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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GREGORY MARK ATACK DMD, FAGD
NPI 1508839507
Dentist - General Practice in Portland, OR

Active since February 09, 2006
1585 SW MARLOW AVE, SUITE 100, PORTLAND, OR 97225(503) 297-1717(503) 292-7711 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Gregory Mark Atack Dmd, Fagd NPPES

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

DR. GREGORY MARK ATACK DMD, FAGD (NPI 1508839507) is an individual general practice provider in Portland, Oregon, licensed in Oregon (D7210) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1508839507
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. GREGORY MARK ATACKCredential: DMD, FAGD
Location Address1585 SW MARLOW AVE, SUITE 100Portland, OR 97225-5176
Mailing Address14871 Nw Dominion DrPortland, OR 97229-2298 · (503) 617-4558
Phone(503) 297-1717
Fax(503) 292-7711
Sole ProprietorNo
Enumeration DateFebruary 9, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1508839507 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in OR · D7210
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
1585 SW MARLOW AVE, Portland, OR 97225
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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.

STEPHEN GORDON WOODYARD D.M.D.,M.S.
Dentist (Periodontics)
1585 SW MARLOW AVE
PORTLAND, OR 97225
Washington County (503) 297-1444
DR. SCOTT L. STRONG DMD
Dentist (Periodontics)
1585 SW MARLOW AVE, SUITE 216
PORTLAND, OR 97225
Washington County (503) 297-1444
DR. DIANNA LYNN HENSON ND
Naturopath
1585 SW MARLOW AVE, SUITE 200
PORTLAND, OR 97225
Washington County (503) 548-4008
DR. NATALIA I MAKAROVA DMD
Dentist (General Practice)
1585 SW MARLOW AVE, STE 120
PORTLAND, OR 97225
Washington County (503) 297-1687
DR. EDUARDO MULERO DDS
Dentist (General Practice)
1585 SW MARLOW AVE, SUITE 204
PORTLAND, OR 97225
Washington County (503) 203-6978
AMERICAN ARTHRITIS & RHEUMATOLOGY ASSOCIATES -OR LLC
Internal Medicine (Rheumatology)
1585 SW MARLOW AVE
PORTLAND, OR 97225
Washington County (971) 384-5722
NORTHWEST NEURO-OPHTHALMOLOGY LLC
Psychiatry & Neurology (Neurology)
1585 SW MARLOW AVE, STE 110
PORTLAND, OR 97225
Washington County (503) 291-1422
OREGON PULMONARY ASSOCIATES, P.C.
Internal Medicine (Pulmonary Disease)
1585 SW MARLOW AVE, SUITE 101
PORTLAND, OR 97225
Washington County (503) 692-8560

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 Atack's NPI number?

The NPI number for Gregory Atack is 1508839507. It was assigned to this individual provider in the NPPES registry on February 9, 2006.

Where is Gregory Atack located?

Gregory Atack practices at 1585 SW Marlow Ave Suite 100, Portland, OR 97225. The listed phone number is (503) 297-1717.

What is Gregory Atack's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for Gregory Atack was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.