Dr. David R. Buyer, MD
Concierge Internal Medicine physician, Chicago, IL
Quintessential CareDr. David Buyer is an internal medicine physician with Quintessential Care, a membership-based primary care practice.
Facts on this page last checked October 2026. How we check doctors
About Dr. Buyer
Dr. Buyer is an internal medicine physician who also holds an MBA. He trained at the University of Illinois for medical school. He is a Fellow of the American College of Physicians.
He provides primary care for adults with diabetes, high blood pressure and cholesterol concerns. Quintessential Care offers membership-based primary care.
Membership and fees
Quintessential Care is membership-based, and the annual membership fee covers office visits and hospital visits.
Members are told to keep insurance. The membership covers visits in this office only, and other care is billed to insurance.
Members can book same day or next business day appointments and send secure messages for non-urgent questions.
Services
Education and credentials
Hospital and practice affiliations
Location
Patient reviews
I would recommend Dr. Buyer to anyone.
"Dr. Buyer is a great internist. He listens to you, does not jump to conclusions, and really puts thought into the diagnosis. I would recommend Dr. Buyer to anyone."
I love this clinic!
"I love this clinic! When I was in the hospital for asthma attacks, Dr. Buyer always came to see me. Whenever I tell my friends and family about his medical care, they are always bewildered as his quality of care was unheard of. I doubt I will ever find a doctor nearly as competent and compassionate."
Dr. Buyer is by far the best doctor I've ever had.
"Dr. Buyer has been my doctor for the past 15 years. Before him, I had three doctors. Dr. Buyer is by far the best doctor I've ever had. He is a terrific listener, sympathetic, and takes the time to get to know you before making a diagnosis."
Questions patients ask
Does Dr. Buyer take insurance, or offer a membership?
Quintessential Care is a membership-based primary care practice. Members are told to keep insurance. The membership covers visits in this office only, and other care is billed to insurance.
What does a membership at Quintessential Care include?
Office visits and hospital visits are included in the annual membership fee. Members can get same day or next business day appointments.
Where did Dr. Buyer train?
Dr. Buyer trained at the University of Illinois for medical school. He also holds an MBA.
Where is Dr. Buyer's office?
Dr. Buyer practices at Quintessential Care. The practice offers complimentary parking at a garage near its Chicago office.
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