Savannah, GA

Meridian's Savannah, GA (Neurology), location performs clinical studies related to disorders of the nervous system. Typical studies at this site explore medicines developed to treat migraines, Alzheimer's disease, multiple sclerosis, seizures, epilepsy, and other conditions.

Neurology is a field of medicine that specializes in disorders and diseases of the brain. The disorders we treat can be congenital (from birth) in nature, directly related to an accident or illness, or a result of advancing age. It is the goal of Savannah Neurology Specialists to provide the highest level of care to patients in a professional and friendly environment.

Savannah Neurology Specialists serves in all areas of neurology for adults as well as children, with areas of focus including, but are not limited to:

  • Headaches and Migraines
  • Epilepsy
  • Multiple Sclerosis
  • MRI
  • Alzheimer's Disease
  • Parkinson's Disease
  • Strokes
  • Treatment of Muscle Spasm Reduction, Spasticity and
  • Dystania with Botox and Baclofen Pump
  • Neurological Complications in Newborns
  • Attention Deficit/Hyperactivity Disorders
  • EEG Monitoring and Interpretation
  • Sleep disorders including Sleep Apnea

This office is very active in the field of neurology research and has numerous active studies.

Contact Information

Meridian Clinical Research
6602 Waters Avenue, Building C
Savannah, GA 31406

Phone: (912) 790-4837

Phone: (912) 443-4253

Meet the Physicians


Michael Hemphill, MD

Dr. Michael Hemphill graduated from Baylor College of Medicine and did his residency training in neurology at The Johns Hopkins Hospital, where he did a research fellowship in movement disorders and was Assistant Professor of Neurology. He studied bioethics as a Rockefeller Fellow at Harvard University and received an MBA from Emory University. He is Board Certified in Neurology with Special Qualification in Child Neurology and is a Fellow of the American Academy of Neurology.

Dr. Hemphill has written numerous journal articles, has received the Best Teacher of the Year award from the Department of Family Medicine at Memorial University Medical Center multiple times and has been listed in Best Doctors in the Southeast and Best Doctors in America. He is the principal investigator for multiple clinical research studies and speaks widely as an expert on multiple sclerosis, migraine, epilepsy, and therapeutic uses of botulinum toxin. He is a patient advocate for multiple sclerosis patients and is a member of the Board of Directors of the Georgia Chapter of the National MS Society.


Stephen N. Donahue, MD

Dr. Stephen N. Donahue attended The University of Georgia, where he earned a Bachelor of Science in Microbiology and completed his medical education at Mercer University School of Medicine in Macon, Georgia. He completed his internship and neurology residency at The University of Virginia in Charlottesville, Virginia followed by a fellowship in Neuromuscular Medicine at Duke University in Durham, North Carolina. Dr. Donahue is proficient in the diagnosis and management of a wide array of neurological disorders and has special interest in neuromuscular conditions such as Myasthenia Gravis, various myopathies, and peripheral neuropathies.

Dr. Donahue has expertise in the use of electromyography in the evaluation of peripheral nervous system and muscular disorders and is skilled in the use of Botulinum toxin for the treatment of dystonia, spasticity, and headache. Additionally, he is experienced in the diagnosis and management of stroke, various types of headaches, immunological conditions such as Multiple Sclerosis, and movement disorders such as Parkinson's Disease.


Katherine Moretz, MD

Dr. Katherine Moretz, a Savannah native, is a graduate of the University of Georgia where she earned a BS in Biology. She then attended the Medical College of Georgia School of Medicine, graduating with an MD in 2003. She completed her Pediatric Neurology Residency at the Medical College of Georgia in June 2008. She joined Savannah Neurology in October 2008. She specializes in the treatment of Pediatric and Adolescent patients.


Gilmore MacGregor, MD

Dr. Gilmore MacGregor grew up in Statesboro, GA. He graduated with honors from the University of Georgia, with a BS in Ecology. He received his MD from Mercer University, with honors in bioethics, and completed his clinical training here in Savannah at Memorial Health. He then went to the University of Alabama, Birmingham for his medical internship, neurology residency and clinical neurophysiology fellowship. At UAB, he received the Argus award for the most outstanding resident, and was the chief fellow of neurophysiology. He is board certified in both neurology and clinical neurophysiology by the American Board of Neurology and Psychiatry.

Dr. MacGregor is proficient in diagnosis and management across the full spectrum of neurological diseases in adults, including electro-diagnostic testing, Botox and other advanced treatments for migraine. He has special expertise in both epilepsy and neuro-muscular disorders such as myasthenia gravis and ALS.

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