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3g Medical Imaging

Diagnostic Ultrasound Physician in Irvine, CA · enumerated 2016 · authorized official Gregg Nielson, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1306203666

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Registry record

Entity type Organization (Type 2)
Legal business name 3g Medical Imaging
Practice address 1400 Reynolds Ave Ste 110, Irvine, CA, 92614
Phone (949) 502-4164
Fax (949) 209-4115
Enumeration date Jan 18, 2016
Last updated in NPPES May 28, 2021

Taxonomy & classification

2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Gregg Nielson
Title President
Phone (805) 705-5003

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for 3g Medical Imaging?
The NPI for 3g Medical Imaging is 1306203666, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for 3g Medical Imaging?
NPPES lists Gregg Nielson (President) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-28.