About
Dr. Mark Chien is a board-certified internist who has practiced in Chicago since 2006. He earned his undergraduate degree in Biologic Sciences from the University of Chicago. He completed medical school at the University of Illinois College of Medicine, then finished his internship and residency in Internal Medicine at the University of Illinois at Chicago College of Medicine.
Dr. Chien holds a staff position at Northwestern Memorial Hospital and coordinates care with specialists there and at other institutions. He serves as a clinical instructor at Northwestern Feinberg School of Medicine, staying actively involved in medical education. Patients know him for being attentive, caring, and personable. He places strong emphasis on communication, asking the right questions, and building long-term partnerships with each patient. He is passionate about individualized care and values the lifelong relationships that develop through concierge practice.
Education & Training
Undergraduate
University of Chicago, B.A. Biologic Sciences
Medical School
University of Illinois College of Medicine
Residency
Internal Medicine, University of Illinois at Chicago College of Medicine
Additional Training
Clinical Instructor, Northwestern Feinberg School of Medicine
Certifications
Conditions Treated
Who is Dr. Chien right for?
Dr. Chien is a strong fit for adults seeking an internist who prioritizes thoroughness and direct communication. Patients managing chronic conditions such as high blood pressure, diabetes, arthritis, asthma, or heart disease benefit from his hands-on approach. He works well with patients who want same-day or next-day access for urgent concerns. Those who value longer appointments and a physician who coordinates closely with specialists will find his model well-suited to their needs.
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Frequently Asked Questions
Dr. Chien manages a broad range of internal medicine conditions. He has particular experience with high blood pressure, diabetes, arthritis, asthma, and heart disease. He also handles acute illnesses, preventive care, and wellness examinations.
Dr. Chien schedules appointments from 30 to 60 minutes depending on the complexity of the visit. He moved away from the 15-minute appointment model to give patients enough time to address their concerns fully.
Yes. Dr. Chien holds board certification in Internal Medicine. He completed his residency training at the University of Illinois at Chicago College of Medicine.
Dr. Chien earned his undergraduate degree from the University of Chicago and completed medical school at the University of Illinois College of Medicine. He finished his internship and residency in Internal Medicine at the University of Illinois at Chicago College of Medicine.
Yes. Dr. Chien holds a staff position at Northwestern Memorial Hospital. If you are admitted there, he can supervise your care directly. For hospitalizations elsewhere, he communicates with hospital-based physicians and helps you understand your results and treatment plan.
Dr. Chien has long-standing relationships with specialists at Northwestern Memorial Hospital. He uses those connections to help coordinate referrals and specialist care for his patients.
Dr. Chien believes that accessible, thorough communication leads to better health outcomes. He focuses on asking the right questions, spending meaningful time with each patient, and building a long-term partnership. His goal is to manage as much care in-office as possible.
Yes. Dr. Chien serves as a clinical instructor at Northwestern Feinberg School of Medicine. He stays actively involved in medical education alongside his clinical practice.
Yes. Members can reach Dr. Chien through the patient portal, by phone, or via telehealth video visits. He returns phone calls directly and works around patients' schedules for urgent concerns.
Doctor profile last updated June 11, 2026