Quality Treatments by Skilled Professionals

Helping patients find relief from headaches and other neurological conditions is our goal and mission at Parkside Medical Group of Upland, CA. Our team will work with you to identify the cause of your condition, and to select the most effective treatment plan possible.

Mohsen Ali, M.D.

Founder of Parkside Medical Group.


Dr. Mohsen Ali graduated from Damascus University School of Medicine and completed his training in Neurology at Tulane Medical School in New Orleans. Dr. Mohsen Ali is certified by the American Board of Psychiatry and Neurology. He started practicing Neurology in 1979 in San Dimas, CA.


He is an active member of several area hospitals, including:

  • Foothills Presbyterian Hospital
  • Intercommunity Medical Center
  • Queen of the Valley Hospital
  • San Antonio Regional Medical Center
  • San Dimas Hospital

His office is equipped to provide various tests, including:

  • Botox Injections (Migraines and Other Conditions)
  • Electroencephalogram (EEG)
  • Electromyogram and Nerve Conductive Studies (EMG)

His office performs Trigger Point injections and special procedures for treating difficult cases of migraines and cluster headaches. Dr. Hohsen Ali’s experience, education, and knowledge assures patients that they are in highly qualified hands.

William S. Baek, M.D.

Dr. William S. Baek is a triple board-certified neurologist. He graduated from the Seoul National University College of Medicine in 1999 and completed his Neurology residency at the University of Chicago, along with a fellowship in Clinical Neurophysiology at UC San Diego, in 2006.


He completed an NIH post doctorate research fellowship at the Children’s Hospital in Philadelphia.


He has served on or with:

  • AQ/Peer Review Committee Member at the Kaiser Fontana Medical Center
  • Clerksup Directors Consortium, Ethics Section of the AAN
  • Donald M. Palatucci Advocacy Leadership Forum member of the Class of 2014
  • HealthConnect EMR Champion
  • Internal Medical Residency Program Faculty Member
  • Member of AANEM
  • Neurology Clerkship Director
  • Primary Stroke Center Medical Director
  • UM at Beaver Medical Group

He was the official bilingual moderator for the 2009 AOCCN, IFCN, in Seoul, S. Korea. He is on the Editorial Board for the Journal of Neurology and Neuroscience and the JSM Alzheimer’s Disease and Related Dementia.


He has over 25 publications, almost all as the sole author.


As a certified interpreter for Korean and Spanish, English, and Spanish.


Dr. Baek provides Clinical Neurophysiology services (EEG, EMG, EP) as well as Botox injections.

Rajan Chopra, M.D.

Dr. Rajan Chopra is a board certified neurologist with a specialty in headache medicine. He earned his undergraduate degree from the University of California at Irvine, and his medical degree from the Saba University School of Medicine.

His medical internship and neurology residency was completed at the West Virginia University School of Medicine in Morgantown, WV.


After completing his studies, he has worked in private practices, focused on headaches.


Dr. Rajan Chopra is a member of the American Academy of Neurology and the American Headache Society. He attends annual society meeting to stay current with modalities of care in headache medicine.

He provides a variety of treatments, including:

  • Botox
  • Medications
  • Naturopathic Treatments
  • Nerve Blocks
  • Trigger Point Injections