Merhdad Razavi, MD
Medical Director

Mehrdad Razavi, MD, is a sleep medicine specialist, visionary and Medical Director of Innovative Sleep Centers. He is board certified by the American Board of Psychiatry, Neurology, and Sleep Medicine. His 25 years of medical experience include 20 years in neurology and 15 years in sleep medicine. After finishing his medical training in Vienna, Austria, Dr. Razavi did his clinical training and was on medical faculty at the department of neurology of both the University of Iowa, Iowa City, IA, and Creighton University in Omaha, NE, before moving to private practice.   He enjoys providing comprehensive care to patients who suffer from a wide range of sleep disorders and improve their quality of life.  To raise awareness and educate the community, he was a featured national speaker and Medical Director of the Academy of Clinical Sleep Disorders Disciplines (ACSDD), a national inter-disciplinary sleep organization. He established his own independent practice, Innovative Sleep Centers (ISC) in 2010.

Board-Certified: American Board of Psychiatry and Neurology, Sleep Medicine
Fellowship: Behavioral Neurology, University of Iowa
Residency: Neurology, University of Iowa
Internship: Marshfield Clinic, University of Wisconsin
MD: University of Vienna School of Medicine, Vienna, Austria

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Chris Cheng, MD
Co-Medical Director

Dr. Cheng is triple-boarded in Neurology, Sleep Medicine, and Clinical Neurophysiology. Dr. Cheng graduated magna cum laude from UCLA, then received his MD with Latin honors from the State University of New York. Dr. Cheng then completed his Neurology Residency at NYU where he served as chief resident, and received the Resident Teacher of the Year award. Dr. Cheng completed a fellowship in Clinical Neurophysiology at UCLA Medical Center, and then completed a second fellowship in Sleep Medicine at Stanford Hospital & Clinics.

Dr. Cheng is devoted to excellent patient care, and sees the practice of neurology as an enormous privilege rather than something deserved. Having had the diversity of medical training along both coasts in some of the finest medical institutions, Dr. Cheng is capable of working with diverse patient backgrounds.  During his free time, Dr. Cheng loves to travel and hike with his wife who is a travel writer, run and play tennis, and spend time with his family.

Board-Certified: Neurology, Sleep Medicine, Clinical Neurophysiology
Fellowship-Training: Sleep Medicine, Stanford University, Palo Alto, CA
Fellowship-Training: Clinical & Intraoperative Neurophysiology, UCLA, Los Angeles, CA
Residency-Training: New York University School of Medicine, New York, NY
Medical School: State University of New York, Downstate College of Medicine, Brooklyn, NY.  

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Harrison Detroja, ARNP, FNP

Prior to receiving his Nurse Practitioner degree from Eastern KY University, Harrison was educated and worked as a mechanical engineer.  He relocated to Washington and has been in healthcare since 2003 including his work as a primary care provider in Chehalis for 3 years prior to joining ISC.  He is passionate and persistent about improving all his patients' sleep health.

He enjoys the outdoors, hiking and spending time with family.



Stacy Frazer, PA-C

Stacy believes there is nothing more important than the quality of one’s sleep in regards to their overall health and well-being.  After graduating from the UC Davis PA program in 2011, she has worked locally in primary care for the last 7 years.  Her passion for health, wellness and physical fitness is evident in her care for her patients.  She’s an avid road cyclist and currently an ambassador for a cycling company.  Stacy grew up in agriculture in the north state and has a small farm raising dairy goats, chickens and pigs.



Kathleen Chesney, PA-C

Kathleen's bio is coming soon.  We are very excited to welcome her to our Redding clinic!

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Erin McPeak, PA-C

Erin’s bio is coming soon.  We are very excited to welcome her to our Chehalis clinic!

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Heather Armbrust, ARNP

Heather’s bio is coming soon.  We are very excited to welcome her to our Aberdeen clinic!