Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Santa Ana Tustin Radiology Medical Group

Q: What is the NPI number for Santa Ana Tustin Radiology Medical Group?

The NPI for Santa Ana Tustin Radiology Medical Group is 1972531036, a Type 2 (organization) record in the CMS NPPES registry.

Diagnostic Radiology Physician in Santa Ana, CA · enumerated 2006 · authorized official Mark Stein, President.

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

National Provider Identifier

1972531036

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Santa Ana Tustin Radiology Medical Group

Practice address 1450 N Tustin Ave, Suite 132, Santa Ana, CA, 92705

Phone (714) 835-3709

Fax (714) 836-7034

Enumeration date Jun 29, 2006

Last updated in NPPES Sep 20, 2007

Taxonomy & classification

2085B0100X Body Imaging Physician Allopathic & Osteopathic Physicians · License FNP 27532 (CA) Secondary

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License FNP 27532 (CA) Secondary

2085N0904X Nuclear Radiology Physician Allopathic & Osteopathic Physicians · License FNP 27532 (CA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License FNP 27532 (CA) Primary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License FNP 27532 (CA) Secondary

2085U0001X Diagnostic Ultrasound Physician Allopathic & Osteopathic Physicians · License FNP 27532 (CA) Secondary

Authorized official

Name Mark Stein

Title President

Phone (714) 835-3709

Other identifiers

Identifier	Type	State	Issuer
GR0011440	Medicaid	CA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Santa Ana Tustin Radiology Medical Group?

The NPI for Santa Ana Tustin Radiology Medical Group is 1972531036, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Santa Ana Tustin Radiology Medical Group?

NPPES lists Mark Stein (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-20.