Carolina Complete Psychiatry | Providers
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Our Providers




Rachel L. Holzhauer, PA-C


Rachel believes in a collaborative approach to treatment, so she is committed to find an individualized plan for each patient. Her goal is to find a treatment approach that best fits with where the patient is at, understanding that medications may not be the right fit for everyone. Rachel completed both her Bachelor of Science and Master of Science in Physician Assistant Studies at Philadelphia University. Once completing school, she became a nationally board certified physician assistant and licensed to practice medicine by the North Carolina Medical Board. Rachel relocated to the Charlotte area and started working on an inpatient psychiatric unit. While she enjoyed being a part of the hospital team, Rachel also found she enjoyed practicing on the outpatient unit as she get’s to spend more time building a relationship with each patient. She has experience working with behavioral health patient’s that are inpatient, outpatient, in intensive outpatient programs, and for emergency psychiatric evaluations. As a provider that believes all systems are linked, mentally and physically, she enjoys keeping up-to-date in all areas of medicine. Rachel also believes in the importance of ongoing education and for this reason precepts physician assistant students from several universities.

Colleen Cunningham, PA-C


Colleen (Cavanagh) Cunningham is a graduate of Wingate University’s Physician Assistant program and is excited to begin at Carolina Complete Psychiatry. She attended the University of Notre Dame for her undergraduate studies, obtaining a Bachelor of Arts in Psychology. She has always had a great interest in psychology and psychiatry, as through her undergraduate classes, she realized how closely intertwined these fields are with every other aspect of life. She is looking forward to working with patients to create treatment plans specifically directed to their individual concerns. Colleen enjoys getting to know her patients and talking with them about their needs in order to fully understand what she can do better their mental and overall health. She is excited to take new patients and to create relationships with those coming to Carolina Complete Psychiatry for care.

Theresa I. Frederick, PA-C


Theresa Isabella Frederick graduated from Wingate University with a Masters degree in Physician Assistant Studies. She attended the honors program at Florida State University where she obtained a bachelor’s degree in Interdisciplinary Medical Studies. She grew up in Raleigh, but always hoped to move to the lively and exciting city of Charlotte. In her spare time, she enjoys trying new cuisines, traveling the world, spending time with friends and family, reading a New York Times bestseller, or fostering animals for the local humane society. Theresa has always believed in the importance of mental health, but it was not until her clinical rotations at Carolina Complete Psychiatry that she discovered this area of medicine is truly a passion of hers. By treating all forms of mental illness, she believes her patients can lead a more fulfilling life in every sense. Theresa is looking forward to establishing care with new patients of all ages, and working together to create a care plan to best fit their goals. She is accepting patients of all ages at this time.

We are proud to be able to offer new patient appointments typically within a week