Nephrology Associates of Northern Illinois and Indiana (NANI)
Nephrology • Alton, IL • Since 1968
About
Nephrology Associates Northern Illinois / Indiana (NANI) is a private hospitals and health care provider specializing in kidney disease and hypertension care. Founded in 1968 and based in Oak Brook, IL, NANI operates 28 U.S. offices (including Illinois, Indiana, and nearby states) with over 125 physicians and around 116 employees. They offer comprehensive nephrology services across multiple locations, and are the largest nephrology practice in the region. If you’re seeking a NANI nephrologist near Alton, IL, you’d likely look for the Chicago/IL/IN area offices within their network, as the Alton-specific location isn’t listed among their provided addresses. For direct care, you can contact their main lines or visit nephdocs.com for a physician directory and office locations.
Clinic Type
Nephrology
Address
120 W. 22nd St., Oak Brook, IL 60523, US
Phone
630-573-5000
OCRComplaint@hhs.gov
Opening Hours
Not published — contact the clinic to confirm hours.
Website
Telehealth
Available (in-office and virtual telehealth appointments)
Services Offered
—
Technology & Equipment
Team
Insurance & Payment
The page notes that they accept most insurances but does not list specifics.
Languages Spoken
—
Commitments
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Healthgrades (specific to Dr. Erik Daniels, MD in Alton, IL): 3.22 out of 5 stars (Not explicitly stated total count, based on aggregated feedback)
Patients praise
- Long-term patient relationships (multi-decade)
- Appreciation for direct, no-nonsense communication style
Common complaints
- Perceived arrogance and condescending attitude in some practitioners
- Concerns regarding lack of listening and empathy from medical staff
"He is a no nonsense Doctor, tells the patient up front the plain facts. I have been with him 25 years and look forward to seeing him every appointment."
— Healthgrades user review"Dr. Daniels does not listen to the patient’s concerns. He is arrogant and condescending. He has a know-it-all attitude, and if you have any information to share he won’t listen."
— Healthgrades user reviewSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- AstraZeneca APPRECIATE Trial Hinsdale, IL - NephCure — Sep 12, 2025
- Stacey Rogers, NP - Nurse Practitioner in Joliet, IL — May 14, 2026
- Walden WAL0921-02 Study Hinsdale, IL - NephCure — Jul 23, 2025
- Donna Romero — Jun 21, 2026
- Lauren Tedesco — Jul 2, 2026
Information sourced from the clinic's website as of July 11, 2026.
More nephrology clinics in Alton
St. Louis Kidney Care is a medical practice in Saint Louis, MO, offering kidney care services. The company operates three offices in the United States (all in Missouri) with main contact numbers including 314-741-1677 and 636-937-3337. Notable details: - Industry: Medical Practices; Services: kidney care and related medical services - Headquarters: Saint Louis, MO - Offices: 12855 N Forty Dr, St. Louis, MO 63141; 11155 Dunn Rd Ste 211N, St. Louis, MO 63136; plus another St. Louis location - Website: stlouiskidneycare.com - Workforce: ~5 employees - Online presence: about 1,389 monthly visits; bounce rate ~0.4%; mostly U.S. traffic (86%), with minor international traffic (14% from Qatar) - NAICS/SIC: 62/621; 80/809 If you’re specifically seeking information on an Alton location, there is no Alton address listed among their three Missouri offices. Louis area?
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