospital (Snowden).

Guerlyne Henson, N.P.     

Ms. Henson is a family nurse practitioner who specializes in treating patients in both inpatient and outpatient settings. She is from Queens, NY, and completed her undergraduate degree in Charlotte, N.C at Queens University.  She then went to Walden University in Minneapolis, MN where she graduated as a family nurse practitioner.  She worked as a nurse practitioner in Richmond, VA with the veteran population managing chronic disease processes.  She currently provides inpatient services to psychiatric inpatients at the Snowden facility and performs History and Physical exams for patients being admitted to the psychiatric facility. Ms. Henson is a lifelong learner and is always eager to learn new skills while incorporating a holistic approach to integrate behavioral and medical health management.

Ms. Henson is married with 4 children.  When she is not working, she enjoys listening to audio books while exercising then watching a good lifetime movie, SYFY, or binging on Netflix.

Auryana Malek FNP

Ms. Malek graduated from George Washington University with her Master of Nursing as a Family Nurse Practitioner. She has experience in critical care and Post Anesthesia Care Unit as a Registered Nurse. She specializes in pain management.  Ms. Malek will be working with inpatient care only at Snowden at Fredericksburg and Mary Washington Hospital.

Sreeja Jayakumar FNP 2

Ms.Jayakumar is a board certified family nurse practitioner who has over 15 years of experience in health care field. She completed her Bachelors degree in Nursing from Medical College, India and her Masters in Nursing from South University in Savannah, GA, specializing in family medicine. She is devoted to providing continuing and comprehensive healthcare to patients in a hospital setting. She believes it is important to empower the patient with knowledge and management of their condition. She works at Snowden at Fredericksburg for inpatient care only.
Ms. Jayakumar likes to spend her spare time traveling, hiking, and spending time with family and friends.

Sue Duke, M.S.N.,A.N.P.


Ms. Duke is an Adult Nurse Practitioner with over 30 years of psychiatric experience.  Upon receiving her Bachelors Degree in Nursing from VCU and her Registered Nurse certification, she cared for patients in a variety of psychiatric inpatient and outpatient settings before obtaining her Masters Degree in Nursing from James Madison University in 2009.   As a nurse practitioner in a Richmond psychiatric office for five years, she independently managed a range of mental health conditions, including mood, anxiety and psychotic disorders.   Before joining Gaertner Psychiatric, she worked on the inpatient psychiatric unit at VCU Medical Center, specializing in acute schizophrenia management.  Her primary interests include mood, anxiety and psychotic disorders.  She uses a holistic approach to integrate behavioral and medical health treatment concerns.   Ms. Duke sees outpatients in the Richmond office.

She enjoys camping, hiking, kayaking and reading historical biographies as well as spending time with her two granddogs, Ellie and Nacho.