Agyare Antwi, Psychiatric Mental Health Nurse Practitioner. Agyare is also a Board-Certified Psychiatric Nurse Practitioner. He is a provider that is motivated, compassionate and dedicated to helping those with mental health disorders. He wants to understand your goals to help create a plan, so that he can help you achieve your mental health goals. Agyare specializes in PTSD and treats a variety of psychiatric diagnoses.