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Allergy & Immunology Specialists in Rockford, IL

Browse 4 Allergy & Immunology providers listed in NPPES with a practice address in Rockford, Illinois.

4 Healthcare Providers

How Rockford compares with the U.S.

4 active clinicians in Allergy & Immunology list a practice address in Rockford, IL in the NPI registry.

With fewer than 10 clinicians, rates per 100,000 residents are not reliable enough to compare.

Too few clinicians in Allergy & Immunology in Rockford are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026.

Showing 1โ€“4 of 4 providers
With recent CMS data first, then Aโ€“Z

Dr. Charles Frey , DO

Allergy & Immunology

Active NPI Status
698 Featherstone Rd, Rockford, IL 611076303
Phone: 8153983277
NPI Identifier 1356321244
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Dr. Fatima T Mohiuddin , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
1253 N Alpine Rd, Rockford, IL 61107
Phone: 7796969201
NPI Identifier 1578674834
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Dr. Ahmad Ammar Mourad , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1253 N Alpine Rd, Rockford, IL 611072201
Phone: 8157136995
NPI Identifier 1861425720
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Dr. Chester J. Mellies , MD

Allergy & Immunology

Active NPI Status
698 Featherstone Rd, Rockford, IL 611076303
Phone: 8153983277
NPI Identifier 1770563660
View Full Profile

Frequently Asked Questions about Allergy & Immunology in Rockford

How do I check a Allergy & Immunology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Illinois licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.