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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.

MARK STEPHEN HARRIS DDS
NPI 1427002385
Dentist - General Practice in Eureka, CA

Active since May 22, 2006
831 HARRIS ST, EUREKA, CA 95503(707) 443-8367(707) 443-2371 Get Directions Write a Review

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

About Mark Stephen Harris Dds NPPES

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

MARK STEPHEN HARRIS DDS (NPI 1427002385) is an individual general practice provider in Eureka, California, licensed in California (24456) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1427002385
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameMARK STEPHEN HARRISCredential: DDS
Location Address831 HARRIS STEureka, CA 95503-4541
Mailing Address831 Harris StEureka, CA 95503-4541 · (707) 443-8367 · Fax (707) 443-2371
Phone(707) 443-8367
Fax(707) 443-2371
Sole ProprietorNo
Enumeration DateMay 22, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1427002385 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in CA · 24456
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.
831 HARRIS ST, Eureka, CA 95503
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Other Providers at the Same Location NPPES 5

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

DR. JASON F WOLVEN D.D.S.
Dentist (General Practice)
831 HARRIS ST, SUITE B
EUREKA, CA 95503
Humboldt County (707) 445-1301
T.F. VERT DDS.P.C.
Dentist (General Practice)
831 HARRIS ST
EUREKA, CA 95503
Humboldt County (707) 443-3005
DR. WILLIAM STEWART SPEER AU.D.
Audiologist
831 HARRIS ST, SUITE D
EUREKA, CA 95503
Humboldt County (707) 443-7111
DR. THOMAS FREDRICK VERT D.D.S.
Dentist (General Practice)
831 HARRIS ST
EUREKA, CA 95503
Humboldt County (707) 443-3005
ROGER LEE MILLER DDS
Dentist (General Practice)
831 HARRIS ST, #B
EUREKA, CA 95503
Humboldt County (707) 443-8425

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 Mark Harris's NPI number?

The NPI number for Mark Harris is 1427002385. It was assigned to this individual provider in the NPPES registry on May 22, 2006.

Where is Mark Harris located?

Mark Harris practices at 831 Harris St, Eureka, CA 95503. The listed phone number is (707) 443-8367.

What is Mark Harris'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 Mark Harris 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.