Registry data as of Aug 27, 2026

United Diagnostic Services

United Diagnostic Services holds 10 active organization NPIs in the federal registry, with practice locations in 7 cities in 5 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

Lincoln, IL has the most NPIs, 2

  1. Lincoln, IL2
  2. Merrillville, IN2
  3. Farmers Branch, TX2
  4. Chicago, IL1
  5. Saint Louis, MO1
  6. Brooklyn, NY1
  7. Dallas, TX1

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

Most NPIs were issued in 2011 and 2012

United Diagnostic Services NPIs by year issued2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 1, 2011: 2, 2012: 2, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 2, 2019: 1, 2020: 0, 2021: 0, 2022: 100.511.522006200820102012201420162018202020222011: 2211211
United Diagnostic Services NPIs by year issued2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 1, 2011: 2, 2012: 2, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 2, 2019: 1, 2020: 0, 2021: 0, 2022: 100.511.52200620072008200920102011201220132014201520162017201820192020202120222211211
United Diagnostic Services NPIs by year issued2006: 1, 2007: 0, 2008: 0, 2009: 0, 2010: 1, 2011: 2, 2012: 2, 2013: 0, 2014: 0, 2015: 0, 2016: 0, 2017: 0, 2018: 2, 2019: 1, 2020: 0, 2021: 0, 2022: 100.511.522006200820102012201420162018202020222011: 2211211

Source: CMS NPPES, enumeration dates.

2 NPIs were issued in 2011 alone, more than in any other year; none in 10 of the years between.

Lincoln, IL locations

The city with the most United Diagnostic Services NPIs. The full list of all 10 follows.

NPILocationPrimary taxonomyIssued
1649571761110 S CHICAGO ST, Lincoln, ILPortable X-ray and/or Other Portable Diagnostic Imaging SupplierNov 4, 2010
1477841146110 S CHICAGO ST, Lincoln, ILDiagnostic Radiology PhysicianJul 15, 2011
All 10 locations, by state and city
NPILocationPrimary taxonomyIssued
17405891756124 N MILWAUKEE AVE STE 2, Chicago, ILDiagnostic Ultrasound PhysicianMar 24, 2011
1649571761110 S CHICAGO ST, Lincoln, ILPortable X-ray and/or Other Portable Diagnostic Imaging SupplierNov 4, 2010
1477841146110 S CHICAGO ST, Lincoln, ILDiagnostic Radiology PhysicianJul 15, 2011
19728661845304 BROADWAY, Merrillville, INDiagnostic Ultrasound PhysicianJun 21, 2012
10536760805304 BROADWAY, Merrillville, INPortable X-ray and/or Other Portable Diagnostic Imaging SupplierJul 5, 2012
18211806399495 PAGE AVE SUITE 103, Saint Louis, MOClinical Medical LaboratorySep 29, 2006
16994065531400 AVENUE Z STE 301, Brooklyn, NYRadiology Clinic/CenterJun 22, 2022
118419254412100 FORD RD STE B326, Dallas, TXDiagnostic Ultrasound PhysicianNov 5, 2018
153863605512100 FORD RD STE B326, Farmers Branch, TXPortable X-ray and/or Other Portable Diagnostic Imaging SupplierNov 2, 2018
104387288012100 FORD RD STE B326, Farmers Branch, TXDiagnostic Radiology PhysicianJul 2, 2019

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 United Diagnostic Services have 10 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. United Diagnostic Services's NPIs list practice locations in 7 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.