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DR. GREGORY JAMES NIELSEN D.D.S.
NPI 1578600318
Dentist - Endodontics in Billings, MT

Active since January 31, 2007
2225 BROADWATER AVE STE A, BILLINGS, MT 59102(702) 869-2800(702) 869-2803 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 21, 2022, Jul 7, 2017, Oct 17, 2016 (3 updates tracked since 2016).

About Dr. Gregory James Nielsen D.d.s. NPPES

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

DR. GREGORY JAMES NIELSEN D.D.S. (NPI 1578600318) is an individual endodontics provider in Billings, Montana, licensed in Colorado (8806) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1578600318
Entity TypeIndividualMale
Primary Taxonomy1223E0200X
Provider Legal NameDR. GREGORY JAMES NIELSENCredential: D.D.S.
Location Address2225 BROADWATER AVE STE ABillings, MT 59102-4707
Mailing Address4194 Bainbridge CirBillings, MT 59106-2421 · (702) 869-2800 · Fax (702) 869-2803
Phone(702) 869-2800
Fax(702) 869-2803
Sole ProprietorNo
Enumeration DateJanuary 31, 2007
Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration
✔ NPI 1578600318 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDentist · EndodonticsDental Providers
Taxonomy Code1223E0200X
Licenses✔ Licensed in CO · 8806✔ Licensed in MT · 11499
Definition

The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.

Also ListedDentist · General PracticeTaxonomy 1223G0001X · License 4702 (NV), 8806 (CO)
2225 BROADWATER AVE STE A, Billings, MT 59102
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma 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 Gregory Nielsen's NPI number?

The NPI number for Gregory Nielsen is 1578600318. It was assigned to this individual provider in the NPPES registry on January 31, 2007.

Where is Gregory Nielsen located?

Gregory Nielsen practices at 2225 Broadwater Ave Ste A, Billings, MT 59102. The listed phone number is (702) 869-2800.

What is Gregory Nielsen's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Endodontics, with taxonomy code 1223E0200X.

What insurance does Gregory Nielsen accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and HRI Dental & Vision and 4 other insurers list Gregory Nielsen 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 Gregory Nielsen was last updated on July 21, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.