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Allerclinic,Ltd.

Allergy & Immunology Physician in Crystal Lake, IL · enumerated 2010 · authorized official Deana Dy, President.

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

National Provider Identifier

1164735437

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Registry record

Entity type Organization (Type 2)
Legal business name Allerclinic,Ltd.
Practice address 25 S Virginia St, Suite 203, Crystal Lake, IL, 60014
Phone (815) 459-5440
Enumeration date Jul 15, 2010
Last updated in NPPES Jul 15, 2010

Taxonomy & classification

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Deana Dy
Title President
Phone (815) 459-5440

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.

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Frequently asked questions

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-07-15. Verify at npiregistry.cms.hhs.gov.
Where is Allerclinic,Ltd. located?
The practice location on file with NPPES is in Crystal Lake, IL.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-15.