Dianon Systems
Dianon Systems holds 5 active organization NPIs in the federal registry, with practice locations in 5 cities in 4 states. All list clinical medical laboratory as their primary taxonomy; each location can bill under its own NPI.
Search the organization with your city to find the NPI for the location you visit or bill.
Find a location's NPIShelton, CT has the most NPIs, 1
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2005 and 2006
Source: CMS NPPES, enumeration dates.
3 NPIs were issued in 2005 alone, more than in any other year; none in 16 of the years between.
Shelton, CT locations
The city with the most Dianon Systems NPIs. The full list of all 5 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1962480608 | 1 FOREST PKWY, Shelton, CT | Clinical Medical Laboratory | Jan 4, 2006 |
All 5 locations, by state and city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1962480608 | 1 FOREST PKWY, Shelton, CT | Clinical Medical Laboratory | Jan 4, 2006 |
| 1497437446 | 12 TALLWOOD RD, Woodbridge, CT | Clinical Medical Laboratory | Aug 1, 2023 |
| 1952388902 | 5610 W LASALLE STREET STE 100, Tampa, FL | Clinical Medical Laboratory | Dec 29, 2005 |
| 1245216357 | 51 CHARLES LINDBERGH BLVD SUITE B, Uniondale, NY | Clinical Medical Laboratory | Dec 20, 2005 |
| 1912997354 | 840 RESEARCH PKWY, Oklahoma City, OK | Clinical Medical Laboratory | Oct 26, 2005 |
Checking an organization
- Match the NPI to the exact location you will visit or bill; each location can have its own.
- Confirm the business entity with the secretary of state.
- Check the HHS-OIG exclusion list for the organization and its owners.
- Verify each clinician you will see on their own record and with the state license search.
Common questions
Why does Dianon Systems 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. Dianon Systems'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.