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DR. GREGORY LYNN CLARK M.D.
NPI 1225141823
Psychiatry & Neurology - Sleep Medicine in Portland, OR

Active since August 16, 2006PECOS Enrolled
11790 SW BARNES RD, SUITE 330, PORTLAND, OR 97225(503) 228-4414 Get Directions Write a Review

NPPES record last updated: March 10, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Gregory Lynn Clark M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY LYNN CLARK M.D. (NPI 1225141823) is an individual sleep medicine provider in Portland, Oregon, licensed in Oregon (MD18493) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1225141823
Entity TypeIndividualMale
Primary Taxonomy2084S0012X
Provider Legal NameDR. GREGORY LYNN CLARKCredential: M.D.
Location Address11790 SW BARNES RD, SUITE 330Portland, OR 97225-5934
Mailing Address11790 Sw Barnes Rd, Suite 330Portland, OR 97225-5934 · (503) 228-4414
Phone(503) 228-4414
Sole ProprietorNo
Enumeration DateAugust 16, 2006
Last NPPES UpdateMarch 10, 2014
✔ NPI 1225141823 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084S0012X
License✔ Licensed in OR · MD18493
Definition
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.
Also ListedSpecialistTaxonomy 174400000X · License OR MD18493 (OR), WA MD00035294 (WA)
11790 SW BARNES RD, Portland, OR 97225
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gregory Lynn Clark M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97225 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.16 typical visit price
range $58.99 – $176.88
Typical copayment $33.54 (range $14.74 – $44.22)
Most-billed visit code 99204
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PEDIATRIC URGENT CARE LLC
Clinic/Center (Urgent Care)
11790 SW BARNES RD, STE. 140
PORTLAND, OR 97225
Washington County (503) 643-2100
GERALD B RICH, MD, PC
Internal Medicine (Sleep Medicine)
11790 SW BARNES RD, SUITE 330
PORTLAND, OR 97225
Washington County (503) 228-4414
SLEEPMED OREGON, LLC
Clinic/Center (Sleep Disorder Diagnostic)
11790 SW BARNES RD, SUITE 330
PORTLAND, OR 97225
Washington County (503) 228-4414
NATURA FAMILY MEDICINE
Clinic/Center (Health Service)
11790 SW BARNES RD, SUITE 120
PORTLAND, OR 97225
Washington County (971) 317-0222
INTEGRATIVE PEDIATRICS LLC
Pediatrics
11790 SW BARNES RD, SUITE 140
PORTLAND, OR 97225
Washington County (503) 643-2100
DR. KRISTEN YU DDS
Dentist (Pediatric Dentistry)
11790 SW BARNES RD, BUILDING A SUITE 280
PORTLAND, OR 97225
Washington County (503) 626-9700
SLEEPMED THERAPIES, INC
Durable Medical Equipment & Medical Supplies
11790 SW BARNES RD, SUITE 330
PORTLAND, OR 97225
Washington County (503) 228-4414
MRS. MICHELLE Y SKIERKOWSKI DDS, MS
Dentist (Pediatric Dentistry)
11790 SW BARNES RD, 280
PORTLAND, OR 97225
Washington County (503) 626-9700

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Clark's NPI number?

The NPI number for Gregory Clark is 1225141823. It was assigned to this individual provider in the NPPES registry on August 16, 2006.

Where is Gregory Clark located?

Gregory Clark practices at 11790 SW Barnes Rd Suite 330, Portland, OR 97225. The listed phone number is (503) 228-4414.

What is Gregory Clark's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Sleep Medicine, with taxonomy code 2084S0012X.

Is Gregory Clark enrolled in Medicare?

Yes. Gregory Clark is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gregory Clark was last updated on March 10, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.