DR. GREGORY LYNN CLARK M.D. NPI 1225141823

NPI Information

  • NPI: 1225141823
  • Provider Name: DR. GREGORY LYNN CLARK, M.D.
  • Classification: Psychiatry & Neurology - 2084S0012X
  • Specialization: Sleep Medicine
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 11790 SW BARNES RD
    SUITE 330
    PORTLAND, OR
    ZIP 97225
  • Phone: (503) 228-4414

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NPI Details

DR. Gregory Lynn Clark, M.D. is a sleep medicine psychiatry neurology in Portland, OR. The provider is a Psychiatrist or Neurologist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders. DR. Gregory Lynn Clark, M.D. NPI is 1225141823. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

11790 SW BARNES RD
SUITE 330
PORTLAND, OR
ZIP 97225-934
Phone: (503) 228-4414

The NPI 1225141823 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.

The enumeration date for this NPI number is 8/16/2006 and was last updated on 3/10/2014.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1174400000XSpecialistOR MD18493OREGONNo
2174400000XSpecialistWA MD00035294WASHINGTONNo
32084S0012XPsychiatry & NeurologySleep MedicineMD18493OREGONYes

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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