Allergy & immunology - Mercyhealth
Allergy Care • Rockford, IL • Since 1889
About
Mercyhealth, a nonprofit health system headquartered in Rockford, Illinois, operates as a regional network with over 85 facilities across southern Wisconsin and northern Illinois. It provides hospital-based, clinic-based, post-acute, and retail health services, and includes an owned insurance arm. The organization employs about 1,578 people and has a history dating back to 1889. For allergy and immunology needs in the Rockford area, Mercyhealth offers affiliated physicians and clinics within its Rockford and northern Illinois locations, with typical access to specialty care through Mercyhealth hospital and clinic networks. Key contact: main headquarters at 8201 E Riverside Blvd, Rockford, IL 61114; main phone numbers: 815-971-4707 or 1-815-971-5000.
Clinic Type
Allergy Care
Address
8201 E Riverside Blvd, Rockford, Illinois 61114, US
Phone
888.396.3729
tmichels@mhemail.org
Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Insurance & Payment
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Languages Spoken
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Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Healthgrades: Dr. Marisha Cook: 4.3 stars (Healthgrades); Dr. Charles Frey Jr: 4.4 stars (Healthgrades) (Dr. Marisha Cook: 40 reviews; Dr. Charles Frey Jr: 9 reviews)
- IDPH/Public Reporting: Recommendation rates: 62% for Rockton Ave, 68% for Riverside campus
Patients praise
- High satisfaction with doctor and nurse communication regarding clinical care
- Providers frequently described as knowledgeable and professional
- Effective diagnosis and treatment planning reported in specialized clinics
Common complaints
- Long wait times at facilities
- Difficulties with administrative tasks such as scheduling, referrals, and phone communication
- Concerns regarding staff responsiveness and courtesy outside of clinical interactions
- Challenges with noise and patient comfort during hospital stays
"He is very knowledgeable, does a very good job explaining test results and prescribing the right medications. I highly recommend him."
— Healthgrades review of Dr. Charles Frey Jr"Dr Frey is nice and a good doctor. His staff on the other hand is awful. 2 of the nurses have been extremely unhelpful and rude."
— Healthgrades review of Dr. Charles Frey Jr (Staff mention)Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Seasonal allergies already impacting residents before spring blossoms | MyStateline | WTVO WQRF News, Weather and Sports — Mar 25, 2026
- Alyssa M. Vasylyuk, PA - Physician Assistant in Rockford, IL — May 14, 2026
- Valerie K. Wright - Nurse Practitioner in Rockford, IL — May 14, 2026
- Keeping kids safe from the dangers of peanut allergies — May 20, 2026
- Spring Will Come - And So Will Sneezes: How to Tell What's Illness and What's Allergies this Season | Bellin Health — Apr 9, 2026
Information sourced from the clinic's website as of July 11, 2026.
More allergy care clinics in Rockford
OSF Medical Group – Allergy & Immunology in Rockford is not described on this page. The provided information pertains to Danville Polyclinic, part of OSF HealthCare, with locations in Covington, IN and Danville, IL/IN, but does not mention an Allergy & Immunology clinic in Rockford. Key details from the page: - OSF HealthCare operates Danville Polyclinic (Hospitals & Health Care), with 3 offices across the US (Covington, IN; Danville, IL; Danville, IN). - Contact: 1-217-446-6410 - Revenue: ~$9.55M; 5 employees listed - Services category includes clinical services, nursing, pharmacy, supportive/palliative care - Location addresses: Covington, IN; Danville, IL; Danville, IN If you’re specifically looking for OSF Medical Group – Allergy & Immunology in Rockford, this page does not provide that specialty or location. I can search for the Rockford Allergy & Immunology OSF clinic or provide alternative OSF Rockford allergy options if you’d like.
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