Andrew D. Ly, MD

New Patients

Andrew D. Ly, MD



  • Hoag Physician Partners


  • Vietnamese,
  • Spanish

About Dr. Ly

Dr. Ly earned his medical degree from Chicago Medical School. He completed his neurology residency at Los Angeles General Hospital–University of Southern California Medical Center and completed a neurophysiology fellowship at USC University Hospital.

Dr. Ly directs the Neurophysiology and Epilepsy testing services at Hoag Hospital and brings an integrated approach to field epilepsy and seizure disorders. He works with a multidisciplinary team at the Hoag Epilepsy Center to provide an individualized comprehensive plan to the evaluation, diagnosis, and medical and surgical treatments of epilepsy.

Dr. Ly also provides extensive experience and expertise in the area of neurodiagnostic testing. This includes electromyelography and nerve conduction studies (EMG/NCS) for the diagnosis and treatment of nerve and muscle disorders. In addition, he leads a team in providing Intraoperative Monitoring (IOM) services during spine and brain surgeries to preserve and minimize neurological damage after surgery.

Dr. Ly has served as a delegate for the American Academy of Neurology’s Neurology on the Hill in Washington D.C., which afforded him the opportunity to develop working relationships with members of Congress and fellow neurologists.

Dr. Ly also donates his professional talent to charitable organizations and has provided services to local community health clinics. He is a member of many professional associations including American Academy of Neurology, Association of California Neurologists and the American Medical Association.

He has participated in many research studies including investigational device and medication trials for seizures. He has been an active researcher involved in clinical trials in neuromuscular diseases including neuropathy and myasthenia gravis.

Dr. Ly is a diplomate of the American Board of Psychiatry and Neurology. He currently serves as a member of a Neurohospitalist team available for identification and evaluation of acute neurological disorders at Hoag Hospital.


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National Provider ID (NPI): 1801093554


  • Medical Education - Rosalind Franklin (Chicago) Medical School (Medical Doctor)
  • Internship - Advocate Luthern General Hospital (Internal Medicine)
  • Residency - University of Southern California Med. Center-LAC (Neurology)
  • Fellowship - University of Southern California - Keck School of Medicine (Neurology)

Board Certification

  • American Board of Psychiatry & Neurology - Neurology


  • Hoag Physician Partners

Area of Focus

  • Neurology