About Dr. Gregory Clark
Dr. Gregory Clark is a sleep medicine physician at Pacific Sleep Program in Portland, OR.
Where Dr. Clark practices
11790 SW Barnes Road, Suite 330, Portland, OR 97225
(503) 228-4414
Clinic rated 4.3 from 93 Google reviews
Other sleep physicians at Pacific Sleep Program
Questions about Dr. Gregory Clark
Where does Dr. Gregory Clark practice?
Dr. Gregory Clark is listed at Pacific Sleep Program (Portland, OR). Call the clinic to confirm before you book.
How do I make an appointment with Dr. Gregory Clark?
Call Pacific Sleep Program at (503) 228-4414 and ask for Dr. Clark. Ask whether you need a referral and whether your insurance is accepted.
What does Dr. Gregory Clark specialize in?
Dr. Gregory Clark specializes in sleep medicine. Sleep medicine physicians diagnose and treat conditions such as sleep apnea, insomnia, narcolepsy, and restless legs syndrome.
From the NPI registry (data through November 2, 2026) and Medicare's Doctors and Clinicians directory (released November 12, 2026). These are records physicians and clinics keep with the government, and they can lag behind changes. They do not show board certification. Are you Dr. Gregory Clark, or is something here out of date? Let us know. Find a sleep doctor near you.