Marcus J. Adair, MD
General Surgery
Accepting New Patients
Marcus Adair, MD
Marcus Adair, MD
Marcus J. Adair, MD
General Surgery
Accepting New Patients


I want to provide excellent patient care while maintaining honest, thorough communication with my patients and their families.


When Dr. Adair was six years old, he helped his mother work at a low-income clinic in the inner city of St. Louis, MO. He attributes his mother and the experience to molding him into the physician he is today.

“I observed the interactions between the physicians and patients and saw how important compassionate care is,” Dr. Adair said. “They made a significant difference in the lives of every person they saw and meant a great deal to the community.”

Dr. Adair loves being a surgeon and working with his hands to provide tangible solutions to serious problems. However, he also believes the patient-physician relationship is an essential part.

“Once we have a diagnosis and surgical plan, I want to make sure I have answered all their questions,” Dr. Adair said. “Having an open dialogue and informed expectations is key to developing a healthy relationship and positive outcomes.”

He enjoys traveling and attending sporting events with his wife and children, cooking and exercise. His favorite hobby is raising exotic fish.




Education & Experience

Primary Location

OSF Medical Group - Surgery
5668 East State Street Suite 1000
Rockford IL 61108

Accepted Insurance

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Additional plans may be accepted. If you don't see your plan listed here, call your insurance provider directly to confirm coverage.

  • Aetna
  • Aetna Better Health
  • Aetna Medicare
  • Aetna MMAI
  • Alliance
  • BCBS IL Blue Choice Preferred
  • BCBS IL Med Advantage HMO & PPO
  • Caterpillar PPO
  • Cigna
  • Cofinity
  • Corvel
  • Employer's Coalition on Health (ECOH)
  • Health Alliance
  • Health Alliance Medicare
  • HealthLink
  • Healthsmart/PPI, Inc./IHG
  • HFN 10 HFN 20
  • HFN CHC-Elite
  • HFN Platinum
  • Humana Commercial
  • Humana Medicare
  • Humana MMAI
  • Meridian Medicaid
  • Meridian MMAI
  • Molina Medicaid
  • Molina MMAI
  • Multiplan
  • OSF Direct Access Network
  • Private Healthcare Systems
  • StaffCorp
  • United Healthcare Commercial Plans
  • United Healthcare Medicare
  • Wellcare Medicare
  • Youthcare Medicaid
  • Zing Medicare