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

MARK W HAMM DMD
NPI 1225035207
Dentist - General Practice in Roseburg, OR

Q: What is Mark Hamm's NPI number?

The NPI number for Mark Hamm is 1225035207. It was assigned to this individual provider in the NPPES registry on July 5, 2005.

Q: What is Mark Hamm's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Hamm 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.

Active since July 05, 2005

1313 W HARVARD AVE, ROSEBURG, OR 97470(541) 673-3355(541) 673-1533 Get Directions Write a Review

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

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About Mark W Hamm Dmd NPPES

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

MARK W HAMM DMD (NPI 1225035207) is an individual general practice provider in Roseburg, Oregon, licensed in Oregon (5836) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1225035207

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameMARK W HAMMCredential: DMD

Location Address1313 W HARVARD AVERoseburg, OR 97470-2838

Mailing Address1381 Se Magnolia DrRoseburg, OR 97470-4373 · (541) 673-4442 · Fax (541) 673-1533

Phone(541) 673-3355

Fax(541) 673-1533

Sole ProprietorNo

Enumeration DateJuly 5, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1225035207 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 · 5836

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.

1313 W HARVARD AVE, Roseburg, OR 97470

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.Insurance ›

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 Hamm's NPI number?

The NPI number for Mark Hamm is 1225035207. It was assigned to this individual provider in the NPPES registry on July 5, 2005.

Where is Mark Hamm located?

Mark Hamm practices at 1313 W Harvard Ave, Roseburg, OR 97470. The listed phone number is (541) 673-3355.

What is Mark Hamm's specialty?

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

What insurance does Mark Hamm accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas, BridgeSpan Health Company and Regence BlueCross BlueShield of Oregon list Mark Hamm as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mark Hamm 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.