Primary Specialty
Radiation Oncology
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Practice Focus Areas
- Brain Tumors
- Breast Cancer
- Gastrointestinal Cancer
- General Radiation Oncology
- Genitourinary Cancers
- Lung Cancer
- Lymphoma
- Stereotactic Body Radiotherapy
Education
- Medical Education:
-
MD, Harvard Medical School - 1995
- Internship:
-
University of Chicago - 1995
- Residency:
-
University of California (San Francisco) - 2000
Board Certifications
- American Board of Radiology - Radiation Oncology (Certified)
Faculty Profile
Clinical Assistant Professor, Feinberg School of MedicinePractice Groups and Affiliations
- Medical Group:
- Northwestern Medical Group
- Alignment Category:
-
Northwestern Medicine Physician Network
- On Medical Staff At:
-
Grayslake Ambulatory Surgery CenterNorthwestern Lake Forest Hospital
Ratings and Reviews
At Northwestern Medicine, our patient’s feedback is important to us. While different care providers have their own unique strengths, we strive to be as transparent as possible with our quality of care.
Read Ratings FAQsOverall Rating
237 Ratings
Reviews from Patients
Reviews from Patients
August 22, 2023
5.0 star star star star starDoctor Marc was very nice and very knowledgeable telling me everything I needed to know and i felt very comfortable and happy. and the nurse Debbie was realy nice and she informed me with a lot of information.
June 29, 2023
5.0 star star star star starHe’s as fine as a hot fudge sundae! Very interactive, terrific sense if humor, very intelligent, able to explain everything in a VERY concrete understandable fashion, compassionate, puts the patient at ease, humane, professional in manner and dress and ethics. I say. Run don’t walk to see Dr. Marc Posner! He was my 2nd opinion- as it turned out, my first choice paled in comparison and I will be using him for my radiation. I was anxious when I walked in and confident I was in good hands when I left.
May 24, 2023
5.0 star star star star starMy interview was one of the best I have had. Dr. Posner spent a great deal of time explaining all of my questions and giving me info on questions I should have asked but forgot. He make me comfortable with the process and his department's ability to deliver a successful treatment.
May 18, 2023
5.0 star star star star starDr. Marc Posner is a ray of sunshine in the cloudy days of cancer treatment. He is positive, supportive, and non-judgemental. He takes time to explain radiation oncology and answers every question. He is patient first in his language, his practices, and his support - an advocate for patients in negotiating the journey of cancer treatment. He also has surrounded himself with outstanding staff who also reflect his positive patient care values.
March 20, 2023
5.0 star star star star starAt a scary time in life he did a great job of explaining what and why’s of the treatment ahead…made you feel a real sense of comfort and ease. I left there feeling like I was in good hands going forward.
March 18, 2023
5.0 star star star star starHe was amazing. I came in with very little information and understanding about my type of cancer and how that cancer presented in my case. He took the time to explain everything to me. I came out of the consult with a better understanding of my situation and how the radiation treatment would work. Etc.
March 09, 2023
5.0 star star star star starI found him to be a very understanding Dr. and he listens to what you have to say. He explains in a way that you can understand. He also has a sense of humor that God only knows more Drs need this.
February 27, 2023
5.0 star star star star starDr. Posner took the time to explain the medical issues I was dealing with. He answered all our questions in a very understandable way. He even drew a few diagrams to make some difficult concepts easier to comprehend. Dr. Posner is a friendly, highly skilled professional.
February 11, 2023
5.0 star star star star starDr Posner explained my care plan. He took time to answer my questions. He managed my worry by telling what to expect and when to worry. He empowered me to partner in my care and to share my worries and fears. He made my day!
January 27, 2023
5.0 star star star star starMy visits are informative and I rate Dr Marc Posner as a TOP SHELF DOCTOR with the highest rating from all my encounters. I am being asked to rate Dr Posner - he is more than a 10 - he is rated in my book as a 25+.
January 24, 2023
5.0 star star star star starDr. Posner is an excellent physician. He goes above and beyond to help a patient with his knowledge and expertise in his field and helps you navigate through this difficult time. I would highly recommend Dr. Posner.
January 15, 2023
5.0 star star star star starDr. Posner explained everything very clearly. He had already reviewed my medical records and knew all about me. Most doctors go right for the computer. He didn’t even touch it once. He made me feel very comfortable and gave me so much hope. He is an awesome doctor!
December 05, 2022
5.0 star star star star starI took a while to research radiation oncologists. I was very impressed with Dr. Posner’s video on the web site and what he shared was his philosophy when working with patients. And then meeting with him in person, I felt informed, assured, and cared for.
November 05, 2022
5.0 star star star star starI found Dr. Marc Posner, MD extremely compasionate, knowledgeable and confident in the history of the processess and my individual case. He also acknowleged complementing his collegues surgeons, and staff. I recommend he produce a CD video of the history and care on behalf of Northwestern.
October 27, 2022
5.0 star star star star starOur experience meeting Dr Posner was very informative. His nurse made us feel welcome and explained radiation treatment options. Dr Posner was very easy to talk to and had a calming manner; took ample time with us and answered many questions Rated as one of our best doctor visits.
Disclosures
Industry Relationships
Consulting / Related Activities
Faculty member engaged in activities such as speaking, advising, consulting, or providing educational programs for the following companies or other entities
- Elekta
External Professional Relationships
Pharmaceutical, device, and biotechnology companies frequently collaborate with basic scientists and physicians within an academic medical center to help advance science and improve patient care. These relationships are important in achieving scientific breakthroughs and in establishing the effectiveness and safety of promising new therapies. In order to assure objectivity in clinical research and patient care, the Northwestern University Feinberg School of Medicine (Feinberg), Northwestern Memorial HealthCare, Children's Hospital of Chicago Medical Center, and the Shirley Ryan AbilityLab have adopted integrity policies that require research and clinical faculty (in full-time, part-time, and unpaid/voluntary categories) to report compensated and uncompensated external industry relationships. Patients are encouraged to discuss these disclosures with their physician as well as to inquire as to how these relationships are overseen by Feinberg. To learn more about our Disclosure and Professional Integrity Policy, and the conflict of interest policies of our joint affiliate survey partners, please go to our Office for Regulatory Affairs Policies page.