Dr. Marc Posner, MD

Dr. Marc Posner, MD

Radiation Oncology  |  
Male  |  
48 y/o

Accepting new patients

Dr. Marc Posner, MD is a radiation oncology doctor who practices in Lake Forest, IL. He is 48 years old and has been practicing for 22 years. Dr. Posner is affiliated with Northwestern Medicine Lake Forest Hospital.

Northwestern Medical Group

660 N Westmoreland Rd

Lake Forest, IL 60045
Get Directions

Accepted insurance

  • Aetna
  • Blue Cross Blue Shield
  • Cigna
  • First Health (Coventry Health Care)
  • HFN
  • Humana
  • MultiPlan
  • UnitedHealthCare

Learn about Dr. Posner

Care Philosophy

I treat all my patients as if they were my own family.
...Read More


Dr. Posner's Experience

Dr. Posner's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Radiation Oncology
  • Board certified in Radiation Oncology
  • No malpractice claims found
  • No sanctions found
  • No board actions found


  • Radiation Oncology

Board Certifications

  • Radiation Oncology
    Accredited by: American Board of Radiology*

Conditions Treated

  • Adult Development Disorders
  • Anal and Rectal Cancer
  • Bladder Cancer
  • Brain Cancer
  • Breast Cancer
  • Cancer
  • Cervical Cancer
  • Esophageal Cancer
  • Gynecologic Cancer
  • Lung Cancer
  • Lymphoma
  • Pancreatic Cancer
  • Prostate Cancer
  • Rectal Cancer
  • Sarcoma
  • Skin Cancer
  • Vulvar Cancer


  • 3D Conformal Radiotherapy
  • External Beam Radiotherapy
  • Radiation Oncology Procedures
  • Radiation Therapy
  • Stereotactic Radiosurgery

Background Check

0 Malpractice Claims

No malpractice history found for Illinois.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Harvard Medical School
    Undergraduate School | Graduated 1991
  • Harvard Medical School
    Medical School | Graduated 1995
  • Weiss Hospital University Chicago
    Internship Hospital | Completed 1996
  • University Of California Medical Center, San Francisco
    Residency Hospital | Completed 2000
  • University of Chicago
    Residency Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Posner has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Posner does not have any memberships or affiliations listed. If you are Dr. Posner and would like to add memberships or affiliations, please update your profile.

Dr. Posner's Reviews

Likelihood of recommending Dr. Posner to family and friends
based on 8 total reviews (3 with comments)
Dr. Posner's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    Under 10 minutes
Patient Comments (3)
Elmhurst, IL |
Dr. Posner was understanding and empathetic when I first met with him. He knew I was lost in a sea of prostate cancer treatment options and gave me great perspectives and information. His recommendation for IMRT made sense and I elected to become his patient. I've completed my treatment now and am hopeful for the most positive results. Dr. Posner's outlook has helped me skirt negative thoughts and worries. If you are seeking smart advice, I recommend Dr. Posner.
Eagle, WI |
I ended up with second degree burns . Very painful. NOt as expected. What could he prescribe for the pain and the open, oozing sores? "Nothing-- maybe something on the internet. ". After suffering on, finally contacted my dermatologist, primary physician , and the internet company. He actually called the dermatologist and yelled at him for prescribing an ointment and treatment for serious burns. Had Wound Care and a fortune in treatments for the raw skin. Nobody should go thru that.
in Lake Villa, IL |
Dr Posner is a credit the medical profession. He is intelligent, compassionate, individual. He takes time to explain procedures or any questions you may have. He doesn't rush you and rush you out. He should be cloned. He's one of the best doctors I've ever met.
Have you seen Dr. Marc Posner, MD?
Are you Dr. Posner?
Make it easy for patients to share their feedback. Also manage your personalized profile!

Visit Dr. Posner

Now Accepting New Patients
Dr. Posner accepts 8 insurance carriers
  • Aetna
    Aetna POS
    Aetna PPO
  • Blue Cross Blue Shield
    Blue Cross Blue Shield PPO
  • Cigna
    Cigna PPO
    Great West Healthcare-Cigna POS
    Great West Healthcare-Cigna PPO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • HFN
  • Humana
    Choice Care PPO
    Humana HMO
  • MultiPlan
    MultiPlan PPO
    PHCS Network PPO
  • UnitedHealthCare
    United Healthcare HMO
    United Healthcare POS
    United Healthcare PPO

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Posner has admitting privileges

Northwestern Medicine Lake Forest Hospital
660 N Westmoreland Rd
Lake Forest, IL 60045
View Hospital Profile

More Radiation Oncology Specialists like Dr. Posner at Northwestern Medical Group

Radiation Oncology Specialist