Live
Read more

About

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.

Clinic Type

Endocrinology

Address

800 E Woodfield Rd Ste 113, Schaumburg, IL 60173

Phone

847-686-6866

Email

careers@ascension.org

Opening Hours

Not published — contact the clinic to confirm hours.

Emergency Care

If you are experiencing a life-threatening emergency, call 911 or go directly to the ER.

Services Offered

  • Endocrinology
  • Endocrinology, Diabetes & Metabolism
  • Pediatric Endocrinology & Diabetes
  • Reproductive Endocrinology/Infertility

Team

  • Abigail L Greider, APN, APN — Endocrinology (APN)
  • Madhur Dass, APN, APN — Endocrinology (APN)

Insurance & Payment

Languages Spoken

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Healthgrades: 4.1/5 (26)
  • WebMD: 1.0/5 (1)
  • WebMD: 4.5/5 (21)
  • Vitals: 4.0/5 (2)
  • Vitals: 3.8/5

Patients praise

  • Physicians described as knowledgeable and up-to-date on clinical practices
  • Patients appreciate personalized care and bedside manner
  • Physicians perceived as caring and thorough

Common complaints

  • Long wait times for appointments and office visits
  • Frustration with administrative and office management processes
  • Issues with staff communication and coordination of tests

"I have seen Dr KASSAR for years and highly recommend him. Above all he shows patients with diabetes that he cares... He is a gentleman."

Healthgrades

"Dr. Zeller is good doctor -- up to date on clinical trials and technology, but his office is poorly run. If you can put up with the inconvenience of his office, he is worth seeing."

Vitals

"Enjoy my time with Dr. Rupp. Long time patient. Takes a sincere interest in my well being - demonstrated over the years. Great doctor, great credentials, and I would highly recommend her to others."

WebMD

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.

More endocrinology clinics in Wheaton

Wheaton, IL·Endocrinology

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.

VerifiedOnline booking
Wheaton, IL·Endocrinology

VerifiedOnline booking

See all endocrinology clinics in Wheaton

Comparing your options?

See other endocrinology clinics in Wheaton, or search the full directory by insurance, ratings, and more.

More Endocrinology Clinics