GC
36 Years of Experience
Accepting patients
Who is Dr. Clark, Sleep Medicine Specialist - Psychiatrist & Neurologist in Portland, OR?
Dr. Gregory Clark, MD is a Sleep Medicine Specialist - Psychiatrist & Neurologist, who primarily practices in Portland, OR with 1 additional practice location. He has been practicing for over 36 years and is board certified. Dr. Clark is fluent in English, and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Clark’s office at (503) 228-4414.
Where did Dr. Clark go to medical school and complete their residency?
Medical School: University of Maryland At Baltimore / Professional Schools
Is Dr. Clark board certified as a Sleep Medicine Specialist - Psychiatrist & Neurologist?
Yes, Dr. Gregory Clark, MD is board certified by the American Board of Psychiatry and Neurology
What languages does Dr. Clark speak?
Dr. Clark and their clinical team can communicate with patients in the following languages:
English
What procedures does a Sleep Medicine Specialist - Psychiatrist & Neurologist like Dr. Clark typically perform?
As a Sleep Medicine Specialist - Psychiatrist & Neurologist, procedures performed by Dr. Gregory Clark may include:
- Continuous Positive Airway Pressure Management
- Narcolepsy Evaluation
- Sleep Consultation
- Sleep Medicine Consultation
- Sleep Medicine Follow Up
- Sleep Studies
Please contact Dr. Clark's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Clark accept my insurance?
Please contact Dr. Clark's office to confirm accepted insurance plans.
Where is Dr. Clark's office located?
Dr. Gregory Clark's Primary Practice
11790 SW Barnes Rd Ste 330
Portland, OR 97225
(503) 228-4414
What is Dr. Clark's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Clark's National Provider Identifier (NPI) number is 1225141823.
What common questions do patients ask about Dr. Clark?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Clark
What is Dr. Gregory Clark's specialty?
Dr. Clark is a Sleep Medicine Specialist - Psychiatrist & Neurologist near Portland, OR.
What does a Sleep Medicine Specialist - Psychiatrist & Neurologist do?
A psychiatrist or neurologist practicing Sleep Medicine is certified in this subspecialty and focuses on the clinical assessment, physiological testing, diagnosis, management, and prevention of sleep and circadian rhythm disorders. Sleep specialists care for patients of all ages and adopt multidisciplinary approaches to treatment. They manage a wide range of conditions, including sleep-related breathing disorders, insomnia, hypersomnia's, circadian rhythm sleep disorders, parasomnias, and sleep-related movement disorders.
Is this Dr. Gregory Clark affiliated with a ranked Castle Connolly Top Hospital?
No, Clark is not affiliated with a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Sleep Medicine Specialist - Psychiatrist & Neurologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Sleep Medicine Specialist - Psychiatrist & Neurologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Gregory Clark accepting new patients in Portland, OR?
Yes, Dr. Gregory Clark is accepting new patients at this time.
Does Dr. Gregory Clark offer online booking?
Please contact Dr. Clark's office at (503) 228-4414 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Gregory Clark?
Please contact Dr. Clark's office at (503) 228-4414 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Gregory Clark have?
Dr. Gregory Clark is certified by the American Board of Psychiatry and Neurology.
Other Sleep Medicine Specialist - Psychiatrist & Neurologist Near Portland, OR

Sleep Medicine Specialist - Psychiatrist & Neurologist
Dr. Gerald Rich, MD is a Sleep Medicine Specialist - Psychiatrist & Neurologist, who primarily practices in Portland, OR.
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OO
Sleep Medicine Specialist - Psychiatrist & Neurologist
Dr. Olukayode Ogunrinde, MD is a Sleep Medicine Specialist - Psychiatrist & Neurologist, who primarily practices in Clackamas, OR with 2 additional practice locations. He is board certified.
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KH
Neurologist
Dr. Kimberly Hutchison, MD is a Neurologist, who primarily practices in Portland, OR with 2 additional practice locations.
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