Horizons Healthcare has been in business since 2006. Our goal is to provide comprehensive care in our Snellville office or the patient’s own living environment. Our nurse practitioners manage acute and chronic medical conditions through comprehensive history taking, physical exams, and the ordering of diagnostic tests and medical treatments. Our nurse practitioners also specialize in geriatric psychiatry, assessing and treating mood disorders, confusion, and behavioral disturbances that often accompany dementia.


A nurse practitioner (NP) is a registered nurse (RN) who has completed advanced coursework and clinical education (a minimum of a master’s degree) in the diagnosis and management of medical conditions, including chronic illnesses. The core philosophy of the NP field is individualized care. Nurse Practitioners focus on patients’ conditions as well as the effects of illness on the lives of the patients and their families. If prescriptions are needed, NPs in the state of Georgia are able to prescribe and manage medications.

Patricia Gray-Smith


Nurse Practitioner Patricia Gray-Smith has over twenty-five years of nursing experience. She received her Master’s degree in Nursing and her Post Master’s Certificate in Family Health from Stony Brook University of New York. Patricia provides both primary care and geriatric psychiatry to her patients and is committed to caring for the most vulnerable populations. Her passion lies with older adults, especially those with dementia. And as such, her goal is to provide health care in the patient’s own familiar setting.

Paul E. Allen, MD

Horizons Healthcare Physician

Dr. Paul Allen is a physician specializing in internal medicine. Additionally, Dr. Allen has over 25 years of experience in the emergency room. Dr. Allen received his medical degree from State University of New York and completed his residencies at Harlem Hospital Center and Bergen Pines County Hospital. He sees patients ages 16 and up for primary care in our Snellville office. He also performs sports physicals for patients 13 and up.

Nicole Moncrieffe


Nicole Moncrieffe is a nurse practitioner who has extensive nursing experience which includes care of adults across their lifespan. Her focus includes physical/wellness exams and assessments, acute and minor care, and treatment of chronic health issues. One of her passions is working with older adults to help manage their chronic diseases and to educate both the patients and their caregivers regarding their specific healthcare needs. Nicole received her Post Master’s Certification in Family Health from the University of Arizona.