Megan C. Kosirog, MD | Northwestern Medicine

Education

Medical Education:: MD, Rush University Medical College - 2017
Residency:: McGaw Medical Center of Northwestern University - 2020

Board Certifications

American Board of Internal Medicine - Internal Medicine (Certified)

Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Catherine Gratz Griffin Lake Forest Hospital

Ratings and Reviews

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Overall Rating

5.0

5.0

2192 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 23, 2026

5.0

Excellent doctor!

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February 21, 2026

5.0

She is excellent

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February 20, 2026

5.0

Dr. Kosirog's intelligent calm demeanor is greatly appreciated. She is thorough, and always has a game plan. I am very glad she heads up my medical team!

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February 18, 2026

5.0

She is extremely knowledgeable and personable.

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February 17, 2026

5.0

Dr. Kosirog and her team are amazing. I have established such a great relationship with her, her PA, and others during my care within the practice. I always feel supported and involved with my treatment plans.

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February 17, 2026

5.0

Awesome Doctor!

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February 16, 2026

5.0

The best physician I've ever had. Smart, informed, Comprehensive thinker who is compassionate and pro-active.

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February 15, 2026

5.0

Very good at what she does!

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February 12, 2026

5.0

Dr. Kosirog is an exceptional Dictor.

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February 12, 2026

5.0

Dr. Kosirog is thorough and meets my care standards. She has a warm personality and is able to explain my health and medical concerns. She is a great doctor.

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February 10, 2026

5.0

Thorough, professional, courteous and friendly. Great rapport with her patients.

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February 09, 2026

5.0

I have recommended Dr. Kosirog to several friends.

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February 09, 2026

5.0

I'm lucky to have her as my primary care physician as she is very thorough and also very caring

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February 07, 2026

5.0

Dr Kosirog is a great listener, asks knowledgeable questions and anticipates my needs appropriately.

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February 03, 2026

5.0

She explained everything clearly

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February 03, 2026

5.0

THE BEST C

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January 29, 2026

5.0

She is very proactive of my health and she has a beautiful spirit .

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January 27, 2026

5.0

Kind

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January 26, 2026

5.0

EXCELLENT AND EXCEPTIONAL MEDICAL CARE!

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January 26, 2026

5.0

We thoroughly discuss all my symptoms and offer solutions

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January 26, 2026

5.0

Always recommend Dr Kosirog.

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January 22, 2026

5.0

Very easy to talk to, explains matters so you understand why you feel the way you do. Great bedside manner!!

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January 22, 2026

5.0

Dr. Kosirog is very thorough, has excellent bedside manners and always responds to messages.

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January 21, 2026

5.0

She is professional and nice

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January 21, 2026

5.0

She listens closely to all of my issues and really cares about helping.

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January 19, 2026

5.0

Dr Megan is great, she has been my primary care for the last 5 years as well as my husband and as a 67 years old person I categorically said she is the best !!!!

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January 17, 2026

5.0

Dr Kosirog is knowledgeable and resourceful.

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January 15, 2026

5.0

Took time to visit with me and answer all of my questions.

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January 12, 2026

5.0

Dr Kosirog is the best! I am so happy to have her as my doctor. She is caring, compassionate and through.

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January 12, 2026

5.0

She is intelligent and thorough but also kind and approachable.

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January 10, 2026

5.0

She spends time listening to me, discussing options. She is awesome

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January 10, 2026

5.0

Very personable and listened to my health concerns.

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January 08, 2026

5.0

She's very knowledgeable, compassionate, and has my best interest at heart!

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January 01, 2026

5.0

She is thorough, kind, relatable, and knows her stuff. She includes me in my care decisions and never seems rushed.

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December 30, 2025

5.0

Professional and compassionate physician.

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December 23, 2025

5.0

Thorough, takes her time talking to patient, goes over everything, asks questions.

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December 18, 2025

5.0

She is a wonderful doctor. Caring and thorough.

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December 16, 2025

5.0

Very professional and helpful

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December 15, 2025

5.0

Dr Kosirog has great patience and explains all issues succinctly and I'm a difficult person

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December 13, 2025

5.0

Best physician I've ever had. Effective brilliant caring and great communicator

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December 11, 2025

5.0

She is the best. If she doesn't understand a test results she will search it out for you and brings it into layman's terms.

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December 11, 2025

5.0

Dr. Kosirog is such a gem of a doctor! Thoughtful, kind, thorough, attentive, and efficient - couldn't ask for a better doctor. She's stylish too!

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December 09, 2025

5.0

Dr. Kosirog owas GREAT. She answered all my questions, listened well, and was very nice, professional, and friendly.

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December 04, 2025

5.0

She does her best to listen well and provide the highest level of care adequately.

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December 01, 2025

5.0

Listens to issues intently to understand issues. Asks for more information to help healthy solutions. Reviewed topics that other doctors have treated to insure total care is addressed.

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December 01, 2025

5.0

Dr. Kosirog is an excellent listener with up to date knowledge who takes patient input and inquires into account when developing treatment plans and health goals. I HIGHLY recommend her to others including my wife who began as a patient this year!

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December 01, 2025

5.0

Dr Kosirog takes time to talk about different care options for me. I feel comfortable with her knowledge about my care

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November 18, 2025

5.0

Bedside manor and thoroughness is superior

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November 16, 2025

5.0

Dr. Kosirog is a great listener, empathetic and knowledgeable.

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November 16, 2025

5.0

Dr Kosirog is a caring and thorough physician.

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November 13, 2025

5.0

Very good caring doctor

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November 12, 2025

5.0

Personal and effective

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November 10, 2025

5.0

She's a great listener and is always ready to answer any questions which I may have. It's obvious that she reads my file in advance so that we can make the most of my appointment time. In addition, I never feel rushed.

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November 07, 2025

5.0

She's so easy to talk to and she's very thorough. She has an amazing bedside manner.

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November 06, 2025

5.0

She is friendly. She communicates clearly. Her attitude & presentation encourage confidence.

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November 06, 2025

5.0

Knowledgeable, confident, concerning. Explained in detail regarding tests and conditions. Extremely helpful and reassuring. A great doctor.

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November 05, 2025

5.0

She's a great doctor. She listens to my concerns and she's very thorough.

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November 04, 2025

5.0

Patient, capable and answered all my questions! Very personable and pleasant !

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November 04, 2025

5.0

She us thorough and a great listener

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November 04, 2025

5.0

Dr. Kosirog is engaging and thorough. Wonderful personality and easy to converse with.

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October 30, 2025

5.0

One of the best doctors I ever had

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October 30, 2025

5.0

She's thorough and has great knowledge.

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October 28, 2025

5.0

Dr Megan Kosirog, I recommend her all the time, she is the best doctor with a wonderful bed side manor.

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October 28, 2025

5.0

Knowledge and skill set.

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October 28, 2025

5.0

Dr K is caring , knowledgeable and proactive . She has preventive goals in mind for my health. She is also open to my opinions .

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October 21, 2025

5.0

She is excellent. On top of things and very responsive.

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October 20, 2025

5.0

She listens. She's demonstrates sincere concern for her patients. She has a great sense of humor. And she's a skilled physician.

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October 17, 2025

5.0

Wonderful, Dr.

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October 17, 2025

5.0

Thorough, patient, responsive, caring and knowledgeable and proactive

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October 16, 2025

5.0

She is truly the best doctor I have ever had and trust me I have had a lot

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October 14, 2025

5.0

She is a very caring doctor. I am happy I found her

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October 14, 2025

5.0

Dr is very supportive and always responsive and quick to analyze my issues. Very easy to talk with and ask questions and she finds appropriate treatments

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October 13, 2025

5.0

She talks to you as a real person.

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October 13, 2025

5.0

Close personal attention to patients and a true feeling that she knows and cares about us as unique individuals. Extremely careful and current in her medical knowledge. Fantastic compassion and support. She's awesome!!

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October 13, 2025

5.0

Best primary care doctor! Receive the best care ALWAYS! I feel looked after and genuinely cared for by her. Truly amazing. Thankful to have her as my pcp.

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October 11, 2025

5.0

She Listens, she's thorough, professional

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October 10, 2025

5.0

She listens and always has good advice and answers. She is patient and doesn't get defensive if I ask questions.

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October 10, 2025

5.0

She is special. Listening, probing, suggesting ways of solving whatever is bothering me.

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October 09, 2025

5.0

Dr Kosirog is adorable! She is positive & upbeat, thorough & spends as much time with her patients as they need.

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October 08, 2025

5.0

Dr Kosirog caring,thoughtful and listens.

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October 02, 2025

5.0

She's wonderful! Very thorough and thoughtful.

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October 01, 2025

5.0

I've recommended her to many people! She is a star and a light into the world!

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September 30, 2025

5.0

Dr Kosirog is just a wonderful doctor. Smart, thorough & compassionate- just AWESOME. And I am not being melodramatic when I say her thoroughness may have saved my life!

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September 29, 2025

5.0

Dr. Kosirog is so caring, professional and brilliant.

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September 23, 2025

5.0

I have recommended her some of my family members also go to Dr. Kosirog. Her expertise is why we keep coming back. She's a great listener, gives me the pros and cons of options so I can make a better health decision.

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September 22, 2025

5.0

she is so professional and kind

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September 20, 2025

5.0

Incredible individual

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September 19, 2025

5.0

Dr. Kosirog listens to my concerns and discusses them with me. She asks questions and confirms with the me the agreed upon approach before we move to a new topic. She is professional, yet extremely caring about me as an individual.k

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September 18, 2025

5.0

I love Dr. Kosirog! She's so easy to talk to and very attentive. She always makes sure to let me know if I need anything, she is always reachable. Great bedside manners

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September 17, 2025

4.0

Knowledgeable & personable

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September 17, 2025

5.0

She is fantastic! She takes her time and never rushes the visit. She is very knowledgeable and has great follow through!

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September 15, 2025

5.0

She is fantastic. She's on top of everything. She listens, involves me in decisions, and cares. She is never rushed.

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September 15, 2025

5.0

She's thorough she straightforward and she's a terrific doctor

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September 11, 2025

5.0

The best physician I have ever had! Superb in every way!

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September 10, 2025

5.0

Kind and considerate

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September 09, 2025

5.0

I love her she's so knowledgeable, compassionate, and I'm top of it

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September 08, 2025

5.0

Dr Kosirog listens, takes time and answers all of my questions. She is an excellent physician she is kind and caring.

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September 08, 2025

5.0

She was very responsive and spends a lot of time explaining things and talking about different treatment options.

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August 30, 2025

5.0

She is attentive and cares for her patients.

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August 30, 2025

5.0

Dr. Kosirog is thoughtful, attentive, and kind. She always answers my questions thoroughly. I would recommend her to anyone!

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Disclosures

Megan C. Kosirog, 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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