NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Allergy & Asthma Assoc., P.C.

Specialist in Danbury, CT · enumerated 2005 · authorized official Ruth Holloway, Insurance Manager.

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

National Provider Identifier

1881690717

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Allergy & Asthma Assoc., P.C.
Practice address 107 Newtown Rd, Danbury, CT, 06810
Phone (203) 748-7433
Fax (203) 790-5324
Enumeration date Jun 24, 2005
Last updated in NPPES Jul 21, 2022

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Ruth Holloway
Title Insurance Manager
Phone (203) 748-7433

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

Who is the authorized official for Allergy & Asthma Assoc., P.C.?
NPPES lists Ruth Holloway (Insurance Manager) as the authorized official for this organization.
What is the NPI number for Allergy & Asthma Assoc., P.C.?
The NPI for Allergy & Asthma Assoc., P.C. is 1881690717, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.