Davis Wright Berdy & Suffian
Davis Wright Berdy & Suffian holds 5 active organization NPIs in the federal registry, with practice locations in 5 cities in 2 states. All list allergy & immunology physician 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 NPIAlton, IL has the most NPIs, 1
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2006 and 2008
Source: CMS NPPES, enumeration dates.
4 NPIs were issued in 2008 alone, more than in any other year; none in 1 of the years between.
Alton, IL locations
The city with the most Davis Wright Berdy & Suffian NPIs. The full list of all 5 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1154506020 | 4325 ALBY ST SUITE 101, Alton, IL | Allergy & Immunology Physician | Jan 9, 2008 |
All 5 locations, by state and city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1154506020 | 4325 ALBY ST SUITE 101, Alton, IL | Allergy & Immunology Physician | Jan 9, 2008 |
| 1669657540 | 1011 BOWLES AVE SUITE G10, Fenton, MO | Allergy & Immunology Physician | Jan 9, 2008 |
| 1982889861 | 5551 WINGHAVEN BLVD STE 270, O Fallon, MO | Allergy & Immunology Physician | Jan 9, 2008 |
| 1639110935 | 456 N NEW BALLAS RD SUITE 129, Saint Louis, MO | Allergy & Immunology Physician | Jun 9, 2006 |
| 1962687855 | 851 E 5TH ST SUITE 108, Washington, MO | Allergy & Immunology Physician | Jan 9, 2008 |
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 Davis Wright Berdy & Suffian 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. Davis Wright Berdy & Suffian'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.