Registry data as of Aug 27, 2026

Apex Diagnostics

Apex Diagnostics holds 5 active organization NPIs in the federal registry, with practice locations in 5 cities in 4 states. Each location can bill under its own NPI.

CMS NPPES registry, file of Aug 9, 2026 · legal names grouped after punctuation and "LLC" are removed · method · Verify with CMS →

Which NPI is yours?

Search the organization with your city to find the NPI for the location you visit or bill.

Find a location's NPI

Darien, IL has the most NPIs, 1

  1. Darien, IL1
  2. Niles, IL1
  3. Merrillville, IN1
  4. Baltimore, MD1
  5. Traverse City, MI1

Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.

Most NPIs were issued in 2014 and 2020

Apex Diagnostics NPIs by year issued2014: 1, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 2, 2021: 1, 2022: 0, 2023: 0, 2024: 0, 2025: 0, 2026: 100.511.5220142016201820202022202420261211
Apex Diagnostics NPIs by year issued2014: 1, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 2, 2021: 1, 2022: 0, 2023: 0, 2024: 0, 2025: 0, 2026: 100.511.5220142015201620172018201920202021202220232024202520261211
Apex Diagnostics NPIs by year issued2014: 1, 2015: 0, 2016: 0, 2017: 0, 2018: 0, 2019: 0, 2020: 2, 2021: 1, 2022: 0, 2023: 0, 2024: 0, 2025: 0, 2026: 100.511.5220142016201820202022202420261211

Source: CMS NPPES, enumeration dates.

2 NPIs were issued in 2020 alone, more than in any other year; none in 9 of the years between.

Darien, IL locations

The city with the most Apex Diagnostics NPIs. The full list of all 5 follows.

NPILocationPrimary taxonomyIssued
11549493298205 CASS AVE STE 108C, Darien, ILRadiology Clinic/CenterJul 14, 2020
All 5 locations, by state and city
NPILocationPrimary taxonomyIssued
11549493298205 CASS AVE STE 108C, Darien, ILRadiology Clinic/CenterJul 14, 2020
18610835946201 W HOWARD ST STE 211A, Niles, ILClinic/CenterJan 26, 2021
18714518158001 BROADWAY # 303A, Merrillville, INPortable X-ray and/or Other Portable Diagnostic Imaging SupplierJan 9, 2026
10438448972700 LIGHTHOUSE PT E STE 405, Baltimore, MDNeurology PhysicianMar 2, 2020
16294956843337 S AIRPORT RD W SUITE 2, Traverse City, MIClinic/CenterMar 27, 2014

Related names

Checking an organization

  1. Match the NPI to the exact location you will visit or bill; each location can have its own.
  2. Confirm the business entity with the secretary of state.
  3. Check the HHS-OIG exclusion list for the organization and its owners.
  4. Verify each clinician you will see on their own record and with the state license search.

Common questions

Why does Apex Diagnostics have 5 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Apex Diagnostics's NPIs list practice locations in 5 cities.

Is an organization NPI a license?

No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.

Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.