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Summary: The page is about Ascension Illinois, a nonprofit health care organization based in Chicago, delivering primary and advanced specialty care (including cardiology) across Illinois. It highlights Ascension Illinois as part of the Ascension health system, with emphasis on local, close-to-home services and a team-oriented structure. The organization operates in the Hospitals and Health Care industry, employs 41 staff (noted as +165.4% YoY), and lists key executives and leaders across medical, operations, and security roles. The site serves as the Illinois hub for Ascension’s care network, including information on affiliated services and contact points, with the homepage at healthcare.ascension.org/illinois.

Clinic Type

Endocrinology

Address

Chicago, IL, US

Phone

(630) 866-3636

Email

careers@ascension.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

Team

  • Wahid Kassar, MD — Endocrinology, Diabetes & Metabolism
  • Faisal M Qureshi, MD — Endocrinology, Diabetes & Metabolism
  • Mario H Chan, MD — Endocrinology, Diabetes & Metabolism
  • Paraskevi Sapountzi, MD — Endocrinology, Diabetes & Metabolism
  • Tina C Bansal, MD — Endocrinology, Diabetes & Metabolism
  • Przemyslaw (Peter) L Lastowiecki, MD — Endocrinology, Diabetes & Metabolism
  • Daniel D So, MD — Endocrinology, Diabetes & Metabolism
  • Zubair M Ilyas, MD — Endocrinology, Endocrinology & Metabolism, Internal Medicine

Insurance & Payment

Languages Spoken

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Healthgrades (Dr. Jennifer Cunningham): 3.8 out of 5 (10 reviews)

Patients praise

  • Highly attentive and professional nursing staff
  • Doctors described as caring, knowledgeable, and good listeners
  • Efficiency in the check-in and checkout processes
  • High patient satisfaction with the thoroughness of medical examinations

Common complaints

  • Reports of unprofessional staff conduct and yelling at patients
  • Concerns regarding HIPAA violations by staff members
  • Frustration with doctors focusing on unrelated health issues during appointments instead of the primary concern
  • Limited availability for appointments with some providers

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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