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Diagnostic Services, LLC

Q: What type of organization is Diagnostic Services, LLC?

Diagnostic Services, LLC is registered in NPPES as a Diagnostic Radiology Physician (its primary provider taxonomy).

Diagnostic Radiology Physician in Watervliet, MI · enumerated 2008 · authorized official Diana Ostermann, Owner.

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

National Provider Identifier

1255582250

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Registry record

Entity type Organization (Type 2)

Legal business name Diagnostic Services, LLC

Practice address 400 Medical Park Dr, Watervliet, MI, 49098

Phone (269) 463-3111

Enumeration date Oct 8, 2008

Last updated in NPPES Dec 19, 2011

Taxonomy & classification

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Diana Ostermann

Title Owner

Phone (734) 677-7400

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Diagnostic Services, LLC?

Diagnostic Services, LLC is registered in NPPES as a Diagnostic Radiology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-19.