Our Providers

All professionals at BG Neurology maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in medicine. Read on to learn more about our staff's experience and training.

Bogdan P Gheorghiu, MD

He is certified by the American Board of Psychiatry and Neurology - Neurology, American Academy of Pain Management, Americain Society of Neuroimaging-Neurovascular Ultrasound, and the American Board of Psychiatry and Neurology-Neuromuscular Medicine. He graduated from Medical School -Columbia University College of Physicians & Surgeons in New York, New York in 1992. He pursued his post-graduate studies in Neurology through his residency at Mount Sinai Medical Center where he was appointed chief resident. He gained fellowship status in Clinical Neurophysiology with the Department of Neurology at North Shore University Hospital. Along with his extensive education, he has been the Principal Investigator in state-of-the-art neuroscience clinical trials. 

According to patient reviews, Dr. Gheorghiu was given the following awards:

  • Patients' Choice Award (2018, 2017, 2015, 2016)
  • Compassionate Doctor Recognition (2018, 2017, 2015, 2016)
  • Top 10 Doctor - South Carolina (2014)
  • On-Time Doctor Award (2018, 2015)

Roxanne Singer-Gheorghiu, DNP, AGPCNP-BC, AGNP-C, PMHNP -BC, CDES, CCRC

Dr. Singer  is a dually boarded, certified Adult-Gerontology Primary Care Nurse Practitioner and as a Psychiatric Mental Health Nurse Practitioner. She completed her advanced practice training at Duke University Medical Center School of Nursing. Her BSN was earned at State University of New York Stony Brook where she was admitted to Sigma Theta Tau, the International Honor Society of Nurses. She completed her doctoral studies with advanced training in psychopharmacology integrated with psychotherapy. Her clinical practice and interests are focused on mental health, research, disorders of cognition, prevention, and advocacy.

Dr. Singer has a passion to help those diagnosed with dementia, as well as their families and caregivers. She has supported the Spartanburg, SC chapter of the Alzheimer’s Association for over 20 years and is currently pioneering research programs for new treatments for Alzheimer’s disease and other types of dementia. Her role as the Director of our Telemedicine and Memory Care programs at BG Neurology, LLC, includes devoting her time to educating health care practitioners, the community, and our legislative representatives. This education is focused around the multidimensional care necessitated by the disease process, caregiver assessment, risk factors, and genetic implications.

Health care advocacy is not just limited to dementia. As a certified diabetes educator and program director of our peripheral neuropathy clinic, she has been the South Carolina Coordinating Body Advocacy Leader for the American Association of Diabetes Educators and has a seat on the Diabetes Advisory Council of South Carolina. Often times you will see her lobbying for access to health care for South Carolina as she speaks for those in need.


  • Duke Center of Geriatric Nursing Excellence
  • Alzheimer's Impact Movement
  • American Association of Nurse Practicioners
  • American Academy of Pain Management
  • International Honor Society of Nursing
  • Association of Clinical Research Professionals
  • International Society of Nurse Geneticists
  • South Carolina Neurological Association
  • South Carolina Childhood Obesity Task Force
  • National Fibromyalgia Association
  • Neuroscience Education Institute

See Roxanne's professional portfolio here


Ashley N. McKinney, MSN, APRN, FNP-C

As a life-long resident of the Upstate, Ashley began her nursing journey at the University of South Carolina – Spartanburg where she earned a Bachelor of Science degree in Nursing. She earned an advanced degree from Spring Arbor University and is a board-certified Family Nurse Practitioner. During her 20 years as a Registered Nurse, Ashley has filled several vital roles in a variety of settings. She has served as a critical care nurse in the neurological intensive care unit, a clinical research nurse, nurse navigator, and perioperative nurse at Spartanburg Regional Medical Center. In the outpatient Neurology setting, Ashley served as an infusion nurse, research coordinator, a multiple sclerosis certified nurse, and a patient education facilitator for numerous pharmaceutical companies.

With 15 years neurology experience, Ashley is prepared for and passionate about her role in providing excellent patient care. “When facing a new diagnosis or managing a chronic illness, life can feel overwhelming and frightening,” she said. “I am honored to help patients and families understand the diagnosis and overcome their fears through education and support. It is a privilege to work with Dr. Gheorghiu and care for patients within our community.”


  • South Carolina Board of Nursing
  • APRN, FNP-C from the American Academy of Nurse Practitioners
  • Multiple Sclerosis Certified Nurse (MSCN)

Professional Affiliations

  • American Academy of Nurse Practitioners (AANP)
  • Academy of Oncology Nurse & Patient Navigators