21st Century Neurology is the clinical division of Xenoscience, Inc., a diversified research and development corporation headquartered in Phoenix, Arizona.

  • Mary Timm, Chief Executive Officer
  • Stephen Flitman, MD - Medical Director: Neurologist - Specializing in Memory Disorders
  • Kathleen Callahan, PA-C -- Consultant in Neurology
  • Shannon Murphy, PA-C -- Consultant in Neurology

  • Practice Manager: Nancy Skok-Hill

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21st Century Neurology, a division of Xenoscience