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Meet our Staff

Steven Mortazavi, M.D. is the Medical Director of Valley Pain Specialists. After completing his residency in Anesthesiology at Hershey Medical Center, Dr. Mortazavi completed a Pain Management and Palliative Care Fellowship. He received his medical degree from State University of New York Health Science Center at Syracuse and is Board certified in Anesthesiology and Pain Management by the American Board of Anesthesiology.
Allen Kao, M.D. completed his undergraduate degree in Biology and Economics from the University of Chicago. He subsequently completed his medical school training at the University of Illinois. He then completed his residency in Physical Medicine and Rehabilitation at Temple University and subsequently completed additional training in interventional pain managmement in Harrisburg, PA. He is Board eligible by the American Board of Physical Medicine and Rehabilitation.
Marissa Marion PA-C received her Bachelor degree in Biology from Ramapo College of New Jersey. She subsequently completed her Physician Assistant Masters Degree in a joint program with University of Medicine and Dentistry of New Jersey.

Ashley Zimmerman PA-C received her Bachelor of Science degree in Physician Assistant Studies from Philidelphia University graduating summa cum laude. She subsequently completed her Physician Assistant Masters Degree at Philadelphia University.