Jason H. Ko, MD

Jason H. Ko, MD

4.8 
1021 ratings  Read Reviews
Northwestern Medicine logoNorthwestern Medical Group

Primary Specialty

Plastic Surgery

Secondary Specialty

Is your insurance accepted? Select plan

Practice Website

HealthBeat

nm-from-pageants-to-patient_preview

Miss Illinois USA 2018: Melanoma Survivor

As a teenager, Karolina Jasko turned to Northwestern Medicine when she developed a deadly skin cancer in her nailbed.

More HealthBeat Articles

Practice Focus Areas

This medical professional has a particular interest or expertise in:

Reasons to Schedule a Visit

This medical professional may be a good choice for you if you are looking for care for any of the following:

  • Bicep or tricep rupture
  • Elbow pain
  • Hand cut, laceration (deep cut), tendon laceration, puncture wound, amputation

Education

Medical Education:
MD, Duke University School of Medicine - 2004
Internship:
McGaw Medical Center of Northwestern University - 2005
Residency:
McGaw Medical Center of Northwestern University - 2011
Fellowships:
University of Washington - 2012

Board Certifications

  • American Board of Plastic Surgery - Plastic Surgery (Certified)
  • American Board of Plastic Surgery/Surgery of the Hand - Surgery of the Hand (Certified)

Faculty Profile

Professor, Feinberg School of Medicine

View Faculty Profile

Practice Groups and Affiliations

Medical Group:
Northwestern Medical Group
On Medical Staff At:
Catherine Gratz Griffin Lake Forest Hospital
Grayslake Ambulatory Surgery Center
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.

Read Ratings FAQs

Overall Rating

4.8
4.8 

1021 Ratings

Sort By Newest

Reviews from Patients

98 Reviews

Reviews from Patients

Sort By Newest
98 Reviews

February 27, 2026

5.0

He's compassionate, and professional.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 27, 2026

5.0

Very thorough

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 13, 2026

5.0

Jason was very positive and extremely knowledgeable of my condition and procedure. He answered all my questions and concerns and had a great bedside manner. I would absolutely have him perform any future hand surgeries I might need.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 11, 2026

5.0

I just met Dr. Ko for the first time at this appointment. He was very nice, thorough and honest. He seemed very well versed on the subject of a possible surgery for my hand, too.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 09, 2026

5.0

As from the reasons I stated in the previous question. I just wish he had another office nearby the suburbs also.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 03, 2026

5.0

Dr sat down and explained everything in Dr and not Dr terms so we knew what was going on. Answered all my questions and very professional and great bed side manners . Thank you for a great visit

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 02, 2026

5.0

Great dr

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 02, 2026

5.0

Dr. Ko is very good with explaining and making you feel comfortable and educated on the procedure.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 30, 2026

5.0

Compassionate, professional and honest in providing care and answers

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 26, 2026

5.0

Excellent doctor, super professional

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 23, 2026

5.0

Excellent physician

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 23, 2026

5.0

Knowledge and experience

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 12, 2026

5.0

Overall care with Dr Ko and staff has been exemplary.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 10, 2026

5.0

Dr. Ko is very knowledgeable, has a easy bedside manner, and he complemented my "Fit".

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 03, 2026

5.0

Same but I put Doctor Ko a bit higher in approval, he has great bedside manner and great hands as well.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 27, 2025

5.0

Dr. Ko is a wonderful surgeon! I felt that I was in the best care possible and very confident that he knows what he is doing. He is also a kind doctor and took the time to explain everything to me.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 26, 2025

5.0

Dr Ko's expertise and knowledge is second to none. Northwestern is lucky to have surgeons of Dr Ko's s caliber. He is an excellent surgeon who takes time to answer all my questions and makes sure I understand all my options. His bedside manner makes me very comfortable in my decision and truly makes me feel part of my care team.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 23, 2025

5.0

Ko has deep knowledge as evidenced by his ability to assess exam results and imaging.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 23, 2025

5.0

Courteous and professional, would highly recommend

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 19, 2025

5.0

Excellent care. Nice facility.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 12, 2025

5.0

Dr. Ko explains everything thoroughly and gives you options. Extremely patient and wants to make sure you are comfortable with your surgical choice

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 12, 2025

5.0

Very professional and great bedside manners

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 05, 2025

5.0

He is friendly, took the time to answer my questions and had a good bedside manner. I felt confident that I was in good hands.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 01, 2025

5.0

He is the only dr who was able to diagnose the numbness in my feet.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 01, 2025

5.0

Dr. Ko was very knowledgeable, professional, and helpful.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 28, 2025

5.0

Excellent procedure and professional care for my minor hand surgery. I'd return to the practice for future needs. Dr Ko is fantastic to work with.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 26, 2025

5.0

He's a good listener. Very personable. Plus he saved my hand for which I will be forever in debt. Dr. Ko is a rock star.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 25, 2025

5.0

Dr. Ko is very knowledgeable, attentive and personable. He showed great clinical skills.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 25, 2025

5.0

Pleasing personality! Explained the plan of care in simple and understandable manner.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 24, 2025

5.0

He's nationally and internationally reknown and I recommend from my surgical experience with Dr Jason Ko.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 23, 2025

5.0

Dr Ko gives you time and the information you need to make a decision for your care.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 21, 2025

5.0

Dr Ko is always attentive, kind and professional. He listens to the patient and seems humble.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 11, 2025

5.0

Always takes the time to explain and listen.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 10, 2025

5.0

Knowledgeable, professional, and good listener. I felt very safe in Dr Ko's care, I'm considering leaving my current employers healthcare plan to continue to receive care at Northwestern.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 10, 2025

5.0

Dr. Ko was a people-person and made me feel confident in his ability to correct my condition.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 10, 2025

5.0

He's great.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 28, 2025

5.0

Dr. Ko's approach to treatment and care is low keyed but extremely proficient, giving patients a sense of assurance.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 27, 2025

5.0

Wonderful physician! Very knowledgeable and skilled

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 24, 2025

5.0

I had a traumatic accident and almost lost my leg. I was blessed that Dr Ko agreed to take on my care. After several years I still have the use of my leg that other physicians were ready to amputate. Dr Ko's expertise and knowledge along with other Northwestern providers allowed me the chance to live my life with both my legs intact. I am forever grateful Dr Ko took a chance on me.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 24, 2025

5.0

Very knowledgeable

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 24, 2025

5.0

Excellent doctor! Very professional, caring, and knowledgeable.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 15, 2025

5.0

Dr. Ko, has conducted a thorough examination based on my health history. He listened attentively to my report and answered any questions I had. He explained the steps he would like to take in the treatment plan he sees best for my condition.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 06, 2025

5.0

Dr Ko's expertise is why I chose him as my surgeon. Complete trust in his skill for what he performed during this surgery.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 03, 2025

5.0

Dr Ko is thorough willing to listen and explain things.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 26, 2025

5.0

Great Dr.and staff.Extremely pleasant and qualified

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 26, 2025

5.0

Dr Ko was thorough, patient, and recommended a procedure to keep me safe, correct my hand issue and post operative care. So appreciated!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 23, 2025

5.0

It was clear from observing patients in the waiting room, that everyone was there to receive expert care from Dr Ko. I'm less than half way through my post op recovery journey and feel Dr. Ko reinforced and encouraged me to continue rehab and getting muscle tone back. He took his time and answered all my questions. I may see continued improvement and less pain before my next check up; that's the goal. Can't wait to see final result in my nerve decompression.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 22, 2025

5.0

Dr. Ko and his team are great! Very professional and always willing to address questions as they arise. I appreciate all they've done for me and my treatment.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 12, 2025

5.0

He is extremely knowledgeable and professional!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 09, 2025

5.0

Very attentive, helpful, and informative. Always answers all your questions and makes you feel like you're being well taken care of

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 05, 2025

5.0

Super thorough, good bedside manner, and outstanding expert in his field

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 29, 2025

5.0

Dr Ko was able to explain my medical situation in a way that was both relatable and understandable. I felt very much at ease to ask him questions and he seemed interested in helping me understand what I needed to do and why.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 25, 2025

5.0

The surgeon (Dr Ko) and staff are informative, kind, knowledgeable and skilled. It's been a great experience and would recommend. Really appreciated how quickly my concerns or questions were replied to.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 23, 2025

5.0

he's the best

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 20, 2025

5.0

The doctor was very personable and knowledgeable. He offered a care plan that didn't seem scary.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 13, 2025

5.0

I believe he would be very good. I'm having a surgeon at 21st. I'll let you know then what I think.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 06, 2025

5.0

He has excellent credentials, reputation, & a great bedside manner. He is very skilled in the very difficult procedures that he offers his patients.,

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 02, 2025

5.0

Wonderful Doctor and care team!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 01, 2025

5.0

Dr. Jason is very patient and explains things in great detail and understandably. I recommend him 100%.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 01, 2025

5.0

Very attentive. Understanding. And presented all options to me.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 01, 2025

5.0

Calming, professional, knowledgeable and understanding. Surgery went well and I am grateful for Dr. Ko and his expertise.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 28, 2025

5.0

Very patient in explaining my situation & making decisions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 28, 2025

5.0

The doctor is very good in his field of expertise.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 25, 2025

5.0

Dr. Ko is an exceptional physician in every sense of the word. He was patient in explaining my case and varying outcomes, understood and addressed my concerns and the follow up with him and his staff was incredible.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 21, 2025

5.0

Expertise and great bedside manner. Very caring!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 21, 2025

5.0

Referred to Dr. Ko for his expertise in nerve repair. After reading patient reviews and my own experience felt very comfortable with surgical treatment plan.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 19, 2025

5.0

Dr Ko takes the time to listen and explains everything, and encourages asking questions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 14, 2025

5.0

Perfect arm surgery and a great and friendly staff

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 14, 2025

5.0

Jason is awesome. he really knows his craft and can explain things so the average person can understand.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 13, 2025

5.0

Dr. Ko and his team were totally professional in there approach to my health concerns. He took the time to assess and determine appropriate next steps to a condition four different doctors could not deduce.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 07, 2025

5.0

He is a caring doctor he make sure u are good and he explains everything before you walk out of his office

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 07, 2025

5.0

The doctor did a 14 hour surgery on our son. We are forever grateful that he was willing to take his case. Very hopeful that it will be a success over time. We can not thank him and his team enough for every possible chance they gave him to recover.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 04, 2025

5.0

Very skilled surgeon and very pleasant

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 30, 2025

5.0

He's very intelligent & kind. Best doctor I've ever had. His whole team is wonderful.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 29, 2025

5.0

He is a real good surgeon and he did surgery on my left hand and it came out Amazing. Thanks Dr. Jason Ko Continue your good work.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 28, 2025

5.0

Very good doctor

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 28, 2025

5.0

Great bedside manner and the surgery was a success what he said he was going to do worked his office is great

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 23, 2025

5.0

Dr. Ko explained the previous test report along with path forward.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 10, 2025

5.0

Great provider and wonderful bedside manner. I appreciate his patience in explaining the medical treatment and surgical intervention to me at my office appointment.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 10, 2025

5.0

Very knowledgeable and compassionate doctor. Took a long time performing exam and is ordering more tests to try to get to the bottom of what he thinks may be going on.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 03, 2025

5.0

He was very thorough in his evaluation and on telling me what the plan was.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 02, 2025

5.0

He is very precise, very kind, and treated everyone professionally but in a friendly manner

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 02, 2025

5.0

Good listener explains takes his time to explain very knowledgeable got a sense of humor

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

June 02, 2025

5.0

He is a very professional doctor, very kind and a very, very good doctor.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 30, 2025

5.0

Dr Ko has excellent credentials & comes highly recommended.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 24, 2025

5.0

Very thorough in his examination.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 24, 2025

5.0

His skills are amazing

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 23, 2025

5.0

Dr Ko explains test results, procedures and a sensible medical plan. He has an approachable manner a good bedside manner.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 19, 2025

5.0

Dr. Jason Ko is professional and caring and is a skilled surgeon.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 19, 2025

5.0

Knows his business

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 16, 2025

5.0

Jason is kind, understanding and best of all he listens. Plus, he's a fabulous surgeon.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 13, 2025

5.0

His quallity is very high.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 12, 2025

5.0

The doctor explain everything in the details

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 06, 2025

5.0

Knowledgeable, very skilled

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 06, 2025

5.0

He's an excellent orthopedic doctor.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 02, 2025

5.0

He is willing to give you all the time needed and answer all questions presented to him. Does not rush into things.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 02, 2025

5.0

See above. Good bedside manner and he put you at ease to express your concerns or ask questions. He also put a STAT on an order to get it done.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 01, 2025

5.0

Very thorough and took his time getting to know me and the issues I am having.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!
View more reviews

Disclosures

Industry Relationships

Ownership or Investment Interest

Faculty member and/or their immediate family have an ownership or investment interest in the following companies

  • Edge Surgical
  • Mesh Suture Company

Consulting

Faculty member and/or their immediate family have engaged in activities such as speaking, advising, consulting, or providing educational programs for the following companies or other entities

  • Checkpoint Surgical, Inc
  • Integra LifeSciences Corporation
  • Neuraptive Therapeutics, Inc.

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.

View More Disclosures

HealthBeat

nm-from-pageants-to-patient_preview

Miss Illinois USA 2018: Melanoma Survivor

As a teenager, Karolina Jasko turned to Northwestern Medicine when she developed a deadly skin cancer in her nailbed.

More HealthBeat Articles