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About

Summary: Advocate Health Care (now Advocate Health) is a large nonprofit, integrated health system based in Oak Brook, IL, formed from the combination of Advocate Aurora Health and Atrium Health. It operates as Advocate Health Care in Illinois and encompasses a network of about 68 hospitals and 1,000+ care locations, with nearly 162,000 employees and an extensive graduate medical education program. The system serves nearly 6 million patients, conducts hundreds of clinical trials, and is known for specialties in cardiology, neurosciences, oncology, pediatrics, rehabilitation, organ transplants, burn care, and musculoskeletal programs. It emphasizes value-based care and equitable access, and provides about $5 billion annually in community benefits. Wake Forest University School of Medicine is the academic core. For endocrinology specifics in Wheaton, IL (60187), Advocate Health’s endocrinology services would be part of Advocate Medical Group within the Wheaton area, connected to the broader Advocate Health system. If you’re seeking a specific Endocrinology location in Wheaton, IL, I can look up the exact address and contact details.

Clinic Type

Endocrinology

Address

Advocate Medical Group Endocrinology - Wheaton, IL 60187

Phone

18003238622

Email

security@aah.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Endocrinology
  • Diabetes care
  • Thyroid disorders
  • Hormonal disorders
  • Pediatric endocrinology
  • Hormone replacement therapy

Insurance & Payment

Languages Spoken

  • English

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • US News Health (for Dr. Zeller): 4/5 (46 reviews)
  • WebMD (for Dr. Zeller): 4.5/5 (28 ratings)
  • Vitals (for Dr. Zeller): 3.8/5 (25 ratings)
  • Healthgrades (for Dr. Zeller): 3.7/5 (17 ratings)

Patients praise

  • kind, patient, and friendly bedside manner from certain providers like Dr. Zeller
  • thorough explanations of medical conditions and treatments
  • effective communication with both adult and pediatric patients

Common complaints

  • long wait times for appointments
  • scheduling and administrative issues, including appointment changes and difficulty reaching the office by phone
  • some patients reported negative bedside manner or feeling dismissed by providers
  • concerns about insurance acceptance and communication regarding coverage

"Dr. Zeller is kind and patient. He took the time to explain things to myself and my child (the patient). The hype is correct. He is worth it. Highly recommend."

WebMD User Review (2023)

"This is the worst office experience I have ever had in my life. They changed my daughter’s appointment 2 times due to their staffing issues. As a result, my daughter was 8 weeks late from her original appointment time and then a day before we were finally set for our appointment I received a letter in the mail saying they no longer accept our insurance and couldn’t help us out."

WebMD User Review (2022)

"When Dr. Stein came into the room he told me he didn't know why I was there... When I asked him what the modules were and if they needed treatment he said that this was "a waste of time" that he "didn't have." With that he left the room. The whole visit was <5 min. He didn't even examine me."

Vitals User Review (2013)

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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Wheaton, IL·Endocrinology

Summary: - Ascension Illinois is a nonprofit health care system based in Chicago that provides primary and advanced specialty care, including cardiology and other medical services, across Illinois. - It operates in the hospitals and health care industry, with a focus on personalized care and near-home access. - Key leadership and structure include executives like VP of Pharmacy Services and Chief Clinical Officer; the organization employs a growing team and serves the Illinois market under Ascension’s network. - While the page highlights general services and leadership, it does not list endocrinology-specific locations or Wheaton-specific endocrinologists. For endocrinology near Wheaton, IL, consider checking Ascension Wheaton’s medical staff or the main Ascension Illinois site for endocrinology services or joint-visit options.

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Wheaton, IL·Endocrinology

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