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Edit this profileAt a glance
- 11790 Sw Barnes Rd, Suite 330, Portland, OR 97225
About Dr. Clark
Based in Portland, OR, Gregory L. Clark, M.D. is listed in the NPI registry under sleep medicine (neurology). Gregory is also listed as specializing in specialist. NPI 1225141823 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (503) 228-4414
- Email not available
Practice Locations
11790 SW BARNES RD SUITE 330
Portland, OR 97225
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of doctor is Gregory L. Clark?
Gregory L. Clark is a sleep medicine (neurology) in Portland, OR. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Gregory L. Clark's address?
Gregory L. Clark is listed at 11790 Sw Barnes Rd Suite 330, Portland, OR 97225. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Gregory L. Clark?
The number on file is (503) 228-4414. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Gregory L. Clark?
Gregory L. Clark's National Provider Identifier is 1225141823. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Gregory L. Clark have?
Gregory L. Clark has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Is Gregory L. Clark's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Gregory L. Clark. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.