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Education

Medical Education:: MD, University of Illinois at Chicago College of Medicine - 1996
Residency:: McGaw Medical Center of Northwestern University - 1999

Board Certifications

American Board of Internal Medicine - Internal Medicine (Certified)

Faculty Profile

Clinical Instructor, Feinberg School of Medicine

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Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Northwestern Memorial 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.

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Overall Rating

5.0

5.0

2358 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 23, 2026

5.0

Dr Primer is a great doctor I have been seeing home for more than 25 years

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February 23, 2026

5.0

Excellent doctor

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February 22, 2026

5.0

Engaged and thorough.

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February 17, 2026

5.0

Through

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February 17, 2026

5.0

He's just a recommendable physician in my point of view of his medical practice.

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February 16, 2026

5.0

Patient, thorough, smart

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February 15, 2026

5.0

Great overall Dr.

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February 09, 2026

5.0

He took the time to get to know me. We work on medications together.

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February 09, 2026

5.0

Love him

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February 06, 2026

5.0

Dr. Primer goes above and beyond to ensure that all aspects of my health are examined, explored, and discussed as part of my annual exam! I appreciate his "patients first" approach!

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February 06, 2026

5.0

Kind and caring

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February 05, 2026

5.0

Simply the best physician I've ever interacted with! He listens carefully, is proactive and provides thorough, easily understandable explanations!

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February 04, 2026

5.0

Dr. Primer is extremely professional and thorough.

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February 04, 2026

5.0

Listens, answers all questions and concerns.

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February 03, 2026

5.0

Dr. Primer is an experienced practitioner who is both thorough and highly attentive.

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February 02, 2026

5.0

The Best.

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February 01, 2026

5.0

He's conscientious and I trust him.

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January 30, 2026

5.0

I know that my Doctor truly cares for my health and well being and I trust him.

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January 29, 2026

5.0

Very good and thorough.

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January 28, 2026

5.0

Attentive, direct and responsive with a mix of humor

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January 27, 2026

5.0

He takes the time to listen and is quite respectful. He wants his patients to be perfect.

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January 27, 2026

5.0

Dr Primer always takes time to listen to questions and give insightful answers. Always shows genuine concern and care of his patients

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January 27, 2026

5.0

Excellent

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January 25, 2026

5.0

Dr. Primer, has been a great doctor for me over the years.

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January 23, 2026

5.0

Dr. Primer is an excellent physician, shows great care, takes time with you, listening and responding to your concerns.

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January 23, 2026

5.0

Caring

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January 22, 2026

5.0

Straightforward, timely, compassionate.

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January 22, 2026

5.0

Dr Primer is our family physician and we trust him with our health

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January 21, 2026

5.0

The quality of care I received from him is outstanding. There isn't another primary care physician in Chicago I would rather have.

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January 21, 2026

5.0

Very experienced, knowledgeable and professional

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January 20, 2026

5.0

He is the best I believe

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January 16, 2026

5.0

he is great , very understandable , really is concerned about his patients and goes that extra mile for everyone . he saved my life !!

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January 15, 2026

5.0

It's hard to find a Physician who will take time with you.

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January 15, 2026

5.0

Listens Approachable

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January 14, 2026

5.0

Thorough exams from Dr Primer - very diligent in follow up. Listens well!!

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January 12, 2026

5.0

He is awesome, patience, shows his concerns, and always cheerful and pleasant.

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January 12, 2026

5.0

Dr. Primer is attentive, concerned, knows me and my history and always listens with a caring ear. I recommend him to all my colleagues.

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January 09, 2026

5.0

Dr. Primer is knowledgeable, professional, thorough and attentive.

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January 08, 2026

5.0

Please, with the care that he gives is very thorough and pays attention to what his patients have to say

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January 05, 2026

5.0

He is very care n reviewing our health

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January 05, 2026

5.0

He's empathetic, listens actively, and makes me feel confident in his direction.

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January 03, 2026

5.0

He is concerned about your health and makes great decisions about how to treat your illness.

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December 30, 2025

5.0

Dr. Primer is very good in listening and providing advice.

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December 29, 2025

5.0

Dr Primer answered my question

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December 22, 2025

5.0

Great team work

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December 16, 2025

5.0

Dr. Primer listens to you and discusses your concerns and health problems. He really cares about his patients and will order whatever tests are necessary. After the results are in he will comment, treatments and always follows up with a future visit.

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December 16, 2025

5.0

Personable and professional. Never rushed; seems happy to take whatever time is needed.

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December 16, 2025

5.0

knowledgeable , caring, kind, and proactive in medical care.

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December 15, 2025

5.0

I love Dr. Primer. He is so personable, answers all your questions, and spends the time needed. I never feel rushed. Ricca his nurse is excellent too!

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December 13, 2025

5.0

He is human, relatable, not aloof and merely efficient. He listens, asks the patient for input. Finally, he is thorough. He is a caring medical professional.

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December 13, 2025

5.0

His ability to Address all my health needs.

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December 11, 2025

5.0

Professional, and knowledgeable, complimented with a personable communication approach to patients.

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December 11, 2025

5.0

Have Constance in him

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December 10, 2025

5.0

He is a thorough & caring doctor with a wonderful manner.

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December 10, 2025

5.0

Dr Primer gave me amble time to discuss my background and his, to get to know each other as person, not as only patient and physician.

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December 10, 2025

5.0

Seeing him for 25 years, extremely theral, very concerned for my health issues

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December 10, 2025

5.0

Dr Primer was recommended through a long thread of people I know who have been pleased with his care over numerous years. Upon meeting him for the first time and having a wellness check, it was clear why they feel as strongly as they do about him. He listens well in an understanding and knowledgeable way, taking my concerns seriously and making wise suggestions for how to address them

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December 06, 2025

5.0

Friendly, comprehensive and professional.

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December 05, 2025

5.0

Dr Primer is the best. He shows he cares and he's knowledgeable and thorough and does not rush you. He is a great doctor.

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December 01, 2025

5.0

Understanding. Listens to my questions

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November 27, 2025

5.0

Very caring.

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November 27, 2025

5.0

He's very knowledgeable and experienced, he listens and he cares.

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November 24, 2025

5.0

He is a knowledgeable, personable and caring doctor.

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November 23, 2025

5.0

He's always looking for ways to help his patients.

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November 23, 2025

5.0

Great Doctor who discusses and address your issues

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November 21, 2025

5.0

Very caring and straight to the point. He listens and is very understanding

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November 21, 2025

5.0

He's an expert in his medical field.

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November 20, 2025

5.0

I have been a patient of Dr. PRIMER FOR OVER 30 Years. Always appreciate his professionalism and concern for my health.

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November 19, 2025

5.0

Listened carefully to questions and answers are explained.

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November 19, 2025

5.0

He is very pleasant and thorough. He is also willing to follow up on issues.

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November 17, 2025

5.0

Confident is his abilities. Listens. Concerned about me.

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November 16, 2025

5.0

Anyone would be fortunate to have such an informed, caring dr.

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November 15, 2025

5.0

He take care of my husband long time n I am new patients today . He is very comfortable also sharp . Thanks to him

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November 15, 2025

5.0

Professional and kind

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November 13, 2025

5.0

My whole family goes to Dr primer and he handles everything good all the time

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November 12, 2025

5.0

Dr. Primer has been my physician for years. I appreciate his care and advice. Always sound!

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November 11, 2025

5.0

Dr primer is the best

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November 11, 2025

5.0

I have known my doctor for over 25 years and he knows me, no need to remind him my medical history . He always gives explanations for his suggestions and enough information to involve me in making the decisions when there are multiple options. When I need to see specialists, his recommendations always work well for me. When my son aged out of pediatric care, he too started seeing Dr Prime who now treats the whole family.

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November 10, 2025

5.0

I'd rate him 11 on a scale of 10!

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November 10, 2025

5.0

I give the highest recommendation. Dr Primer is very caring, an excellent listener, very patient.

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November 08, 2025

5.0

I've been seeing Dr. Primer for many years. I will continue to do so. I feel in great hands with him. Not only is he highly skilled and provides top notch care, but he is nice and respectful of me, and he listens attentively to my questions and concerns. He shows he cares. Dr. Primer always provides outstanding, excellent care. Thank you, Dr. Primer.

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November 07, 2025

5.0

I am so VERY pleased with my care provided by Dr. Primer. He is so concerned about his patients health and make me feel that I matter and am important at my age. He listens to what I say and reacts to insure my health needs are addressed.

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November 07, 2025

5.0

He knows every patient Personally. He is amazing

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November 06, 2025

5.0

Dr Primer looks at the total health and has effective recommendations. He also listens and provides reasonable feedback.

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November 06, 2025

5.0

Dr Primer is very thorough and knowledgeable.

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November 04, 2025

5.0

He address my issues and concerns

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November 04, 2025

5.0

Dr Primer is thorough, knowledgeable and listens.

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November 03, 2025

5.0

I recommended few peoples they are all happy with Dr J Primer and they thx to me.

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October 31, 2025

5.0

Great Dr.

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October 31, 2025

5.0

Wonderful Dr.

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October 30, 2025

5.0

Works hard with his patients 100% care that he shows to his patients

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October 30, 2025

5.0

Personal interest and caring.

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October 29, 2025

5.0

Good

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October 24, 2025

5.0

Knowledgeable, caring, willing to listen to clients.

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October 23, 2025

5.0

Attentive, comprehensive, efficient and exceptional care provider.

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October 23, 2025

5.0

Dr. Primer has always been supportive and helpful, and he truly cares about helping his patients to get better and to stay healthy.

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October 20, 2025

5.0

Compassionate and knowledgeable.

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October 20, 2025

5.0

Dr Primer is extremely knowledgeable and listens to the problem and solutions appropriately.

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October 16, 2025

5.0

Been with him for years, the best.

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October 14, 2025

5.0

Exceptional bedside manner. Incredibly knowledgeable.

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Disclosures

Jason I. Primer, MD reported no external professional relationships for calendar year 2024.

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.

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